Dissertations / Theses on the topic 'Intensive Care'

The objectives of this thesis are : 1) To provide a review of the literature on the significance, pathogenesis, diagnosis and management of secondary infections in the Intensive Care Unit. 2) To present the findings of a study of the technique of selective parenteral and enteral antisepsis regimen (SPEAR) in the patient population of the Respiratory ICU at Groote Schuur Hospital, aimed at reducing the incidence of secondary infection and, further to evaluate the study in terms of the effect of SPEAR on the incidence of secondary infection and its influence on the mortality due to secondary infection. 3) To present the findings of the effect of SPEAR on patient bacterial colonisation in the ICU, and to evaluate its longterm influence on the microbial flora of the ICU.

This study consisted of two stages. Stage 1 investigated the reproducibility and practicality of two observational sedation assessment scales for use in critically ill children. The two scales were different in design, the first being simple in design requiring a single assessment of the patient. The second was more complex in design requiring assessment of five patient parameters to obtain an overall sedation score. It was established that nursing staff preferred the second, more complex sedation scale mainly because it was perceived to give a more accurate assessment of level of sedation and anxiety rather than merely level of sedation. Stage 2 investigated the pharmacokinetics and pharmacodynamics of midazolam in critically ill children. 52 children, aged between 0 and 18 years were recruited to the study and 303 blood samples taken to analyse midazolam and its metabolites, 1-hydroxymidazolam (1-OH) and 4-hydroxymidazolam (4-OH). A significant correlation was found between midazolam plasma concentration and sedative effect (r=0.598, p=0.01). It was found that a midazolam plasma concentration of 223ng/ml (±31.9) achieved a satisfactory level of sedation. Only a poor correlation was found between dose of midazolam and plasma concentration of midazolam. Similarly only a poor correlation was found between sedative effect and dose of midazolam. Clearance of midazolam was found to be 6.3ml/kg/min (±0.36), which is lower than that reported in healthy children (9.11-13.3ml/kg/min). neonates produced the lowest clearance values (1.63ml/kg/min), compared to children aged 1 to 12 months (8.52ml/kg/min) who achieved the highest clearance values. Clearance was found to decrease after the age of 12 months to values of 5.34ml/kg/min in children aged 7 yeas and above. Patients with renal (n=5) and liver impairment (n=4) were found to have reduced midazolam clearance (1.37 and 0.74ml/kg/min respectively). Disease state was found to affect production of 1-OH. Patients with renal impairment (n=5) produced the lowest 1-OH midazolam plasma ratio (0.059) compared to patients with head injury (0.858).

Background: Neonates who require specialized care and life-saving therapies in neonatal intensive care units (NICUs) and neonatal special care units (NSCUs) can be exposed to separation from their parents and families. Consequently, establishing a parental-neonate bond can be difficult. However, addressing this problem of separation through involving parents and families in neonatal care to improve parent-professional collaboration can result in positive outcomes for neonates and their families. Family-centred care (FCC) has developed over decades and is broadly recommended as an ideal model of care in daily clinical practice in NICUs. However, FCC implementation is challenging at individual, organizational, cultural, and healthcare system levels. In particular, developing countries are challenged by the lack of material resources, infrastructure, and staff shortages. In Thailand, the practical incorporation of FCC into daily clinical practice in neonatal care units is difficult, and it has not been sustainably achieved. Furthermore, there has been minimal research reporting on the development, implementation, and evaluation of FCC in the neonatal critical care context within Thailand. Aim and Objectives: The aim of this PhD study has been to develop, implement and evaluate innovation to facilitate FCC by improving respect, collaboration, and support in a Thai NICU. It had three objectives, each representing a distinct phase in the study: (1) to identify perceptions, current practices and FCC strategies; (2) to develop and implement an innovation to facilitate FCC by improving respect, collaboration, and support in a Thai NICU; and (3) to evaluate the FCC innovation developed in Phase 2. Methods and Results Design: The multistage, mixed-methods study design applied the Participatory Intervention Model (PIM) to guide the innovation’s development, implementation, and evaluation to facilitate FCC by improving respect, collaboration, and support in a Thai NICU. Setting and context: This study was conducted in a tertiary care hospital in southern Thailand (February 2020-January 2021). Ethics approval was obtained from the Research Ethics Committee of Hatyai Hospital and Griffith University. Phase 1: Identification of perceptions, current practices, and FCC strategies Phase 1 was planned to include data collection over 3 months. Due to the COVID-19 pandemic, it was reduced to 2 months during the very early stages of the pandemic (February to March 2020). This phase consisted of two parts, including surveys and interviews with parents and the interdisciplinary professionals. Participants: Participants consisted of two groups: parents of neonates (all gestational ages with no life-threatening or life-limiting diagnosis) who had an expected NICU stay of at least 72 hours and visited the study NICU at least once, and interdisciplinary professionals with a permanent position for at least 1 year in the study unit. Part A: Survey of parents and interdisciplinary professionals Surveys of parents and interdisciplinary professionals were conducted using the validated Perceptions of Family Centred Care – Parent (PFCC-P) and Perceptions of Family Centred Care – Staff (PFCC-S) instruments which were translated into Thai. Sample size: Sample size was based on availability of parents and interdisciplinary professionals over the planned 3-month Phase 1 period. Recruiting parent participants in Phase 1 was prior/during the very early stages of the COVID-19 pandemic and needed to be stopped prior to pre-determined sample size of 100 parents due to visitor restriction (n = 85). Eighty-five parents and 20 interdisciplinary professionals completed the surveys. Data analysis: Demographic characteristics of parents, interdisciplinary professionals, and neonates are reported using descriptive statistics. The subscale scores for parents and interdisciplinary professionals were not normally distributed, so medians were calculated for each of the three sub-scales (respect, collaboration, and support). Parents’ and interdisciplinary professionals’ perceptions of FCC (PFCC-P & PFCC-S) were compared using the Mann-Whitney U test to examine differences in medians in the preimplementation phase because they were unpaired groups. Part B: Semi-structured interviews with parents and interdisciplinary professionals Face-to-face, semi-structured, individual interviews were planned to gain information from extended family members and parents and interdisciplinary professionals; however, given the visitation restrictions, only parents and interdisciplinary professionals were recruited to participate (during the first half of February 2020). Sample size: The sample size was determined when data saturation was identified. Eight interdisciplinary professionals and nine parents participated in face-to-face interviews. Data analysis: Thematic analysis was used to analyse the transcribed Thai language interviews. Results: The survey results across the median of three subscales demonstrated that parents and interdisciplinary professionals’ perceptions on the FCC strategies in current practice were 2-3/4 (Interquartile range [IQR] 1.7-3.8) and 3-4/4 (2.85-3.55), respectively. Considering the median subscale scores, the interdisciplinary professionals had significantly higher subscale scores for respect (median 3.00 (95% CI, 2.91-3.24) vs 2.50 (2.37-2.81)), collaboration (median 3.22 (3.10-3.37) vs 2.33 (1.9-2.62)), and support (median 3.20 (3.03-3.39) vs 2.60 (2.03-2.61)) (all p ≤ 0.001). The interview findings highlighted that the interdisciplinary professionals in this study accepted that the three critical elements of FCC (respect, collaboration, and support) were necessary to be implemented into clinical practice. However, they believed that in reality it was not easy in the Thai NICUs context. This finding identified that the challenge to promote parent-healthcare professional partnerships was associated with the structure and processes of the healthcare delivery system. In addition, the individuality of families' readiness and healthcare providers' perceptions of parents’ involvement as obstacles to providing care were found to be challenges to current practices of FCC. Phase 2: Development and implementation of innovation to facilitate FCC This phase was achieved by two different methods: strategy development working group and implementation of the FCC innovation. Strategy development working group: The development of FCC innovations by the strategy development working group (June to August 2020) was based on Phase 1 findings and the reported integrative literature review. In addition, the FCC innovations were considered within the policies and practices of the NICU in the context of COVID- 19 in Thailand. The development working group members were key and high-level stakeholders in the NICU. Educational activities for the healthcare professional team to incorporate the FCC innovations into their clinical practice in NICU were provided. Implementation of the FCC innovation: The FCC innovations were then implemented over 2 months (September to October 2020), during a period of restrictions on parents and staff arising from COVID-19. Results: The working group identified the gaps in the three key elements (respect, collaboration, and support) to providing FCC in a Thai NICU through the analysis of Phase 1’s results in consort with the findings from the integrative review. A preliminary protocol for the FCC innovations and implementation plan were developed consistent with the challenges associated with COVID-19 in Thailand. FCC practice innovations associated with improving communication were established, including changes and updates to the material within the parent booklet with specific material related to COVID- 19, neonatal updates at bedside or conducted via telephone calls, interdisciplinary family meeting for complex care situations, structured communication checklists, and documentation templates. In addition, although visiting restrictions were limiting, parents were provided with more flexibility as to when they could visit based on individual circumstances. The majority of the healthcare providers in this setting (80%) attended the educational activities to incorporate the FCC innovations into their clinical practice in the NICU. The FCC innovations were incorporated into daily NICU practice by nurses in cooperation with other healthcare providers and ancillary support staff during the pandemic. Phase 3: Evaluation of the FCC innovation Phase 3 (post-implementation) was conducted over 3 months (November 2020-January 2021), and it focused on evaluating the FCC innovations. This phase repeated the collection of data from the validated PFCC-P and PFCC-S surveys of parents and interdisciplinary professionals' perceptions, as per Phase 1, to assess respect, collaboration, and support changes after implementing the FCC innovations in the Thai NICU during the pandemic. Sample size: One hundred parents and 20 interdisciplinary professionals completed the surveys. Data analysis: As per Phase 1 for demographic characteristics. The Mann-Whitney U test was used to analyse parents' perceptions of the items of the PFCC-P pre- and postimplementation given they were two independent groups. Wilcoxon signed-rank test was used to compare the perceptions of the interdisciplinary professionals pre- and postimplementation using the PFCC-S given they were matched samples. Results: The participants consisted of 83 pairs of parents (i.e., mother and/or father of neonate participated) (35 pre; 48 post), which represented 102 neonates (50 pre; 52 post). There were 185 parents; 85 pre-implementation and 100 post-implementation. For the NICU health care team, 20 participated. The median scores of parents' perceptions post-implementation significantly improved for respect (2.50 to 3.50; 95%CI, 3.02-3.53), collaboration (2.33 to 3.33; 2.90- 3.40), support (2.60 to 3.60; 2.84-3.62), and the overall score (2.50 to 3.43) (p < 0.001, 95%CI 2.93-3.51). There was an absolute difference of at least 0.3 in the pre- and postimplementation scores for three subscales and overall score, where 0.3 corresponds to 10% of the rating scale. Comparatively, interdisciplinary professionals' perception of FCC did not significantly change pre- and post-implementation for respect ([median] 3.00 to 2.92; 95%CI, 2.87-3.16), collaboration (3.22 to 3.33; 3.16-3.47), support (3.20 to 3.20; 2.96-3.28) and overall (3.15 to 3.20; 95%CI, 3.10-3.25). Conclusions:Results from this study indicate that incorporating FCC innovations in the NICU appeared to be successful, despite the challenges of COVID-19. The key finding was that the innovations incorporated in the NICU were primarily based on communication strategies, a simple means to support, collaborate with, and respect parents that required low investment within the complex situation arising from COVID-19. These innovations were essential to engage collaborative working between parents and healthcare providers to promote parents as partners in a neonatal critical care team. To successfully implement FCC innovations in different settings, further innovations associated with communication methods need to target the specifics of individuals involved, healthcare settings, and available resources.
Thesis (PhD Doctorate)
Doctor of Philosophy (PhD)
School of Nursing & Midwifery
Griffith Health
Full Text

Palliative health care is offered to any patient experiencing a life limiting or life changing illness. The palliative approach includes goals of care, expert symptom management, and advance care planning in order to reduce patient suffering. Complex care can be provided by palliative care specialists while primary palliative care can be given by educated staff nurses. However, according to the literature, intensive care unit (ICU) nurses have demonstrated a lack of knowledge in the provision of primary care as well as experiencing moral distress from that lack of knowledge. In this doctor of nursing practice staff education project, the problem of ICU nurses' lack of knowledge was addressed. Framed within Rosswurm and Larrabee's model for evidence-based practice, the purpose of this project was to develop an evidence-based staff education plan. The outcomes included a literature review matrix, an educational curriculum plan, and a pretest and posttest of questions based on the evidence in the curriculum plan. A physician and a master's prepared social worker, both certified in palliative care, and a hospital nurse educator served as content experts. They evaluated the curriculum plan using a dichotomous 6-item format and concluded that the items met the intent of the objectives. They also conducted content validation on each of the pretest/posttest items using a Likert-type scale ranging from 1 (not relevant) to 4 (very relevant). The content validation index was 0.82 indicating that test items were relevant to the educational curriculum objectives. Primary palliative care by educated ICU nurses can result in positive social change by facilitating empowerment of patients and their families in personal goal-directed care and reduction of suffering.

Computer and Information Science
M.S.
Many emerging and existing medical applications can benefit from having continuous access to the patients vitals. This paper presents the results of a set of experiments conducted in a medical setting to determine the feasibility of using wireless communication in both home care and hospital intensive care environments. The study is also done with the intention of developing a new wireless protocol for use in medical settings. This protocol will later be incorporated into different medical devices operating inside a patient room with a view that significant performance improvements should be observed.
Temple University--Theses

Kangaroo care (KC) is a cost-efficient method to increase infant-parent bonding and neonatal health outcomes worldwide. Despite evidence supporting KC in critically ill infants, nursing perceptions regarding patient safety and interrupted work flow continued to impede practice in the local high-tech neonatal intensive care unit (NICU). Their current policy failed to address the 2-person transfer method recommended for safe practice. In addition, both staff and parents lacked training and education regarding the benefits and feasibility of KC. This doctoral project aimed to decrease practice barriers and promote earlier and more frequent KC by developing and integrating an evidence-based clinical pathway within a multifaceted champion-based simulated educational training program for NICU staff and parents. Published outcomes and generated organizational data for program synthesis connected the gap in practice. Kolcaba's comfort theory served as the guiding framework to ensure a partnership in care. This quasi-experimental quantitative study used the generalized liner model for data analysis. Study findings indicated that KC occurred 2.4 more times after the intervention compared to before (p = 0.001). Descriptive data revealed that KC episodes for intubated patients nearly doubled after implementation (11.1% from 6.2%). Post-survey scores for nursing knowledge and comfort level also improved after the intervention. Although earlier KC practice was non-conclusive (p = 0.082), future trials should control groups for day of life since admission. Disseminating the KC pathway can have a positive social change on family-centered care by increasing NICU nurses' knowledge, comfort, and adoption of this evidence-based practice as an expected routine standard of care.

Nursing Care for Terminal Patients in Intensive Care Units by Pervell Dunbar Project Submitted in Partial Fulfillment of the Requirements for the Degree of Doctor of Nursing Practice Walden University August 2015 Although the goal of the ICU has always been to save lives, ICU now additionally provides end-of life (EOL) care. The objective of this project was to provide ICU nurses with a comprehensive awareness of physical, emotional, and spiritual EOL care issues of patients and their families in order to be better equipped to handle EOL care. The framework used was Jean Watson's Caring model (10 Caritas). A literature review revealed a poster previously used by a major health organization as a conversation starter to facilitate decision-making among ICU nurses, EOL patients, and their families related to EOL issues. The purpose of this quality improvement initiative was to introduce and implement an educational EOL tool that would engage patients and family members in meaningful and useful conversations with ICU nurses. Twenty seven ICU nurses were selected by the unit's director to attend a PowerPoint presentation on the use of the EOL educational poster. Four ICU nurses were chosen by the director to be champions for this project. After the presentation, there was a period for questions and answers, and the ICU nurses were requested to give feedback on the presentation. The result from the feedback revealed that EOL care is outside previous practice and may require extra education and support. These comments substantiated similar conclusions from other researchers as described in this paper. With an increase in EOL training for ICU nurses and the implementation of EOL teaching tools like the poster used in this study, ICU nurses may be better able to have conversations with EOL patients and families, thus improving patient care.

Ventilator-associated pneumonia (VAP), catheter-related blood stream infection (CRBSI) and pressure ulcers (PU) are well recognized complications in intensive care units (ICUs). Many of these are preventable but can also complicate patient recovery, prolong length of stay, increase costs, morbidity and mortality. In Malaysia, the majority of studies investigating VAP and CRBSI in Malaysia have focussed on identifying risk factors, diagnostic criteria and treatment of ICU-related complications. Further, in spite of the burden of PU there are limited studies undertaken in Malaysia and few of these have been nurse-led. Importantly, to date there has been limited investigation of the efficacy and effectiveness of quality improvement initiatives and the contextual issues impacting on clinical practice improvement in Malaysia.In spite of the increasing emphasis on quality assurance in Malaysian ICUs there has been a limited focus on nurse-specific interventions and the majority of projects have been initiated by physicians. This study has evaluated the utility of a nurse-led action research project to drive clinical practice improvement in the ICU and is significant in demonstrating the capacity of nurses to critique and control their practice. The project conducted for this thesis was called the Improving health outcomes by preveNting intensiVe care related infEction in Malaysia intenSive care uniT - INVEST study. The INVEST Study as reported in this thesis has been undertaken using an action research approach to improve the uptake of evidence-based strategies to prevent infection in the ICU in the Malaysian cultural context.The aims of this thesis were to identify best practices, evaluate the current nursing practice in prevention of VAP, CRBSI and PU in ICU patients in a single Malaysian ICU, and evaluate the impact of the evidence-based interventions to improve patient outcomes. The specific and research objectives of this study were to:1. Identify best practice interventions for preventing VAP, CRBSI and PU in the ICU. 2. Document the current rates of VAP, CRBSI and PU in an ICU in Malaysia. 3. Implement an action research intervention to collaboratively develop and implement strategies for improvement 4. Assess the impact of the intervention on clinical outcomes, staff dynamics, work place culture and sustainability of practice change An action research approach was used in this study to involve and empower nurses and drive practice change. A literature review identified that many action research studies conducted in the ICU were mainly most focused on process measures and not outcomes. In this study the data were collected in three phases following the action research cycles which comprised of a period of planning, acting, observation, reflecting and re-planningIn Phase I of the thesis current best practice interventions for the prevention of VAP, CRBSI and PU in ICU are described. A literature search was conducted to identify evidence-based practices (EBP) that were recommended by bodies to improve the prevention of VAP, CRBSI and PU. A core set of nursing activities was identified in preventing the complications of VAP, CRBSI and PU. These were hand washing, hygiene care, positioning of patient, elevation of the head of bed and providing adequate nutrition.Pre- intervention data collection consisted of an environmental scan, including interview with the key stakeholders, patient profiling and a nurse survey. Twenty-one cases of ICU complications were identified in 18 of the 91 patients (19.8%) admitted in December 2009. Of the patients, three developed two complications - PU and VAP (two patients) or CRBSI (one patient). The findings indicated that this ICU had a high case load due to the high ICU bed demand. Patients needing ICU care were being nursed in general wards due to the unavailability of ICU beds.Nurses reported a good knowledge of prevention strategies with a mean score of 124.84 ±SD14.66 and reported a high level of positive regard for their professional practice environment based on the results of Revised Professional Practice Environment (RPPE). Three components had mean scores of ≥3 and five <3 within the eight components. Three components of RPPE subscales with highest mean scores were Internal Work Motivation (M 3.24; SD 0.3), Relationship With Physician (M 3.22; SD 0.53) and Cultural Sensitivity (M 3.04; SD 0.24). The two lowest mean scores were for Handling Disagreement and Teamwork with 2.77 (SD 0.16) and 2.45 (SD 0.47), respectively. Nurses also showed positive attitudes toward the sustainability of the change process. The Sustainability Indices ranged from 13.4 to 100 with a mean of 75.21 (SD 21.71).In Phase 2 the intervention was conducted over six months from February to July 2010. The Center of Disease Control and Prevention (CDC) criteria for diagnosis of VAP and CRBSI, and the Waterlow Pressure Ulcer Risk Assessment Scale were promoted in the unit. Nurses were exposed and encouraged to implement evidence-based nursing interventions as identified in care criteria. All nurses were invited to the unit nursing education to increase their knowledge and awareness about evidence-based practice in prevention of the ICU complications. Nurses were encouraged to gain control of their practice. Evidence-based practice articles were also provided to increase their knowledge level and posters were distributed and placed in the unit to increase nurses awareness of the quality improvement initiativesFocus group discussions were conducted in Phase 2 and found that nurses in the unit were unaware of the importance of standardized assessment in their daily practice. They had a lack of understanding regarding the importance of standardised risk assessments. Despite the reluctance of many nurses to embrace the EBP, due to a perception of their workload, the focus groups also revealed nurses were optimistic that change will get easier and could be eventually achieved. Participants were positive about the change that could take place in the future. The hierarchical relationships with medical doctors were also identified as a factor limiting nurses from adopting the guidelines.Phase 3 of the project, the post-intervention phase was conducted from March to May 2011. The data collection process was repeated as Phase 1 and Phase 2. There were 11 cases of ICU complications identified during the post-intervention phase in 10 (8.7%) of the 115 patients admitted during March 2011. One patient developed both VAP and PU, while four developed VAP and another five PU. In the post-intervention group, no cases of CRBSI were detected. The total mean score of nurses’ knowledge was 121.45±SD16.85. An independent-samples t-test was conducted to compare nurses’ knowledge pre and post intervention, and found no significant differences, t (150) =1.32, P 0.189. The Sustainability Indices ranged from 41.3 to 100 percent with a mean of 76.81±SD21.45.Approximately 84% of the nurses in pre-intervention and 70% in post-intervention scored >55%. The nurses reported a positive regard for their practice environment in the pre- and post-intervention groups. The mean scores for each component were comparable for both the pre- and post-intervention groups except for Internal Work Motivation, Control Over Practice and Staff Relationship With Physician. The highest mean scores within the eight components for the post-intervention group were for Internal Work Motivation (M 3.13; SD 0.27), Relationship With Physician (M 3.04; SD 0.33) and Cultural Sensitivity (M 3.01; SD 0.23). The three lowest were for Handling Disagreement and Conflict (2.80; SD 0.20), Control Over Practice (2.71; SD 0.34) and Teamwork (2.48; SD 0.31).There was a reduction in overall complications from 19.8% to 8.7%. Few nurses in the focus group were optimistic that at least some changes had taken place, and positively improving their knowledge on assessment of patients and some of their common practices in the ICU. The challenge, which they were presently facing was the implementation of hospital information system because most of them were not knowledgeable in information technology.The main outcome of this study was that there was a reduction in number of patients with PU from 16 to 6 in pre and post intervention groups. This reduction of PU was statistically significant (χ[superscript]2=8.14, df=1, p=0.04).In conclusion whether there was a real improvement in patient care provided due to the interventions given was not able to be determined due to methodological considerations and inability to control for confounders. These data underscore the importance of considering cultural factors, both organisational and societal in quality improvement initiatives and empowering nurses for practice change. A risk management system which acknowledges competing demands in dynamic, real world environments is important to consider in future quality improvement studies. The series of studies presented in this thesis have contributed to understanding of factors influencing implementation and sustainability of quality improvement initiatives in a Malaysia ICU. Information acquired from the thesis will be useful information for further improvement targeting education, services, research, policy and future quality improvement project plans in Malaysia.

Jordan is a developing country which is taking measures to make the situation in the society more equal between males and females. Former research has showed that it, worldwide, sometimes is great differences between the genders in the health care. This thesis illuminates how it is to work in an intensive care unit and if there are differences between male and female intensive care nurses influencing on the provided care. Twenty intensive care nurses from four intensive care units at Jordan University Hospital were included in the study. Both field notes and an observation schedule were used to gather data. The field notes captured the overall experience of working in the intensive care area and were analyzed by thematic content analyze. The observation schedule concentrated on how long time was spent and which activities were performed bedside. Data from the schedule was compared between the units and between male and female intensive care nurses caring for male and female intensive care patients. The field notes showed that even if the units were busy and crowed the silence and calmness were present. Cooperation was essential and trust and knowledge were spread. Often a warm and comfortable feeling surrounded the personnel and they seemed to like it at work. The observation schedule showed that in the medical and surgical intensive care units the intensive care nurses spent more time and performed a greater number of bedside activities compared to the pediatric and main intensive care units. Female intensive care nurses who cared for male intensive care patients performed less bedside activities and when they cared for a female intensive care patient they spent less time bedside compared to the other groups. In all the units and all the groups the most frequent performed activity was to have a look at the equipment, followed by have a look at the patient. The results can however be questioned since it is a small study accomplished by a single researcher, in some few intensive care units at one hospital.
Program: Specialistsjuksköterskeutbildning med inriktning mot intensivvård

This thesis reviews the requirements for intensive care audit data and describes the development of ICARUS (Intensive Care Audit and Resource Utilisation System), a system to collect and analyse intensive care audit information. By the end of 1998 ICARUS contained information on over 45,000 intensive care admissions. A study was performed to determine the accuracy of the data collection and entry in ICARUS. The data in ICARUS was used to investigate some limitations of the APACHE II severity scoring system. The studies examined the effect of changes in physiological values and post-intensive care deaths, and the effect of casemix adjustment on mortality predicted by APACHE II. A hypothesis is presented that excess intensive care mortality in the United Kingdom may be concealed by intensive care mortality prediction models. A critical analysis of ICARUS data was undertaken to identify patient groups most likely to benefit from intensive care. This analysis revealed a high mortality in critically ill patients admitted from the wards to the intensive care unit. To help identify critically ill ward patients, the physiological values and procedures in the 24 hours before intensive care admission from the ward were recorded: examination of the results suggested that management of these patients could be improved. This led to the setting up of a patient at risk team (PART). Two studies report the effect of the PART on patients on the wards and on the patients admitted from the wards to the intensive care unit. Additional care for surgical patients on the wards is suggested as a way of improving the management of high-risk postoperative patients. The thesis concludes by discussing the benefits of the ICARUS system and speculating on the direction that should be taken for intensive care audit in the future.

Abstract Systematic analyses of infections in critical illness are sparse and mostly restricted to specific infection categories. Thus, a prospective study was carried out in a medical-surgical ICU during 14 months on patients whose ICU stay was longer than 48 h. The prospectively gathered data included detailed patient history, infection survey, severity of illness scores (APACHE II, SOFA), resource use, short-term and long-term outcome and quality of life following hospital discharge. Altogether 335 patients were included, of whom 251 (74.9%) had an infection on admission; 59.3% had a community-acquired infection (CAI) and 40.7% a hospital-acquired infection (HAI), while 84 (25.1%) did not have any infection (NI). APACHE II scores and ICU or hospital mortality rates did not differ between the groups. The median hospital stay was longer in the HAI than in the CAI or NI groups. Eighty (23.9%) of the 335 patients developed an ICU-acquired infection (48 per 1000 patient days): ventilator-associated pneumonia (VAP) in 33.8% of the cases, central catheter-related (CRI) or primary bloodstream infections in 6.3% and urinary tract infections in 1.3%, while the corresponding device-related incidences per 1000 days were 18.8, 2.2 and 0.5, respectively. ICU-acquired infection was an independent risk factor for hospital mortality. It doubled the risk for hospital mortality in patients with an infection on admission and caused a threefold the risk in patients without an infection on admission and an almost fourfold increase in the use of nursing resources. Of the 272 hospital survivors, 83 (30.5%) died after discharge during the median follow-up of 17 weeks. Infection status on admission or during the ICU stay did not affect long-term mortality. ICU-acquired infection did not have an impact on patients' quality of life. The current general level of health compared to the status before ICU admission did not differ between the groups, either. Only 36% of those employed resumed their previous jobs. Three-fourths of patients had an infection on admission, while nearly one fourth acquired an ICU infection. The high VAP rate suggests a need for re-evaluation of preventive measures, whereas the low CRI indicates more successful prevention. ICU-acquired infection was a significant risk factor for hospital mortality, but did not affect patients' long-term survival or quality of life.

The vital signs monitoring data of an infant receiving intensive care are a rich source of information about its health condition. One major concern about the state of health of such patients is the onset of neonatal sepsis, a life-threatening bloodstream infection. As early signs are subtle and current diagnosis procedures involve slow laboratory testing, sepsis detection based on the monitored physiological dynamics is a clinically significant task. This challenging problem can be thoroughly modelled as real-time inference within a machine learning framework. In this thesis, we develop probabilistic dynamical models centred around the goal of providing useful predictions about the onset of neonatal sepsis. This research is characterised by the careful incorporation of domain knowledge for the purpose of extracting the infant’s true physiology from the monitoring data. We make two main contributions. The first one is the formulation of sepsis detection as learning and inference in an Auto-Regressive Hidden Markov Model (AR-HMM). The model investigates the extent to which physiological events observed in the patient’s monitoring traces could be used for the early detection of neonatal sepsis. In addition, the proposed approach involves exact marginalisation over missing data at inference time. When applying the ARHMM on a real-world dataset, we found that it can produce effective predictions about the onset of sepsis. Second, both sepsis and clinical event detection are formulated as learning and inference in a Hierarchical Switching Linear Dynamical System (HSLDS). The HSLDS models dynamical systems where complex interactions between modes of operation can be represented as a twolevel hidden discrete hierarchical structure. For neonatal condition monitoring, the lower layer models clinical events and is controlled by upper layer variables with semantics sepsis/nonsepsis. The model parameterisation and estimation procedures are adapted to the specifics of physiological monitoring data. We demonstrate that the performance of the HSLDS for the detection of sepsis is not statistically different from the AR-HMM, despite the fact that the latter model is given “ground truth” annotations of the patient’s physiology.

Purpose: The purpose of this project was to conduct an educational workshop among ICU nurses working in rural areas, to reduce risk of compassion fatigue. Background: Compassion fatigue is a job-related hazard unique to professionals in caring professions such as nursing. Rural ICU nurses represent a population that may encounter unique triggers for the risk of compassion fatigue due to professional isolation, less resources and more risk of knowing the patient as a community member. A review of literature reveals limited research related to compassion fatigue development in rural ICU nurses. Method: Two educational workshops were conducted among rural ICU nurses (N=3). Workshop content included discussion about symptoms, triggers, and outcomes of compassion fatigue, as well as positive coping strategies. Participants journaled physical and emotional responses to situations such as ethical or moral dilemmas, boundary issues, and aspects of self-care. Each workshop included time to discuss the educational content and participant experiences; the resulting narratives were analyzed for commonalities. Findings: Universally, burnout was viewed as inherent to the profession. All participants recounted past traumatic patient encounters that preoccupies their thinking when in similar situations. Symptoms identified as compassion fatigue included chronic, constant, generalized pain, symptoms of depression, isolation, withdrawal and lack of interest in enjoyable activities. Triggers were prolonged patient hospitalizations due to lack of resources, lack of supporting services, lack of leadership support, unexpected patient loss, witnessing patient trauma and grief, caring for patients who did not seem to really need ICU, social situations surrounding patients 10 and floating to different departments. Increased alcohol intake, sarcasm, and venting were the most reported mitigation strategies among participants. Implications: Compassion fatigue negatively impacts the lives of rural ICU nurses on many dimensions, although it is perceived as inherent to the profession. These participants desired support from nursing leadership and a supportive work environment. Participants expressed they continued to feel compassion, despite experiencing the phenomenon described as compassion fatigue. A less stigmatizing term might better capture the phenomenon now labeled as compassion fatigue.

The rapid growth of medical sciences and technologies created the need to manage data generated by sophisticated medical equipment (e.g. lab results, vital signs, etc.). This class of equipment, especially in the modern Intensive Care Unit (ICU), emits large quantities of latient data which medical staff usually records on log sheets.
This thesis presents a database design that allows abstract definition of data types, and offers a unified view of data during the development phase, distinct levels of data management and a higher degree of system flexibility. This database model is an implementation of a database for a Patient Data Management System (PDMS) developed for use in the ICU of the Montreal Children's Hospital. The PDMS has a variety of application modules that handle and process various types of data according to functionality requirements.

The observed physiological dynamics of an infant receiving intensive care contain a great deal of information about factors which cannot be examined directly, including the state of health of the infant and the operation of the monitoring equipment. This type of data tends to contain both common, recognisable patterns (e.g. as caused by certain clinical operations or artifacts) and some which are rare and harder to interpret. The problem of identifying the presence of these patterns using prior knowledge is clinically significant, and one which is naturally described in terms of statistical machine learning. In this thesis I develop probabilistic dynamical models which are capable of making useful inferences from neonatal intensive care unit monitoring data. The Factorial Switching Kalman Filter (FSKF) in particular is adopted as a suitable framework for monitoring the condition of an infant. The main contributions are as follows: (1) the application of the FSKF for inferring common factors in physiological monitoring data, which includes finding parameterisations of linear dynamical models to represent common physiological and artifactual conditions, and adapting parameter estimation and inference techniques for the purpose; (2) the formulation of a model for novel physiological dynamics, used to infer the times in which something is happening which is not described by any of the known patterns. EM updates are derived for the latter model in order to estimate parameters. Experimental results are given which show the developed methods to be effective on genuine monitoring data.

PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO
COORDENAÇÃO DE APERFEIÇOAMENTO DO PESSOAL DE ENSINO SUPERIOR
CONSELHO NACIONAL DE DESENVOLVIMENTO CIENTÍFICO E TECNOLÓGICO
PROGRAMA DE SUPORTE À PÓS-GRADUAÇÃO DE INSTS. DE ENSINO
A Unidade de Terapia Intensiva (UTI) é um departamento importante dentro do Hospital visto que lida majoritariamente com casos de alta complexidade e gera elevados custos administrativos, o que requer um controle adequado de seus processos. Inconformidades tais como erros em atividades de tratamento e falta de comunicação entre os funcionários são comumente responsáveis pelo baixo desempenho de UTIs e devem ser ajustados para reduzir possíveis danos ao tratamento do paciente. Para avaliar a eficiência de uma UTI, a literatura propõe que sejam estabelecidas métricas que considerem quatro perspectivas - médica ou clínica, econômica, social e institucional – que oferecem uma visão abrangente das atividades (administrativas ou de tratamento) dentro da unidade e seus impactos no pós-tratamento. Entretanto, a avaliação de desempenho em uma UTI não é uma tarefa simples, pois há diversas variáveis a serem consideradas e que podem ser potenciais causas de um mau desempenho. Além disso, não há uma métrica ou indicador padrão-ouro que consegue reter de forma adequadas as informações, sendo que diversas perspectivas devem ser consideradas. Os indicadores mais comuns são A Taxa de Mortalidade Padronizada (Standardized Mortality Ratio, SMR) e o Taxa de Uso de Rescursos Padronizada (Standardized Resource Use, SRU), que contabilizam desfechos de mortalidade (clínicos) e de uso de recursos (econômicos), junto de metodologias propostas para viabilizar a comparação entre diferentes UTIs, identificar de grupos de desempenho e analisar os riscos de mortalidade dos pacientes dentro da unidade, tais como os conceitos de Rankability e Perfis de Risco (Risk Profiles). Além disso, é necessário definir corretamente os desfechos a serem contabilizados em indicadores. Nesse contexto, recomenda-se a combinação de diferentes indicadores e metodologias de forma a complementar e elevar a confiabilidade da análise de desempenho e benchmarking. Com isso, este estudo tem como objetivo analisar um conjunto de UTIs em termos de desempenho quanto à mortalidade e uso de recursos, associando-os com as características das unidades e seus fatores institucionais, para identificar possíveis correlações. A análise foi feita em uma amostra composta por 12.100 pacientes que foram hospitalizados em 116 UTIs, considerando um desfecho em até 60 dias de interação. Este estudo teve como contribuição a combinação de diferentes técnicas e indicadores, e uma discussão a respeito da variabilidade do SMR em comparação à metodologia tradicional. Para este propósito, combinou-se as técnicas da Matriz de Eficiência, Rankability – índice de confiabilidade de um indicador de desfecho, e Perfis de Risco, de forma a obter e avaliar o desempenho de grupos de UTIs. Como resultados, verificou-se que UTIs cuja administração é de domínio Público e que destinam a maioria dos seus leitos ao Sistema Único de Saúde (SUS) brasileiro tiveram mortalidade significativamente alta em relação àquelas de dominínio privado (p-valor menor que 0.05). Além disso, realizou-se um agrupamento das UTIs utilizando quatro diferentes técnicas de clusterização de forma a garantir a máxima confiabilidade do indicador para comparação (Rankability), o que resultou na presença de clusters extremos contendo uma UTI cada, sendo elas a de maior e a de menor SMR, apesar de ambas apresentarem o mesmo conjunto de severidades. Para cada grupo, estimou-se o seu perfil de risco, e verificou-se que pacientes com menor gravidade apresentaram maior variabilidade nos riscos de morte, sendo estes maiores nos grupos com alto SMR e menores em grupos de menor mortalidade, sendo que a dispersão tendeu a ser menor quanto menor for o risco, o que poderia influenciar diretamente no cálculo do SMR. Com isso, por meio de equações matemáticas e simulação por meio de reamostragem, verificou-se que o SMR possui uma limitação em sua escala, que depende diretamente do espectro de gravidade dos pacientes em cada UTI ou grupo de desempenho analisado. O S
Intensive Care Unit (ICU) is an important department within a hospital since it deals mostly with complex cases and it generates the highest amount of costs, thus requiring adequate control on its care treatments. Nonconformities such as poor communication and treatment errors are commonly responsible for a bad performance in ICUs. However, evaluating the performance of an ICU is not an easy task and there are no gold-standard indicators. The most common metrics are the Standardized Mortality Ratio (SMR) and the Standardized Resource Use (SRU), which measure mortality and resource utilization, respectively. Hence, this study aims to analyze different ICUs in terms of mortality, resource use, and institutional factors, combining the methods Efficiency Chart, Rankability and Risk Profile. The analysis was performed considering a total of 12,100 patients in 116 ICUs provided by a clinical trial study. As results, it was verified that most ICUs were from hospitals with public administration (47.41 per cent), which had significantly high lethality rate compared to private hospitals. Four different clustering approaches were tested, which identified similar case-mixes between the best and lower performance groups of ICUs, and a high variability in expected risks for low severity patients. Using a resampling approach, it was evidenced that the mortality indicator varies strongly on low-risk groups of patients, while high-risk patients had a smaller range of SMR values, which may lead to biased conclusions when comparing ICUs with similar mortality and different case-mixes.

Thesis (M. Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2011.
Cataloged from PDF version of thesis.
Includes bibliographical references (p. 71-74).
Extensive bedside monitoring in hospital Intensive Care Units (ICU) has resulted in a deluge of information on patient physiology. Consequently, clinical decision makers have to reason with data that is simultaneously large and high-dimensional. Mechanisms to compress these datasets while retaining their salient features are in great need. Previous work in this area has focused exclusively on supervised models to predict specific hazardous outcomes like mortality. These models, while effective, are highly specific and do not generalize easily to other outcomes. This research describes the use of non-parametric unsupervised learning to discover abstract patient states that summarize a patient's physiology. The resulting model focuses on grouping physiologically similar patients instead of predicting particular outcomes. This type of cluster analysis has traditionally been done in small, low-dimensional, error-free datasets. Since our real-world clinical dataset affords none of these luxuries, we describe the engineering required to perform the analysis on a large, high-dimensional, sparse, noisy and mixed dataset. The discovered groups showed cohesiveness, isolation and correspondence to natural groupings. These groups were also tested for enrichment towards survival, Glasgow Coma Scale values and critical heart rate events. In each case, we found groups which were enriched and depleted towards those outcomes.
by Kanak Bikram Kshetri.
M.Eng.

Thesis: M. Eng. in Computer Science and Molecular Biology, Massachusetts Institute of Technology, Department of Electrical Engineering and Computer Science, 2015.
This electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.
Cataloged from student-submitted PDF version of thesis.
Includes bibliographical references (pages 73-74).
We investigated the relationship between initial lactate levels and ICU patient outcomes using the MIMIC II (version 2.6) database. We divided ICU admissions based on their initial lactate measurement into three groups: admissions with high lactate (above 4.0 mmol/L), admissions with medium lactate (between 2.0 mmol/L and 4.0 mmol/L), and admissions with low lactate (below 2.0 mmol/L). In addition to the ICU population as a whole, we studied sepsis patients using three different criteria (Martin, Angus, and infection with SIRS). We found that increased lactate levels were associated with a higher ICU mortality, higher 30 day mortality, longer ICU length of stay, and higher SOFA and SAPS I severity scores in all ICU admissions and in all three sepsis cohorts. Sepsis patients with high initial lactate levels were the most severely ill of all the patient populations. Sepsis patients identified with the Martin criteria who had high lactate levels had the worst outcomes of the three sepsis cohorts, but had similar average severity scores. This suggests that knowing lactate levels may give predictive value in addition to severity scores. We also investigated the relationship between initial lactate, change in lactate from the first measurement to the second measurement, and ICU mortality. We found that patients with high initial lactate levels in combination with an increase in lactate level typically had poorer outcomes than patients with high initial lactate levels with a decrease in lactate level.
by Hilary G. Mulholland.
M. Eng. in Computer Science and Molecular Biology

This study explores women's experiences of critical illness in Jordanian intensive care units. A narrative approach was employed to access Jordanian women's stories of their critical illness and to study how these accounts changed during the period following their discharge from intensive care. The study was conducted in two hospitals in a major Jordanian city. A purposive sample of 16 women who had spent at least 48 hours in intensive care was recruited over a period of six months, with each woman taking part in between one and three interviews during the six month period. Two focus group discussions were also conducted with 13 ICU nurses drawn from the hospitals in which the women had been patients. These had the aim of encouraging discussion about the development of new supportive care strategies for critically ill women in Jordanian intensive care units. The study findings revealed three main areas: the women's experiences of suffering and pain; their experience of body care; and the impact of the ICU experiences on their lives after discharge home. Experiences of suffering were pervaded with physical, emotional, social and temporal dimensions, interlinked with pain that was often severe, overwhelming, and disturbing to their sleep. The notion of 'nafsi' suffering was employed to describe emotional and social losses, such as loss of family support, which the women experienced. The notion of 'vicarious death' was used to explain the mortal fear women experienced in witnessing the death of others. Loss of body control, the unfamiliar ICU environment, and the sudden onset of illness made it difficult for the women to make sense of their experiences. This study shows that cultural norms and religious beliefs shape the ways in which these Muslim women made sense of their bodies. An analysis of the concept of 'bodywork' is presented: the 'dependent body' captures the women's experiences of changes of their physical status, which meant that from being care providers, they became those in need of care. This involved the experience of a sense of paralysis or disablement, and a complete dependence on their family or nurses. The 'social body' describes the women's feelings and emotions toward their family members. The latter assisted in the care of the women's bodies, but distress, frustration and a sense of loneliness were experienced by the women as a result of the loss of verbal communication with their relatives. The 'cultural body' describes the effect of cultural norms and Islamic religious beliefs on the women's interpretation of their experiences, and the interpretation of male nursing care in the ICU. The 'mechanical body' describes the women's experiences of the ICU machines as extensions of their bodies, and the senses of limbo and ambiguity they encountered during their ICU stay. The recovery period raised many physical, emotional, social, and spiritual issues, which in turn impacted on the women's experiences of their everyday lives. Weakness and tiredness accompanied with difficulties in eating and sleeping made some women feel frustrated and uncertain about their health. Some felt they were a burden upon their families. The meaning of the critical illness experiences were interpreted by some women as an opportunity to value family unity and neighbours' support. For other women, the illness experiences gave them lessons which strengthened their role as mothers and helped them to think positively about their future. This study highlights the importance of considering the cultural and religious preferences among Muslim women in critical care settings. The study recommendations focus on the need to base nursing care on an understanding of the physical, emotional, social, and religious elements of suffering, by exploring the potential of a palliative care approach for nursing critically ill people.

Electrical impedance tomography (EIT) is an emerging medical imaging technique that aims to reconstruct the internal conductivity distribution of a subject from electrical measurements obtained on the skin. In this thesis we explore the promising application of EIT to the respiratory monitoring of humans. We pay particular focus to the forward problem, highlighting the need to have an accurately known external boundary shape and electrode positions on a reconstruction model. A theoretical study of uniqueness results of EIT with an unknown external boundary shape is presented. A novel sensitivity study of the external boundary shape is presented as well as results from a reconstruction algorithm to account for errors in electrode position with simulated data in 3D. We also demonstrate results of a shape correction algorithm from a pilot study of lung EIT with data collected using the fEITER system, and MR images used to inform the external boundary shape of healthy subjects. After image co-registration of the resulting dynamic 3D EIT reconstruction images with the lung-segmented MR image, we outline a novel mutual information performance criterion to measure the quality of reconstructed images. We also outline the computation of the forward problem of the complete electrode model in 3D using high order polynomial finite elements and present convergence results in 2D for the continuum, point and complete electrode model. Our numerical study demonstrates that the convergence rate of the forward problem is independent of the polynomial approximation order for the complete electrode model and there is no global convergence for the point electrode model in the energy norm. Reconstructed conductivity images can be difficult to interpret at the bedside. Moreover clinicians would like clinically meaningful indices, such as regional lung compliance, to determine the pathologies of patients in real time. By modelling the respiratory system as a coupled time dependent system of simple mechanical functional units, we propose a novel methodology to couple mechanical ventilation and EIT. The mechanical properties of the lungs are estimated through an inverse coefficient problem on coupled ODEs, with the measurable data being the time series of pressure at airway opening and interior air volume data. We present results with simulated data as well as a discussion on extensions and limitations to the mechanical models. Finally we present a theoretical discussion of anisotropic EIT. It is well known that any diffeomorphism fixing points on the boundary gives rise to a conductivity with the same electrical measurements on the skin, generating a large class of conductivities that are electrically equivalent. We define novel classes of anisotropic media with constraints on their eigenspace: prescribed eigenvalues, prescribed orthogonal coordinates, prescribed eigenvectors, fibrous and layered conductivities. By drawing analogies with elasticity theory, we discuss how these constraints on the eigenspace restrict the set of diffeomorphisms fixing points on the boundary, and present two uniqueness results for anisotropic conductivities with prescribed eigenvalues and prescribed eigenvectors.

This electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.
Thesis: S.M. in Technology and Policy, Massachusetts Institute of Technology, School of Engineering, Institute for Data, Systems, and Society, 2019
Cataloged from student-submitted PDF version of thesis.
Includes bibliographical references (pages 121-130).
Patients in intensive care routinely have their blood glucose monitored and controlled using insulin. Two decades of on-going research has attempted to establish optimal glucose targets and treatment policy for patients with hyperglycemia in the intensive care unit (ICU). These efforts rely on the assumption that health care providers can reliably meet given targets. Significant proportions of the ICU population are either hypoglycemic or hyperglycemic and poor blood glucose control may lead to adverse patient outcomes. This thesis analyses approximately 20,000 ICU stays at the Beth Israel Deaconess Medical Center (BIDMC) which occurred between 2008 and 2018. These data are used to describe the state of clinical practice in the ICU and identify areas where treatment may be suboptimal. Even at a world-renowned teaching hospital, blood sugars are not optimally managed. 41.8% of diabetics and 14.2% of non-diabetics are severely hyperglycemic (>215mg/dL) each day. Insulin boluses are given more frequently than insulin infusions, despite guidelines recommending infusions for most critical care patients. When infusions are given, rates do not follow a consistent set of rules. Blood sugar management faces several challenges, including unreliable readings. Laboratory and fingerstick measurements that were taken at the same time had an R² of only 0.63 and the fingerstick measurements read on average 10mg/dL higher. Overcoming these challenges is an important part of improving care in the ICU. It is hoped that publicly sharing the code used to extract and clean data used for analysis will encourage further research. Code can be found at https://github.com/lawbaker/MIMIC-Glucose-Management
by Lawrence Baker.
S.M. in Technology and Policy
S.M.inTechnologyandPolicy Massachusetts Institute of Technology, School of Engineering, Institute for Data, Systems, and Society

The rapid digitalization of the healthcare domain in recent years highlighted the need for advanced predictive methods particularly based upon deep learning methods. Deep learning methods which are capable of dealing with time- series data have recently emerged in various fields such as natural language processing, machine translation, and the Intensive Care Unit (ICU). The recent applications of deep learning in ICU have increasingly received attention, and it has shown promising results for different clinical tasks; however, there is still a need for the benchmark models as far as a handful of public datasets are available in ICU. In this thesis, a novel benchmark model of four clinical tasks on a multi-center publicly available dataset is presented; we employed deep learning models to predict clinical studies. We believe this benchmark model can facilitate and accelerate the research in ICU by allowing other researchers to build on top of it. Moreover, we investigated the effectiveness of the proposed method to predict the risk of delirium in the varying observation and prediction windows, the variable ranking is provided to ease the implementation of a screening tool for helping caregivers at the bedside. Ultimately, an attention-based interpretable neural network is proposed to predict the outcome and rank the most influential variables in the model predictions’ outcome. Our experimental findings show the effectiveness of the proposed approaches in improving the application of deep learning models in daily ICU practice.

End-of-life care (EOLC) has become a significant area of expertise in the intensive care unit (ICU). Critical care nurses are the primary caregivers of patients in the ICU and they provide EOLC for patients and families daily. Nurses have portrayed EOLC as difficult and demanding work; yet, they have also described their experiences of providing EOLC as rewarding, gratifying, and a privilege. The purpose of this study was to explore nurses’ meaningful experiences with providing EOLC for patients and families in the context of the ICU. Van Manen’s approach to interpretive phenomenology was used. Unstructured face-to-face interviews were conducted with six registered nurses who were employed in a medical/surgical tertiary care ICU. The interviews were audio-recorded, transcribed, and analyzed. The essence of nurses’ meaningful experiences in providing EOLC was ‘being able to make a difference’. For the nurses, being able to make a difference reflected their efforts to create a good death for the dying patient and their family. The nurses had to navigate a variety of challenges that affected the creation of a good death, however, they made it work by building relationships quickly with families, taking care of themselves, and recognizing it’s a privilege to provide EOLC. These research findings contribute to an expanding body of knowledge and understanding with regards to nurses’ role with the provision of EOLC in the ICU.

Objective: The Patient Self-Determination Act of 1990 (PSDA) protects a patient’s right to predetermine the level of life-supporting care they are willing to receive (U.S. Department of Health and Human Services, 1993). In Arizona, the advance directive (AD) complies with the PSDA and is used to guide care in the event of cardiopulmonary failure. The AD may indicate “do not resuscitate” (DNR), which prohibits cardiopulmonary resuscitation in the event of cardiac arrest. In the institution used for this project, a palliative care team assists with identifying goals of care and helps guide interventions consistent with the AD. The purpose of this Doctor of Nursing Practice (DNP) project was to complete a retrospective chart review and identify patients admitted to the medical intensive care unit (ICU) with a DNR as indicated by a copy of the AD in the electronic health record (EHR) and determine if they received a palliative care consultation. This information could support a quality improvement project led by the DNP-prepared AGACNP focused on ensuring a palliative care consultation within 48 hours of admission for patients admitted to the ICU with a DNR. Methods: A search of the EHR identified patients admitted to the medical ICU over a 12-month period. The EHR of patients admitted with a DNR were reviewed to determine if they received a palliative care consultation during the ICU stay and the patient’s final disposition. Findings: A total of 38 patients had an AD indicating DNR status on admission to the medical ICU. Of those patients, 26 (68.4%) received a palliative care consultation. Twelve patients (31.6%) with a DNR status on admission did not receive a palliative care consultation. Additionally, five patients with a DNR (13.16%) died in the ICU without receiving a palliative care consultation. Conclusion: Twelve patients with an AD indicating a DNR did not receive a palliative care consultation, and five of those patients died in the ICU. The findings from this project support a quality improvement project to implement palliative care consults to review goals of care for patients with a pre-existing AD indicating a DNR code status.

CoordenaÃÃo de AperfeÃoamento de Pessoal de NÃvel Superior
Hospitalization of the newborn is necessary when health conditions require immediate assistance for their recovery. Humanized actions in the neonatal unit have been developed in order to make it less painful separation parent-child when it needs technological support and team of trained professionals. It was aimed to analyze the perception and knowledge of the nursing team on the promotion of humanized care for newborn in a Neonatal Intensive Care Unit . It is a qualitative study conducted in a public hospital, large, tertiary level, in Fortaleza, Brazil, in the months October and November 2015, after approval by the Research Ethics Committee, under Protocol N. 1,191,339. The subjects were 14 nurses and 20 nursing technicians working in neonatal care. The data collected through semi-structured interviews consist identification data and five guiding issues that permeate the knowledge of the nursing team about the care and promotion of humanized care in the UTIN. In addition, we used no-participant observation and field diary. For analysis, we sought to Bardin technique that extracted the three categories lines: âTaking care of the human personâ, ânursing contributions to the humane careâ and âFactors that affect the quality of humanized care.â The results showed that the nursing team understands humanization as an indispensable element for the comprehensive care to the baby and family, which was observed from the speeches of welcome, restoring health and disease of the newborn process. The professionals had knowledge of the humanized care, played their actions conscious, oriented and appreciative way about the quality of neonatal care and parents who face the challenges inherent in the admission process. We conclude that the performance of these professionals permeates compliance with the regulations of the National Humanization Policy regarding humanized care to the newborn, family and neonatal ambience. It is believed that such actions minimize the impact caused by the characteristics of the disease treatment as well as stressors.
A hospitalizaÃÃo do recÃm-nascido faz-se necessÃria, quando as condiÃÃes de saÃde requerem assistÃncia imediata para o seu restabelecimento. As aÃÃes humanizadas na unidade neonatal tÃm sido desenvolvidas, a fim de tornar menos dolorosa à separaÃÃo pais-filho, quando este necessita de suporte tecnolÃgico e equipe de profissionais capacitados. Objetivou-se analisar a percepÃÃo e conhecimentos da equipe de enfermagem sobre a promoÃÃo do cuidado humanizado ao recÃm-nascido internado na Unidade de Terapia Intensiva Neonatal (UTIN). Trata-se de estudo qualitativo, realizado em hospital pÃblico, de grande porte, nÃvel terciÃrio, em Fortaleza-CE-Brasil, nos meses outubro e novembro de 2015, apÃs aprovaÃÃo pelo Comità de Ãtica em Pesquisa, sob Protocolo n 1.191.339. Os sujeitos foram 14 enfermeiros e 20 tÃcnicos de enfermagem atuantes na assistÃncia ao neonato. Os dados coletados, por meio de entrevista semiestruturada, consistem dados de identificaÃÃo e cinco questÃes norteadoras, que permeiam o conhecimento da equipe de enfermagem acerca do cuidado e a promoÃÃo da assistÃncia humanizada na UTIN. Ademais, utilizou-se observaÃÃo nÃo participante e diÃrio de campo. Para anÃlise, sÃntese e descriÃÃo, buscou-se a tÃcnica de Bardin, que se extraÃram das falas trÃs categorias: âCuidar do ser humanoâ, âContribuiÃÃes de enfermagem para o cuidado humanizadoâ e âFatores que interferem na qualidade do cuidado humanizadoâ. Os resultados revelaram que a equipe de enfermagem compreende a humanizaÃÃo como elemento indispensÃvel para o cuidado integral ao bebà e famÃlia, o que se observou desde as intervenÃÃes de acolhimento, ao restabelecimento do processo saÃde-doenÃa do neonato. Os profissionais apresentaram conhecimentos acerca do cuidado humanizado, desempenharam suas aÃÃes de forma consciente, orientada e sensibilizada, quanto à qualidade da assistÃncia ao neonato e aos pais que enfrentam os desafios inerentes ao processo de internaÃÃo. Percebe-se, portanto, que a atuaÃÃo desses profissionais permeia o cumprimento aos regulamentos da PolÃtica Nacional de HumanizaÃÃo. Conclui-se que o cuidado humanizado aplicado nessa ambiÃncia à essencial ao recÃm-nascido e famÃlia, uma vez que minimiza o impacto causado pelas caracterÃsticas da doenÃa, tratamento, bem como os fatores estressantes da UTIN.

Patient satisfaction is an outcome of care that represents the patient's judgment on the quality of care. An important aspect of quality affecting patient's judgment can be attributed to patients' expectations and experiences regarding nursing care according to type of unit. The purpose of this study was to examine differences between patients' perceptions of satisfaction with nursing care in critical care units and medical units in one Midwestern hospital.The conceptual framework was "A Framework of Expectation" developed by Oberst in 1984, which asserted that patients have expectations of hospitals and health care professionals regarding satisfaction and dissatisfaction with care. The instrument used to measure patient satisfaction was Risser's Patient Satisfaction Scale, with three dimensions of patient satisfaction: (a) Technical-Professional, (b) Interpersonal-Educational, (c) Interpersonal-Trusting. The convenience sample included 99 patients50 from critical care units and 49 from medical wards. Participation was voluntary. The study design was comparative descriptive and data was analyzed using a t-test.The demographic data showed that the majority of patients had five or more admission. About one-third of the patients were 45-55, 56-65, 66-75, respectively. Findings related to the research questions were that: (a) 84 percent of the respondents rated overall satisfaction in the satisfactory to excellent range, (b) results of a t-test showed significant differences in overall patient satisfaction with patients being more satisfied with care in critical care units. Significant differences were found in three subscales with critical care being more satisfied. No relationship was found between patient satisfaction and age/and/or type of unit.Conclusions were that in both medical and critical care units patients were more satisfied with Technical-Professional and Interpersonal-Trusting than with Interpersonal-Educational. Also noted was that patients in the units where nurse-to-patient ratio was higher participants perceived that nurses had more time, energy and ability to meet patient expectation. Implications call for analysis of nurse/patient ratio in relation to patient satisfaction and nurses in relation to patient education as well as patient's perceptions of getting their needs met.
School of Nursing

Thesis (MScMedSc (Interdisciplinary Health Sciences. Speech-Language and Hearing Therapy))--University of Stellenbosch, 2007.
Noise is a noxious stimulus with possible negative physiological effects on the infant, especially in the Neonatal Intensive Care Unit (NICU). The present study conducted a detailed noise assessment in a NICU of a state hospital in the Cape Metropole and documented 6 infants’ physiological responses to noise levels. Noise levels ranged from 62.3-66.7dBA (LAeq), which exceed all American and British standards (50dBA -60dBA) for a NICU. Continuous exposure to noise of these levels is potentially harmful to the infants’ auditory system and health stability. The general well-being of the staff working in the NICU may also be compromised. Analysis of the noise events revealed that staff conversations were the largest single contributor to the number of noise events, while the largest single non-human contributor was the alarm noise of the monitors. No significant correlations were found between the heart rates and noise levels and the respiratory rates and the noise levels for any of the participants in either room. The NICU was found to be an extremely reverberant environment, which suggested that the NICU noise levels were largely a result of reverberant noise reinforcements. NICU nursing staff’s most common suggestion for noise abatement strategies was reduction of staff conversation. Results of this study highlight the need for NICU noise abatement to optimise newborn patient care, reduce the risk of acoustic trauma and to improve the neonate’s quality of life, thus enhancing the infant’s physiologic stability, growth and health.

Critically ill patients admitted to the intensive care unit (ICU) commonly develop severe muscle wasting and weakness and consequently impaired muscle function. This not only delays respirator weaning and ICU discharge, but has deleterious effects on morbidity, mortality, financial costs, and quality of life of survivors. Acute Quadriplegic Myopathy (AQM) is one of the most common neuromuscular disorders underlying ICU muscle wasting and paralysis, and is a consequence of modern intensive care interventions, although the exact causes remain unclear. Muscle gene/protein expression, intracellular signalling, post-translational modifications, muscle membrane excitability, and contractile properties at the single muscle fibre level were explored in order to unravel the mechanisms underlying the muscle wasting and weakness associated with AQM and how this can be counteracted by specific intervention strategies. A unique experimental rat ICU model was used to address the mechanistic and therapeutic aspects of this condition, allowing time-resolved studies for a period of two weeks. Subsequently, the findings obtained from this model were translated into a clinical study. The obtained results showed that the mechanical silencing of skeletal muscle, i.e., absence of external strain (weight bearing) and internal strain (myosin-actin activation) due to the pharmacological paralysis or sedation associated with the ICU intervention, is likely to be the primary mechanism triggering the preferential myosin loss and muscle wasting, features specifically characteristic of AQM. Moreover, mechanical silencing induces a specific gene expression pattern as well as post-translational modifications in the motor domain of myosin that may be critical for both function and for triggering proteolysis. The higher nNOS expression found in the ICU patients and its cytoplasmic dislocation are indicated as a probable mechanism underlying these highly specific modifications. This work also demonstrated that passive mechanical loading is able to attenuate the oxidative stress associated with the mechanical silencing and induces positive effects on muscle function, i.e., alleviates the loss of force-generating capacity that underlie the ICU intervention, supporting the importance of early physical therapy in immobilized, sedated, and mechanically ventilated ICU patients.

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Bachelors
Nursing
Nursing

The growing concern over the nursing shortage has affected the intensive care unit (ICU) and how these units provide quality care, adhere to best practices, and maintain high satisfaction scores. Implementing telemedicine technology allows the ICU to have additional staff available, via cameras at an offsite location, to assist with patient care. The purpose of this project was to evaluate the potential benefits of telemedicine application used within an ICU on quality of care, adherence to best practices, and satisfaction, as evidenced by data from the hospital's telemedicine dashboard. The goals of this project were to reduce length of stay, increase staff satisfaction, and increase compliance with best practices. The diffusion of innovation theory was used to bring about successful change among team members in the ICU. The Focus Plan, Do, Study, Act methodology was used to determine what improvements were needed in the ICU. The evaluation of the telemedicine unit demonstrated early signs of positive progress. Actual length of stay (3.25 days) from the hospital's telemedicine dashboard was less than the predicted length of stay (3.8 days), and adherence to best practice was at or above target (95%) when compared to all telemedicine units across the nation, as provided by the telemedicine dashboard. Implementing a telemedicine unit will bring about a transparency and standardization of Intensive Care services, leading to positive social change in the organization. This social change, combined with the success of the unit, can influence other non-academic healthcare institutions to pursue telemedicine technology.

Abstract Guidelines and instructions derived from adult randomized controlled trials are generally followed in pediatric ventilation, as there have been no large trials of this kind in children. Current treatment strategies aim at preventing ventilator-induced lung injury by avoiding too large tidal volumes, supporting patient's spontaneous breathing and preventing lung collapse with positive end-expiratory airway pressure. Neurally adjusted ventilatory assist (NAVA) is a novel ventilation mode that provides respiratory support proportional to the electrical activity of the diaphragm (Edi). The aims of this thesis were to assess daily practices in pediatric ventilation in Finland and to compare NAVA with conventional ventilation in terms of safety and quality of care. Current treatment practices were studied with a preliminary enquiry and a 3-month prospective survey that was offered to all hospital units providing ventilatory care for children <16 years of age. NAVA was compared with current standard ventilation in a crossover trial involving 18 pediatric patients and in a larger controlled trial in which 170 patients were randomized to receive either NAVA or conventional ventilation. Respiratory distress was the most common indication for invasive ventilation in neonates, and postoperative care in older children. The principles of lung-protective ventilation were generally accepted and the goals were achieved in the majority of treatment episodes. The low incidence of pediatric invasive ventilation favours centralization. NAVA proved to be a safe and feasible primary ventilation mode in pediatric intensive care. It improved patient-ventilator synchrony and led to lower peak inspiratory pressures and oxygen requirements. It also reduced the need for sedation during longer treatment periods. Information derived from the Edi-signal could be used to optimize the level of sedation and to identify patients with a potential risk of extubation failure
Tiivistelmä Nykyisin käytössä olevat menetelmät lasten hengityskonehoidossa perustuvat suurelta osin aikuisilla tehtyihin tutkimuksiin ja totuttuihin tapoihin, sillä lasten hengityskonehoidosta on olemassa vain vähän tutkittua tietoa. Hengityskonehoidon aiheuttamaa keuhkovauriota pyritään ehkäisemään välttämällä suuria kertahengitystilavuuksia, tukemalla potilaan omia hengityksiä ja säilyttämällä ilmateissä positiivinen paine uloshengityksen aikanakin. Neuraalisesti ohjattu ventilaatio (NAVA) on uusi hengityskonehoitomuoto, joka tukee potilaan omia hengityksiä ohjaamalla koneen antamaa tukea pallealihaksen sähköisen signaalin avulla. Tämän tutkimuksen tavoitteena oli selvittää lasten hengityskonehoidon nykytilaa Suomessa sekä tutkia, voidaanko NAVAa käyttämällä parantaa hoidon laatua ja turvallisuutta. Nykyisiä hoitokäytäntöjä selvitettiin vuonna 2010 kysely- ja seurantatutkimuksella, johon kutsuttiin mukaan kaikki Suomessa lapsia ja vastasyntyneitä hoitavat tehohoito-osastot. NAVAa verrattiin nykyiseen hengityskonehoitoon 18 potilaan vaihtovuoroisessa tutkimuksessa sekä suuremmassa 170 lapsipotilaan satunnaistetussa kontrolloidussa tutkimuksessa. Eri syistä johtuvat hengitysvaikeudet ovat yleisin syy hengityskonehoitoon vastasyntyneillä ja suurten leikkausten jälkeinen hoito isommilla lapsilla. Keuhkoja säästävän hoidon periaatteet ovat Suomessa yleisesti hyväksyttyjä ja toteutuvat valtaosassa hoitojaksoja. Hengityskonehoitojaksojen määrän vähäisyys puoltaa hoidon keskittämistä suuriin sairaaloihin. NAVAa käyttämällä hengityskoneen antama tuki ajoittuu paremmin potilaan omien hengitysten mukaan ja sen avulla saavutetaan matalammat ilmatiepaineet sekä vähäisempi lisähapen tarve. Pitkissä hoitojaksoissa NAVA vähentää rauhoittavan lääkityksen tarvetta, ja pallealihaksen signaalia seuraamalla on mahdollista optimoida sedaatioaste aikaisempaa tarkemmin. Palleasignaalia voidaan myös hyödyntää arvioitaessa potilaan valmiutta hengitystuesta vieroittamiseen

While the phenomenon of grief has received considerable attention and has been researched at length, there is a paucity of literature that has focused on health care professionals' experience of grief. The purpose of this study was to investigate the grief experience of pediatric intensive care nurses when their patients die. A phenomenological method was used in this study in order to obtain rich descriptions of nurses' experience of grief within their workplace. The purposive sample consisted of six registered nurses employed in an intensive care unit in a university-teaching pediatric hospital. In-depth, semi-structured interviews were conducted with the study participants in order to generate the data base. The audio-taped interviews were transcribed and analyzed for recurring themes emerging from the data according to the procedure outlined by Colaizzi. These nurses acknowledged they suffered multiple exposures to children's deaths and experienced grief. The interviews revealed eight themes that included one about their grief responses--hurting; two that described the influencing contextual factors--nurse-family unit relationship and dissonance, and five that related to coping strategies employed to manage their feelings of grief--self-expression, self-nurturance, termination of relationship activities, engaging in control taking activities and self-reflection. Further analysis revealed that managing grief effectively was an experiential learning process for the participants. The resultant themes were compared with the broader literature on grieving the loss of a significant other, grief and the health care professional, and the literature that addressed issues of occupational stress in the care of the critically ill, the dying, and the bereaved. The findings of this study could encourage further research that examines interventions designed to enhance the type of education and support needed in relation to the grief experience of nurses.

We have assessed the introduction of a commercially available computerised physiological trend monitoring network into a neonatal intensive care area. The attitudes of staff and parents were on the whole favourable, with the majority feeling that infant care benefited from the introduction of computers. A detailed study of the effects of computerised physiological monitoring on patient outcome in both short and medium term, showed no significant benefits. The computers improved both the quality and accuracy of the stored infant physiological data. Artefact was predominantly predictable; it could be ignored in real time trends and removed from recorded data prior to statistical analysis. Neonatalogy is a relatively new science, and a continuously expanding physiological data source could help to improve patient care through research. Three areas were explored: (a) Reference blood pressures ranges were established for very low birth weight infants, using more detailed information on a larger group of infants than previously possible. (b) Infants with retinopathy of prematurity compared to those without the disease, did not differ significantly in the amount of time they spent with a continuously monitored transcutaneous oxygen greater than 12 kPa. (c) Previously undescribed blood pressure waves were identified. Associated with hypoxia, they may help improve understanding of fetal autonomic development. Although unable to demonstrate an improvement in patient outcome resulting from the introduction of a computerised physiological network (possibly due to poor outcome measurements), we have demonstrated improved staff confidence, better physiological record and the opportunity for improvement in care through research.

Thesis (M.S.N.)--University of North Carolina at Greensboro, 2007.
Title from PDF t.p. (viewed Mar. 3, 2008). Directed by Susan Letvak; submitted to the School of Nursing. Includes bibliographical references (p. 53-58).

This study investigates the manner in which intensive care nurses perceive, and take action to meet, the needs of the critically ill child, with the aim of answering three research questions: 1. What care is provided for the critically ill child in the intensive care unit? 2. How do nurses identify and act on the needs of the critically ill child? 3. What dimensionso f knowing underpint he way in which nursesp erceivea nd act on the needs of the critically ill child? A modified Delphi technique was used to provide an expert opinion on the needs of the critically ill child. A case study approach, informed by ethnographic principles, was used to structure observationsa nd interviewsi n one paediatrici ntensivec are unit (ICU) and two general ICUs. Carper's (1978) four dimensions of knowing (aesthetic, ethical, empiricala nd personakl nowing) underpinnedc ases tudy data collectiona nd analysis. The study findings expanded Carper's original work by identifying an additional dimension of knowing, referred to as contextual knowing, which nurses used to relate empirical and aesthetic knowledge to the individual child. This influenced their perception of whether a changed situation constituted a need. The five dimensions of knowing were used in an inter-related way by the nurses; no hierarchy was evident as priority was given to the dimension most relevant in a given situation. The findings highlight the key role of the nurse at the bedside (the allocated nurse) in identifying, legitimising and acting on the needs of the child. The importance of experience and confidence in enabling the nurses to undertake activities such as gate-keeping andprioritising in order to meett he needso f the child was also emphasisedT. he shift leader supported the nurses and co-ordinated the overall activity on the Unit. There was no overall difference in the role adopted by families in the General and Paediatric ICUs. Nursing records were an historical record of care, rather than a plan of care, and did not detail decision-making and prioritising activity frequently observed in the intensive care units. Recommendations are made for strategies to retain experienced nursing staff at the bedside, the active promotion of learning through experience, incorporating prioritising of care in records and a more inclusive framework for measuring and costing nursing workload in ICU

The literature review highlighted the continuing problem of hospital acquired infection. This study examined this problem in depth, in a high-risk area, the Neonatal Intensive Care Unit. A multi-centre study was conducted using multi-methods in order to capture data regarding nurses' infection control practices in neonatal units. Ninety nurses/ nursery nurses from six neonatal units were included in the study. Non-participant observation was used to investigate nurses' existing infection control practices, interviews were used to explore nurses' opinions of infection control, questionnaires were used to collect demographic data about the sample and assess nurses' knowledge of infection control issues and a Likert-type scale was developed to investigate the unit atmosphere/environment. Microbiological laboratory work was undertaken to compare the efficacies of three products (soap, alcohol hand rub and chlorhexidine) at removing/reducing the numbers of bacteria found on the hands. The effectiveness of gloves at preventing contamination of the hands was also assessed. Finally, the numbers of bacteria recovered from the hands of university administrative staff and nurses were compared to determine whether or not nurses had higher numbers of bacteria on their hands due to the number of organisms they are exposed to and their increased frequency of hand hygiene. Overall, nurses' hand hygiene practices were found to be relatively poor. However, there was some evidence that length of shift, as a proxy indicator of fatigue, and unit atmosphere/environment may influence nurses' infection control practices. Opinions and knowledge were not associated with observed practice. Nursery nurses had lower hand hygiene scores and knowledge scores than nurses and increased experience in the neonatal unit was associated with increased infection control knowledge. The number of bacteria recovered from the hands of nurses was significantly higher than the numbers of bacteria recovered from the hands of administrative staff. In the clinical setting, chlorhexidine was found to be the only product that consistently removed significant numbers of bacteria from the hands. Indeed, the alcohol hand rub was found to increase the numbers of bacteria on the hands. The number of bacteria recovered from the hands did not differ when gloves were worn. This suggests the inside of gloves may be providing a medium for the multiplication of bacteria. However, the number of bacteria recovered from the surface of used gloves was significantly lower than the numbers of bacteria recovered from nurses' hands after nursing activities. The use of gloves for all procedures on the neonatal unit may be advantageous.