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1
Prentice, Jennifer Lorna. "An evaluation of clinical practice guidelines for the prediction and prevention of pressure ulcers." University of Western Australia. School of Surgery and Pathology, 2007. http://theses.library.uwa.edu.au/adt-WU2007.0170.
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[Truncated abstract] Pressure ulcers affect a substantial proportion of patients admitted to health care services worldwide imposing considerable physical, social and economic burdens on patients and communities. As largely preventable wounds their prevalence is likely to escalate as the life expectancy and incidence of people living longer with other chronic diseases increases. Clinical practice guidelines are promulgated as evidence-based tools to assist clinicians and patients to determine care strategies, reduce inequities in healthcare provision and lower the burden of illness through improved health outcomes. This prospective multi-centre study evaluated the effectiveness of the Australian Wound Management Association?s Clinical Practice Guidelines for the Prediction and Prevention of Pressure Ulcers within ten selected Australian tertiary hospitals. The data, collected in 2000, examined pressure ulcer prevalence in a subset of five of these hospitals and junior doctors’ and nurses’ knowledge of pressure ulcers in all ten hospitals at two time points, before and after guideline implementation. Pressure ulcer prevalence was ascertained by two surveyors who independently examined the skin of all consenting adult patients on a designated day. ... In addition, it is recommended that all Australian health care facilities providing in-patient, residential aged or domiciliary care services be required to demonstrate compliance with the Australian Council of Health Care Standards framework for pressure ulcers in order to be an accredited healthcare provider. The use, benefits and cost utility of pressure reducing / relieving devices in the prediction and prevention of pressure ulcers in Australian contexts of care, is required to substantiate current guideline recommendations and assist service providers and clinicians in choosing devices according to patient need. A recommendation will be forwarded to the Australian Wound Management Association suggesting the Association develop a toolkit to facilitate implementation and adoption of their guidelines. It is recommended that training of doctors, nurses and allied health personnel in the prediction, prevention and management of pressure ulcers should be of a higher priority within under-and-postgraduate education programs. From a community perspective and with a view to improving the health of the community, it is proposed that pressure ulcers be the subject of ongoing health promotion campaigns aimed at raising patients’, caregivers’ and community awareness of the potential for pressure ulcers due to the secondary effects of lifestyle related chronic diseases and ensuing reduced levels of immobility.
2
Berry, Judith. "Pressure ulcer prevention in the perioperative environment." Title page, table of contents and overview only, 2004. http://hdl.handle.net/2440/37709.
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There are many terms used to describe pressure ulcers: pressure sores, decubitus ulcers, bedsores, and pressure necrosis or ischaemic ulcers. Essentially they all describe damage to the patient's skin and underlying tissue. The nursing literature abounds with information about the risk, grading, prevention and treatment of pressure ulcers. These ulcers are a problem in hospital and long term care facilities, and are a major cause of morbidity. In the hospital setting they contribute to an extended length of stay and by doing so 'block' the bed for use by another patient. The ulcers are difficult to treat, are an ongoing cause for pain and discomfort for the patient and can be a strain on hospital finances. Pressure ulcers are not unique to modern times, as they have been discovered on the remains of an Egyptian mummified body (Armstrong & Bortz 2001). This would suggest that the problem dates back to the Pharoahs, and has continued to be a challenging problem throughout the centuries (Bridel 1992). The escalating costs of treating these ulcers today, has brought about an emphasis on the risk factors, prevention and the appropriate interventions, rather than an acceptance of these ulcers as a tolerable ondition (Bridel 1992). In the operating room, nurses are faced with unique challenges when caring for their patients. This is due to difficulty in caring for patients under the influence of the anaesthesia required for surgery, long periods of forced immobility and the inability of the patient to perceive pain and discomfort from the pressure of the hard surface of the operating room table. These problems are increased by nurses' inability to gain access to the patient because of the sterile drapes required to cover the patient for surgery. Armstrong and Bortz (2001) present information from one study in which it is stated that surgical patients have 90% greater chance of developing pressure ulcers than medical patients. One reason for this may be due to the limited information available in regard to the most effective support surface to place on top of the operating room table. This gap in information is problematic for operating room nurses as it limits their ability to select the most effective item of equipment, and determine if the chosen equipment reduces pressure on tissue intra- operatively. The most effective operating room table mattress used and the skills and knowledge of the operating room nurse about the aetiology and prevention of pressure ulcer prevention, are important aspects of nursing care and can influence patient outcomes. The potential for complications to occur may be dependent on single or combined factors such as the patient's age, disease processes, nutritional status and mobility. Preparatory and supportive nursing interventions for surgical procedures based on best available evidence, nursing experience and patient preference, can reduce the incidence of pressure ulcer development in the perioperative environment. This doctoral portfolio contains four separate sections related and linked together by a common theme - pressure ulcer prevention in the perioperative environment. This first section of the portfolio situates the topic and provides a brief overview of the portfolio. The second section is a critical review of the literature pertaining to the most commonly used operating room table mattresses, and the effectiveness of these mattresses in the prevention of pressure ulcer development. This review highlighted a lack of quality research in this area, and while many evaluations have been undertaken to determine the effectiveness of perating room table mattresses, the results are contradictory concerning the patients, exposures and interventions. Because of issues related to the methodological quality of published research in this area a systematic review using meta- analysis was not possible rather a critical review of the research literature is used. The third section of the portfolio reports on a hermeneutic ethnography of the perceived skills and knowledge of nurses in the prevention of pressure ulcer development in the perioperative environment. This study was designed to determine if pressure ulcer prevention forms an aspect of the everyday practice of perioperative nurses. This review has highlighted the need for operating room nurses to review practices when caring for patients in the perioperative environment particularly in respect of pressure ulcer prevention. The fourth and final section of the portfolio summarises the research and provides recommendations for nursing practice and further research in the area of pressure ulcer prevention in the perioperative environment.Thesis (D.Nurs.)--Department of Clinical Nursing, 2004.
3
Tasker, Lorna Helen. "Seat shape acquisition, analysis & optimisation for pressure ulcer prevention." Thesis, Swansea University, 2014. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.678383.
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Or, Lai-po, and 柯麗寶. "Topical negative pressure in wound management." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2010. http://hub.hku.hk/bib/B4462623X.
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Sharp, Catherine Anne Public Health & Community Medicine Faculty of Medicine UNSW. "Pressure ulcers: risk, physiology and the magnitude of the problem in a Sydney home nursing service." Awarded by:University of New South Wales. School of Public Health and Community Medicine, 2006. http://handle.unsw.edu.au/1959.4/25486.
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Background Patients that develop a pressure ulcer whilst in hospital can expect to stay at least four extra days. Once discharged to the community for continuation of wound management for pressure ulcers, the epidemiology of these patients, together with patients who develop pressure ulcers at home, is unknown. Aims a) To estimate the magnitude of the problem of pressure ulcers in the Northern Sydney Home Nursing Service (NSHNS). b) To examine the evidence for inclusion of parameters in pressure ulcer risk screening tools and establish the frequency of use for patients identified with pressure ulcers. c) To test for differences in outcome in patients who have developed pressure ulcers either in hospital or in the community. Methodology A retrospective review of hospital and community records of patients identified with pressure ulcers, during a prevalence survey in May 2002, was carried out. All patients were followed for 12 months or to healing of the pressure ulcers. Results Nineteen patients, eight male and 11 female, median age 80 years, developed 41 pressure ulcers. Patients developed between one and seven pressure ulcers with a ratio of 2.2 per patient. The majority (14/19, 73%) of pressure ulcers developed in the community with just over one quarter (5/19, 26%) in hospital. Only three of 19 (15.7%) patients were screened for pressure ulcer risk. Pressure ulcers took an average of 70 days to heal. An estimated 1563 community nurse visits were required for wound management of the 41 pressure ulcers in 19 study patients. One patient was still being treated for a pressure ulcer at the end of the 12-month study period. Four patients were discharged and nine (47%) died. Conclusion The prevalence of pressure ulcers is a rare adverse event in the NSHNS. Screening tools were not used to identify those at risk. Interventions to prevent pressure ulcers did not occur until after the development of pressure ulcers.
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黃美婷 and Mei-ting Wong. "Evidence-based guidelines for the prevention of pressure ulcers using pressure-relieving support surface for bedbound elderly." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2013. http://hdl.handle.net/10722/193060.
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Background
Pressure ulcer prevention has been an important and a common health care problem in every health care setting. Pressure ulcers are the clinical situation that can be avoided. To prevent pressure ulcer, the main strategy is to reduce either the pressure contact time, or magnitude of pressure, between a patient and his or her support surface. Pressure-relieving support surfaces are shown to be effective in preventing the development of pressure ulcer with strong evidence support.
In Hong Kong, the low compliance of the ward staff to apply pressure-relieving support surfaces for at risk patients is compared with other countries. Therefore, a feasible evidence-based guideline of using pressure-relieving support surfaces to prevent pressure ulcers stands out from the multi-interventions pressure ulcer prevention guideline to maximize its effectiveness in this clinical issue.
Purpose
Reviewing the needs in modifying the current clinical practice and guidelines in local setting, the aim of the dissertation is to develop evidence-based guidelines for prevention of pressure ulcers using pressure‐relieving support surface for bedbound elderly. The findings are used to develop recommendations for nursing guideline to prevent pressure ulcers through the utilization of pressure‐relieving support surface in Hong Kong public hospital setting.
Methods
Four electronic databases published from 1937 to 2012 were searched. All the studies extracted were randomised controlled trials while focusing on using pressure-relieving support surfaces to prevent pressure ulcers of adult patients. The quality of each study was assessed by a methodology checklist, the Scottish Intercollegiate Guideline Network in order to justify the level of evidence of the studies’ internal validity.
Conclusion
From the evidence, the clearest conclusion that can be drawn is that a range of pressure‐relieving mattresses and overlays in the prevention of pressure ulcers can outperform the standard hospital mattress. It can be applied to any health care settings. The reviewed studies have shown that pressure‐relieving mattresses are effective on at risk patients, especially they are in advanced age with low mobility. Therefore, this evidence-based guidelines will serve in the medical rehabilitation wards to reduce the number of elderly from developing pressure ulcer after using the pressure‐relieving supporting surfaces.published_or_final_version
Nursing Studies
Master
Master of Nursing
7
So, Pik-chu, and 蘇碧珠. "Preventing pressure ulcer in hospital : a systematic review on pressure relieving devices application in risk patient group." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2013. http://hdl.handle.net/10722/193811.
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Background
Pressure ulcer is one of many health problems in the healthcare system. Pressure ulcer prolongs the suffering of patients and the cost of treating them is high. In 2006, in the USA almost US$11 billion was spent on hospitalizations in which the patient was dignosed with pressure ulcer as primary or secondary causes, excluding neonatal and maternal conditions. This reflects an increase of nearly 80% since 1993. Most pressure ulcers are potentially preventable; early and proper intervention to high risk groups can decrease the incidence of newly developed pressure ulcer and its consequence impacts. Moreover, pressure ulcer is a key performance index for assessing the quality of hospital service and patient safety. Maintaining a low incidence and prevalence of the pressure ulcer leads to both reduced health expenditure and patient’s suffering from wound pain.
Aims and objectives
The paper aims to study the current literature of pressure relieving devices application and its effectiveness to risk group. There are lots of pressure relieving devices in the market and here to assess its effectiveness to the risk group in hospital.
Methods
The electronic search was done through searching of electronic database, PubMed, MEDLINE ProQest; and hand search through Google Scholar and other online resources. Search strategies and criteria for inclusion and exclusion had been applied.
The key words were used in retrieving studies through databases:
(pressure ulcer OR decubitus ulcer) AND(prevention) AND
(pressure relieving OR repositioning OR mattress OR cushion OR overlay OR re-distributing)
Results
There were twelve English articles for reviewing finally. Those articles were grouped into three pressure relieving device categories; they are cushion, re-positioning and mattresses for the review. In Defloor 2005, it found an obvious reduction in newly developed pressure ulcer if it combines4-hourly turning with pressure reliefing mattress; only 3% of participants had newly developed pressure ulcer. Furthermore, the frequect turning may not reduce the pressure ulcer development in lower risk group. The proper intervention of pressure relieving and tailor to individuals are essential.
Conclusions
It demonstrated the effectiveness of pressure relieving devices to patient at risk, but the present of significant differences is not consistent. It is essential to ensure the utilization of the pressure relieving support surfaces function with right skill to the right person in order to maximize patient’s benefit during hospitalization. Further clinical trial is preferable.published_or_final_version
Public Health
Master
Master of Public Health
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Maylor, Miles. "Controlling the pressure : an investigation of knowledge, locus of control, and value of pressure sore prevention in relation to prevalence." Thesis, University of South Wales, 1999. https://pure.southwales.ac.uk/en/studentthesis/controlling-the-pressure(78ce96f2-71ab-4fbb-b8de-3585dbd08826).html.
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This is a quantitative and correlational analysis of how staff perceptions of locus of control of pressure sore prevention relate to knowledge and prevalence rates of pressure sores. Reference is made to value of pressure sore prevention. The survey population consisted of nursing and assistant nursing staff in both hospital and community settings of a rural Health Service Trust. Surveys were performed of: prevalence of sores; equipment for pressure relief; knowledge and opinions of aetiology, recommended use of equipment, and risk assessment. A scale was constucted to measure locus of control of life, health, and pressure sore prevention. The hypothesis that higher belief in personal control of pressure sore prevention would be correlated with higher knowledge of the subject, and lower prevalence rates, was not upheld. It is concluded that there are associations between prevalence, knowledge levels, value of pressure sore prevention, and locus of control. Significant differences exist between community and hospital staff, and between trained and support staff. Spearman correlations and Mann-Whitney tests were mainly used. Knowledge and equipment levels were considered satisfactory for adequate preventive measures to be taken. Key personnel, such as Sisters, were significantly associated with prevalence, in that the more they believed they controlled pressure sore prevention, the higher the prevalence rate. This has been explained using typology in terms of the priority and importance they attach to pressure sore prevention relative to other demands. Higher belief that fate controls pressure sore prevention also correlates with lower prevalence rates, perhaps because more effort is invested in trying to stave off the presumed inevitable. Domain-specific beliefs may be less important to prevention than generalized beliefs about control. Recommendations include the following: that methodology is replicated and refined; that the value of pressure sore prevention needs raising; that organisational lines of control need to be clear. Certain types of attitudes amongst staff may be unhelpful in a broader range of conditions and outcomes. Selection processes for nurses should take attitudes and beliefs into account, and there may be an need to change control expectations of groups of personnel.
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Willock, Jane Harrington. "The development and initial validity/reliability testing of the Glamorgan paediatric pressure ulcer risk assessment scale." Thesis, University of South Wales, 2012. https://pure.southwales.ac.uk/en/studentthesis/the-development-and-initial-validity--reliability-testing-of-the-glamorgan-paediatric-pressure-ulcer-risk-assessment-scale(e6c378d1-fc80-43f6-ad3c-4adee106b3fc).html.
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Although pressure ulcers appear to occur infrequently in children, they can have serious consequences such as infection, scarring and changes to body image. This thesis is an account of the development of an instrument to help nurses to identify children most at risk of pressure ulcers, and take preventative action. Prior to 1996, there were very few publications on the problem of pressure ulcers in children; these were mainly anecdotal, or concerned with specialised populations. The main aim of the research presented in this thesis was to develop an evidence-based pressure ulcer risk assessment tool for children. Initially, paediatric pressure ulcer incidence and prevalence studies were carried out at one children's hospital (project 1). This included collecting detailed data on the characteristics of children. The incidence of pressure ulcers in the sample (not including non-blanching erythema) was 3.7%, and the prevalence was 2.2%. A multicentre study was carried out (project 2) in which detailed data of the characteristics of 54 children with pressure ulcers in 11 hospitals were collected. This data set was amalgamated with the data set from project 1. Analysis indicated that the most significant characteristics associated with pressure ulcers were mobility, devices in contact with the skin, anaemia, pyrexia, peripheral perfusion, inadequate nutrition, hypoalbuminaemia, low weight and inappropriate incontinence. These factors were used to develop a pressure ulcer risk assessment (the Glamorgan Scale). An inter-rater agreement study (project 3) was carried out on the Glamorgan scale by collecting 27 sets of paired data. The Glamorgan scale is the first published paediatric pressure ulcer risk assessment scale developed from patient data using statistical analysis. It is being used in paediatric areas in many countries throughout the world, it has been translated into four other languages, and incorporated into paediatric pressure ulcer prevention policies in at least 6 countries.
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Samuriwo, Raymond K. "The impact of nurses' values on the prevention of pressure ulcers : a Straussian grounded theory study." Thesis, University of South Wales, 2011. https://pure.southwales.ac.uk/en/studentthesis/the-impact-of-nurses-values-on-the-prevention-of-pressure-ulcers(beace6f8-5e69-4b69-adf7-9f4a0bf1c21a).html.
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This is a Straussian grounded theory study about the impact of nurses’ values on pressure ulcer prevention. Semi-structured interviews were used to gather data from participants (n=16) who were recruited from the non-acute adult medical wards of 14 hospitals in one NHS Trust and a local university. The participants were asked to talk about their experiences of preventing and managing pressure ulcers and their values were elicited from their accounts. The data were analysed and interpreted with Straussian grounded theory. Nurses were found to work according to the value that they placed on pressure ulcer prevention, as this value influenced the manner in which they prioritised and delivered skin care to their patients. Similar links between nurses’ values and their delivery of care with regards to other aspects of nursing were also identified. The delivery of care to prevent pressure ulcers was found to be subject to clinical priorities and other factors. As a result, the majority of care to maintain skin integrity was delivered by nursing auxiliaries and students because nurses were busy doing other things. Despite this, nurses who place a high value on pressure ulcer prevention appear to be more proactive and determined to deliver care that protects the integrity of their patients’ skin than their peers. This is highlighted by the participants’ accounts of how their prioritisation and delivery of care to prevent pressure ulcers changed when the value that they placed on pressure ulcer prevention increased from low to high. This study also identified the manner in which the value that nurses place on pressure ulcer prevention is formed and evolves. The recommendations that arise from this study are: further testing of this grounded theory in other settings to increase its generalisability and a greater awareness of the impact that the value that nurses place on different aspects of patient care has on their delivery of care to patients, especially with regards to pressure ulcer prevention. Nurse education and training must also take into account some of the factors that help to form and change the value that nurses place on pressure ulcer prevention. Greater attention needs to be paid to the value that nurses place on different aspects of nursing in view of the relationship between nurses’ values and care delivery, if patients are to receive the best possible care.
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Dixit, Bhanumathi (Bonnie). "A temperature monitoring cushion for preventing the formation of ischial decubitus ulcers." Thesis, Georgia Institute of Technology, 1988. http://hdl.handle.net/1853/14928.
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Wong, Siu-ling, and 黃少玲. "Evidence-based clinical guidelines for pressure ulcer prevention in elderly patients." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2012. http://hub.hku.hk/bib/B48339337.
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Older adults are particularly vulnerable to the development of pressure ulcers (PUs) as a result of skin changes and reduced mobility (Knox, Anderson & Anderson, 1994; Russell et al., 2003). This is associated with diminished quality of life, longer hospitalisations and increased morbidity and mortality (Margolis et al., 2002).In view of the high incidence of PUs (grade 1-4) occurring in elderly patients in acute care, a systematic review of related studies was conducted in August 2011. The optimal frequency and methods of repositioning are described in the literature. With well-designed implementation and evaluation plans, the proposed repositioning guidelines are likely to reduce the incidence of PUs (grade 1-4), while in turn lessening the healthcare burden and preserving patients’ quality of life.
Pilot testing, a trial run to test the feasibility of the innovation, will be carried out in the proposed medical ward, and training provided to all staff before the intervention. To proceed with the change, the intervention must be cost-effective and beneficial to all stakeholders. Outcome evaluation determines the number of goals achieved by the innovation and to what degree, and is very important (Melnyk & Fineout-Overholt, 2005).The PU incidence (grade 1-4) is expected to be different after the implementation of the innovation.published_or_final_version
Nursing Studies
Master
Master of Nursing
13
Tang, Kwan-yi Emily. "Nutritional status of hospitalized geriatrics and the effects of branched-chain amino acids supplementation on pressure sore healing /." Hong Kong : University of Hong Kong, 2000. http://sunzi.lib.hku.hk/hkuto/record.jsp?B21981723.
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Baxter, Susan. "An examination of how nurses use the Waterlow Scale for judgement and decision making in continuing care." Thesis, University of Stirling, 2005. http://hdl.handle.net/1893/17092.
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Using an information processing approach, this study examines how nurses working in the area of continuing care for older people in Scotland use the Waterlow scale to inform their judgement and decision making in risk of pressure ulcers and plan of care. While assessment tools are commonly used, a number of assumptions surround their use for nurse practice and for patient care. To date, there appears to be no research which actually examines how nurses use assessment tools to assess patient's needs and plan care, despite the emphasis placed on evidence based practice. Assessment is a fundamental activity when caring for an older person where multipathology and the potential for health state deterioration are likely. This study consists of 3 parts. Part 1 identified the number and type of assessment tools that are routinely used within continuing care settings using a postal survey, revealing that the Waterlow scale is the most routinely used tool to assess pressure ulcer risk. Part 2 examined how continuing care nurses assess pressure ulcer risk through the use of observation and interview. Part 3 involved a detailed examination of the cognitive processes used by nurses when assessing pressure ulcer risk and planning care using simulation and a technique known as `Think aloud'. The results of this study indicate there were no differences between continuing care nurses working in either hospital wards or nursing homes in how the assessment was carried out, as neither group based their assessment or plan of care solely on the Waterlow scale. However, the Waterlow scale was found to be used differently according to the nurses' experience with those with more than 2 years experience, less likely to base their assessment of pressure ulcer risk or plan of care on Waterlow derived information.
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Silva, Camila Polo Camargo da [UNESP]. "Construção de um software para avaliação do risco de úlcera por pressão em Unidade Terapia Intensiva." Universidade Estadual Paulista (UNESP), 2013. http://hdl.handle.net/11449/96477.
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000736002.pdf: 1950815 bytes, checksum: 5f1c58a562d75c8f2a8c6f06f42d7580 (MD5)Pacientes sob cuidados intensivos têm geralmente alto risco para o desenvolvimento de úlcera por pressão (UP), isto devido às condições clínicas e aos fatores extrínsecos que estão expostos até sua reabilitação. Dentre o rol de indicadores de qualidade em unidade de terapia intensiva (UTI), a UP é um dos indicadores pertinente que reflete a qualidade assistencial da unidade. Este estudo teve como objetivos desenvolver um software para identificar os fatores de risco associados à UP, testar o software e descrever suas etapas de desenvolvimento. Tratou-se de um estudo descritivo do desenvolvimento do software. Foi adotado o modelo waterfall para o desenvolvimento do software, obedeceu-se os requisitos de confidencialidade, integridade e disponibilidade dos dados. O teste piloto foi realizado na UTI Central, do Serviço de Terapia Intensiva (SETI) do Hospital das Clínicas da UNESP de Botucatu no período de janeiro a abril de 2012, por meio da transcrição de dados já coletados na unidade. O desenvolvimento resultou num protótipo para a coleta do risco, catalogação da úlcera por pressão (UP), e auxilio na tomada de decisão em relação às condutas assistenciais e gerenciais para UP. Foi possível evidenciar que a comunicação, assim como no processo de enfermagem foi essencial na etapa de desenvolvimento do software. Através da usabilidade foi observado que software permite extrair dados pertinentes ao processo assistencial e também gerencial, podendo ser disponibilizado e/ou consultado em tempo real e impressos quando necessário
Patients under intensive care are usually at high risk of developing pressure ulcers (PU) due to clinical conditions and extrinsic factors which they are exposed to until their rehabilitation. Among the quality indicators in intensive care units (ICU), PU is a relevant one which reflects the quality of care in the unit. This descriptive study aimed at developing some software in order to identify the risk factors associated with PU, testing the software, and describing its development steps. The waterfall model was used to develop the software according to the confidentiality and integrity requirements and data availability. The pilot test was carried out in the Central Intensive Care Unity of the Intensive Therapy Service (SETI) of UNESP Botucatu Medical School Hospital from January to April 2012 by transcribing the data that had already been collected in such unity. The outcome of the software development was a prototype for collecting the risk, cataloguing pressure ulcers, and aiding in decision taking regarding the care and management for PU. It should be highlighted that both the communication and the nursing process were crucial in the software development. By using it, one can notice that the software allows accessing relevant data to the care and management processes, which can be made available and/or searched in real time and printed whenever necessary
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Tang, Kwan-yi Emily, and 鄧君儀. "Nutritional status of hospitalized geriatrics and the effects of branched-chain amino acids supplementation on pressure sore healing." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2000. http://hub.hku.hk/bib/B31223461.
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Silva, Camila Polo Camargo da. "Construção de um software para avaliação do risco de úlcera por pressão em Unidade Terapia Intensiva /." Botucatu, 2013. http://hdl.handle.net/11449/96477.
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Orientador: José Eduardo CorrenteCoorientador: Magda Cristina Queiroz Dell'Acqua
Banca: Denize Zornoff
Banca: Maria Irene Bachega
Resumo: Pacientes sob cuidados intensivos têm geralmente alto risco para o desenvolvimento de úlcera por pressão (UP), isto devido às condições clínicas e aos fatores extrínsecos que estão expostos até sua reabilitação. Dentre o rol de indicadores de qualidade em unidade de terapia intensiva (UTI), a UP é um dos indicadores pertinente que reflete a qualidade assistencial da unidade. Este estudo teve como objetivos desenvolver um software para identificar os fatores de risco associados à UP, testar o software e descrever suas etapas de desenvolvimento. Tratou-se de um estudo descritivo do desenvolvimento do software. Foi adotado o modelo waterfall para o desenvolvimento do software, obedeceu-se os requisitos de confidencialidade, integridade e disponibilidade dos dados. O teste piloto foi realizado na UTI Central, do Serviço de Terapia Intensiva (SETI) do Hospital das Clínicas da UNESP de Botucatu no período de janeiro a abril de 2012, por meio da transcrição de dados já coletados na unidade. O desenvolvimento resultou num protótipo para a coleta do risco, catalogação da úlcera por pressão (UP), e auxilio na tomada de decisão em relação às condutas assistenciais e gerenciais para UP. Foi possível evidenciar que a comunicação, assim como no processo de enfermagem foi essencial na etapa de desenvolvimento do software. Através da usabilidade foi observado que software permite extrair dados pertinentes ao processo assistencial e também gerencial, podendo ser disponibilizado e/ou consultado em tempo real e impressos quando necessário
Abstract: Patients under intensive care are usually at high risk of developing pressure ulcers (PU) due to clinical conditions and extrinsic factors which they are exposed to until their rehabilitation. Among the quality indicators in intensive care units (ICU), PU is a relevant one which reflects the quality of care in the unit. This descriptive study aimed at developing some software in order to identify the risk factors associated with PU, testing the software, and describing its development steps. The waterfall model was used to develop the software according to the confidentiality and integrity requirements and data availability. The pilot test was carried out in the Central Intensive Care Unity of the Intensive Therapy Service (SETI) of UNESP Botucatu Medical School Hospital from January to April 2012 by transcribing the data that had already been collected in such unity. The outcome of the software development was a prototype for collecting the risk, cataloguing pressure ulcers, and aiding in decision taking regarding the care and management for PU. It should be highlighted that both the communication and the nursing process were crucial in the software development. By using it, one can notice that the software allows accessing relevant data to the care and management processes, which can be made available and/or searched in real time and printed whenever necessary
Mestre
18
Billington, Alicia. "Applying Modeled Hemi-Ellipsoids to the Study of Pressure Distribution in Normal and Paraplegic Seated Subjects." Scholar Commons, 2014. https://scholarcommons.usf.edu/etd/5183.
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The three goals of this research were to investigate how normal subjects move while seated, how paraplegic patients move while seated, and whether seated movements can be modeled using a hemi-ellipsoid shape. Pressure readings were recorded at 11 Hz using a 36 by 36 sensor pressure map by XSENSOR. Subjects were instructed to move or perform pressure relief as they normally would while seated. Analysis was performed using Microsoft Excel with Solver and Matrix.xla add-ins and automated with VBA code. Major movements and time intervals between movements were calculated by locating the area of maximum pressure on each hemi-buttock for 20 normal and 6 paraplegic subjects. Statistical analysis revealed movements followed a normal distribution while time intervals followed a lognormal distribution. For both the normal (p=0.041) and paraplegic groups (p=0.007) the number of movements significantly increased from the first hour of recording to the second hour. The time interval between major movements decreased but not significantly for neither the normal subjects nor the paraplegics. No significant differences were identified between the normal and paraplegic groups over the first hour or second hour for number of movements or time intervals. Time series analysis with plotting, trend lines, ARIMA, and periodograms did not reveal patterns in the data. Preference for a side was shown. Next, all areas of identified major movements for one subject and one frame for each of the paraplegic patients were modeled as a hemi-ellispoid shape using minimization with Solver. Eigenvalues were calculated in order to obtain the lengths of the x, y, and z axis of the hemi-ellipsoid with an average error of 39.87% for the normal subject and an error range of 5.10% to 2701.81% for the paraplegic patients.
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Tran, Manh Trung. "Développement de capteurs nanocomposites quantiques résistifs pour la prévention des escarres." Thesis, Lorient, 2018. http://www.theses.fr/2018LORIS514.
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Les escarres ou les plaies cutanées chroniques (en général) ont été qualifiées d‘ « épidémie silencieuse » et constituent une menace pour la santé publique et l'économie. Cependant, les méthodes de surveillance actuelles restent extrêmement coûteuses, et se limitent souvent au suivi d’un paramètre (pression verticale, pH ou au niveau d'humidité). Par conséquent, la volonté de mettre en œuvre des mesures préventives par une autre technique peu coûteuse, portable et capable de surveiller plusieurs facteurs de risque, en particulier à un stade précoce, est à l'origine recherche. S'inspirant de nos recherches précédentes sur les capteurs nanocomposites polymères cette thèse a été initiée par le professeur Jean-François Feller dans le but de développer un système Quantum Resistive Sensor (QRS) pour anticiper les escarres, en particulier pour les patients handicapés, et selon deux stratégies: (i) l’analyse des biomarqueurs d’escarres par des capteurs de vapeurs résistives quantiques (vQRS) et (ii) la surveillance des pressions sur la peau par des capteurs de pression résistive quantique (pQRS). Dans la première approche, un nez électronique (e-nose) composé de neuf capteurs différents a été fabriqué pour analyser des mélanges synthétiques comprenant trois biomarqueurs (alcool benzylique, tétradécène et pentadécane) et de l’eau. Ensuite, des échantillons réels prélevés sur peau saine, et peau avec lésions ont été analysé par le nez électronique. Pour la seconde approche, les nanocomposites hybrides TPU / pG2% / CNT4%, utilisés comme capteurs de pression, ont permis la conception d’un réseau de 4 puis 16 capteurs et démontré la faisabilité du suivi de pression en temps réel. De nos jours, les dispositifs de santé portables sont souhaités pour fournir des soins et des informations plus pertinentes. Par conséquent, une interface homme-machine (IHM) basée sur une carte PI Raspberry avec écran tactile et connexion bluetooth, a été développée avec succès pour suivre efficacement les forces appliquées en temps réelBedsores or chronic skin wounds (in general) have been called ‘a silent epidemic’ posing a significant threat to public health and the economy. However, the current wounds monitoring managements are not only extremely expensive and not mobile but often limited to a single factor monitoring such as vertical pressure, pH or moisture level. Therefore, the willing to implement preventative measurements by another technique which is low-cost, portable and able to monitor several risk factors of bedsores, especially at its early-stage, is the origin of this research. Undertaking an inspiration from our previous research on the development of polymer nanocomposite-based sensors, this thesis was initiated by Prof. Jean-François Feller with the objective to the development of Quantum Resistive Sensors (QRS) for the anticipate detection of bedsores (especially for disable patients who are not capable to move their body by their own self). This has been performed following two strategies: (i) analysis of emited from skin volatile organic compounds (biomarkers) from bedsores by quantum resistive vapour sensors (vQRS) and (ii) pressure monitoring by a quantum resistive pressure sensor (pQRS). On the first approach, a electronic nose (E-nose) composed of nine quantum resistive vapour sensors (vQRS) was fabricated to analyse synthetic blends including three bedsores biomarkers (benzyl alcohol, tetradecene and pentadecane) and water. Then, a set of real samples (healthy skin taken from the healthy volunteer’s skin, background and two bedsores samples collected from the bedsores patients’ skin) was successfully collected and analysed by our current E-nose. On the second approach, hybrid TPU/pG2%/CNT4% nanocomposites were assembled into a 4 then 16 sensors array to prove feasibility to monitor applied forces in real time. Nowadays, wearable health devices are required to better monitor health status and provide more data to clinicians with a potential for earlier diagnostic and guidance of treatment. Therefore, a Human Machine Interface (HMI) based on a Raspberry PI Card with a touch screen and Bluetooth connection has been successfully developed to effectively follow applied forces in real time
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Sperandio, Junior Carlos Augusto. "Úlcera por pressão em idosos institucionalizados: um guia para cuidadores." Universidade Tecnológica Federal do Paraná, 2014. http://repositorio.utfpr.edu.br/jspui/handle/1/1421.
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Úlceras por Pressão (UPP) são áreas de necrose isquêmica em partes moles, causadas por uma pressão prolongada maior que a capilar, com ou sem cisalhamento, relacionada à postura e frequentemente localizada junto a uma proeminência óssea em indivíduos com predisposição clínica. Os fatores extrínsecos pressão, fricção, cisalhamento, umidade e alterações de temperatura são relacionados à engenharia biomédica e decorrem da interação do paciente com a superfície de suporte. Já os intrínsecos, notadamente relacionados às condições de saúde, envolvem o desequilíbrio nutricional e as afecções clínicas, tanto as que diminuem a oxigenação tecidual, como as que implicam no comprometimento da mobilidade. Por ser mais prevalente entre os idosos e por decorrer de múltiplas causas e mecanismos patogênicos, as UPP são classificadas como uma Síndrome Geriátrica. Embora associada principalmente a gerontes, o aporte financeiro empregado no grupo de feridas crônicas, como as UPP, remonta o 3o maior bloco de gastos em saúde no mundo. As UPP são frequentes em pacientes hospitalizados, porém ultrapassam este ambiente, havendo expressiva incidência em residentes de Instituições de Longa Permanência para Idosos (ILPIs). No Brasil, as ILPIs são órgãos sociais, o que gera uma lacuna legal quanto à responsabilidade clínica sobre seus residentes e, consequentemente, sobre as afecções que os acometem, particularmente as UPP. Estas feridas são passíveis de prevenção, destacando-se então o cuidador de idosos, ocupação que vem aumentando em número e importância com o envelhecimento da população e que, no entanto, nem sempre é devidamente instruído. Por meio de uma vasta revisão de literatura, esta dissertação objetivou pontuar os fatores relevantes envolvidos na patogenia das UPP, além das especificidades do indivíduo idoso e do ambiente das ILPIs. Neste contexto, o produto final elaborado foi um guia para prevenção de UPP em ILPIs.Pressure Ulcers (PU) are areas of localized soft tissue ischemic necrosis caused by prolonged pressure higher than the capillary pressure with or without shear, related to posture which usually occurs over a bony prominence in individual with certain clinical susceptibilities. Extrinsic factors – such as pressure, friction and shear, moisture and temperature changes – are related to biomedical engineering and come from the interaction patient-surface. On the other hand, intrinsic factors are related to health conditions and correspond to nutritional imbalance and/or conditions that decrease tissue oxygenation or impair mobility. Since it features different pathogenic mechanisms and it is more prevalent among the elderly, the PU group is classified as a geriatric syndrome. Worldwide, PU are estimated to be the 3rd largest consumer of resources, plus the social burden and consequences of this condition. PU are quite common in hospitals, however there are several cases among the elderly living in Long-Term Care Facilities (LTCFs). In Brazil, these institutions are supported by social organizations, what produces legal gaps with respect to the residents’ clinical responsibility, and reduces the chances of preventing avoidable diseases as PU. The number of elderly caregivers tends to grow accordingly to the population ageing, creating a window of opportunity for continued education of this group of workers. Through an extensive literature review, this thesis aimed to highlight the relevant findings of the different factors involved in PU pathogenesis as well as to ascertain the particularities of elderly individuals and the specific environment of LTCFs. The final product is a PU prevention guide suitable to use in Brazilian long-term care facilities.
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Garcia, Cédric. "Elaboration d'un dispositif médical contenant une association d'actifs naturels innovants dans le but de prévenir l'escarre." Thesis, Aix-Marseille, 2016. http://www.theses.fr/2016AIXM5501.
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Dans le cadre d’une hospitalisation, l’escarre est un souci majeur aussi bien pour le confort des patients que d’un point de vue économique. Le vieillissement de la population confronte de plus en plus le personnel soignant à la prévention et au traitement des escarres. La prophylaxie n’en est donc que plus essentielle dans les milieux hospitaliers. Force est de constater qu’il existe en la matière peu de produits spécialisés dont l’efficacité a été éprouvée. En partenariat avec le laboratoire RIVADIS, nous avons donc voulu élaborer un système galénique contenant une association d’actifs naturels innovants afin de prévenir l’escarre. Un état de l’art complet a été effectué sur la thématique des escarres afin d’en comprendre tous les facteurs de risques. Par la suite, une recherche approfondie a permis de sélectionner les plantes et molécules pouvant être utilisées comme actifs dans la prévention et/ou le traitement de cette pathologie. Notre attention s’est particulièrement attardée sur le pouvoir anti-inflammatoire, cicatrisant, antioxydant et anti-adhésion bactérienne de ces actifs. Les deux meilleurs actifs obtenus sont la pectine de pomme et l’extrait sec de Centella asiatica L., dont les résultats se sont avérés significatifs sur au moins trois propriétés recherchées. L’étude des effets combinés de ses deux actifs a même montré une synergie sur le pouvoir anti-adhésion bactérienne. Ils ont alors été incorporés sous forme galénique, de façon à rendre possible la réalisation d’un effleurage aussi facile que celui permis par les huiles déjà présentes sur le marché tout en autorisant l’incorporation d’actifs hydrophilesIn the case of a hospitalization, bedsores are a major issue regarding the comfort of the patient as well as economical reasons. Due to the aging population, the nurses are more and more confronted to prevention and treatment of bedsores. Thus, prevention is now considered as essential in hospitals. It must be noted that in matter of bedsores, there exist only a few specialized products which efficiency has been proved. Therefore, in association with RIVADIS Laboratory, we planed to work on a galenic formulation which contains a combination of innovative natural active. A complete compilation of specialized publications on this topic has been realized in order to fully understand all the risk factors. Then, thanks to an extensive research, we identified the plants and molecules that could be used as actives for the prevention and/or treatment of this pathology. We focused on their anti-inflammatory, healing, antioxidant and bacterial anti-adhesive properties. The two best actives thus obtained are apple pectin and dry Centella asiatica L. extract, they present significant results on at least three of the four wanted properties. Studying the combined effects of these two actives even showed a synergy on bacterial anti-adhesive property. They have then been incorporated in a galenic formulation that makes the massage as easy as the one allowed by already commercialised oils and enables the incorporation of hydrophilic actives
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Maiers, Patricia Jean. "Treatment of pressure sores a research report submitted in partial fulfillment ... Master of Science (Medical-Surgical Nursing) /." 1990. http://catalog.hathitrust.org/api/volumes/oclc/68795211.html.
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Pulskamp, Sara E. "Pre-operative pressure ulcer risk assessment a retrospective study /." 2007. http://proquest.umi.com/pqdweb?did=1414126921&sid=2&Fmt=2&clientId=42585&RQT=309&VName=PQD.
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Thesis (M.A.)--Northern Kentucky University, 2007.Made available through ProQuest. Publication number: AAT 1447084. ProQuest document ID: 1414126921. Includes bibliographical references (p. 36-37)
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Laryea, Elsie A. "An Online Mixed-Methods Study Assessing Nurses’ Training, Attitudes, Knowledge, Skill/Ability, and Perceived Barriers With Regard to Adherence to the National Pressure Ulcer Advisory Panel’s Clinical Practice Guidelines." Thesis, 2019. https://doi.org/10.7916/d8-d6ms-dv37.
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The problem this study addresses is the need for nurses to adhere to guidelines on pressure ulcer prevention and treatment, so patients best possible health outcomes. This study created and utilized a new tool to assess nurses’ training, attitudes, knowledge, and skill/ability for adhering to practice guidelines of the National Pressure Ulcer Advisory Panel. The study sought to identity significant predictors of Personal Knowledge Rating Scale (TPKRS-101) and Personal Skill/Ability Rating Scale (TPS/ARS-101). The online study’s convenience sample of nurses (n=190) was 80.5% (n=153) female, 59.5% (n=113) Black, and 18.4% (n=35) Asian—with mean age of 40.27 years (min 23, max 73, SD=10.95). Some 53.2% (n=101) were not born in the US, while 16.8% (n=32) were from Ghana, 7.9% (n=15) from Jamaica, and 7.4% (n=14) from Philippines. Annual household income mean was $50,000 to $99,999 (mean=4.43, category 4, min=2, max=10, SD=1.00). Mean years working in nursing was 8-10 years (mean=4.34, category 4, min=1, max=9, SD=2.14).
Nurses rated themselves “good” for performing pressure ulcer care tasks, as follows: (a) Nursing Training Rating Scale (TNRS-101) with global mean of 4.11 (SD=0.60, min= 1.94, max=5.00), or good; (b) Personal Knowledge Rating Scale (TPKRS-101) with global mean of 4.15 (SD=0.57, min=2.79, max=5.00), or good; and, (c) Personal Skill/Ability Rating Scale (TPS/ARS-101) with global mean of 4.13 (SD=0.62, min=2.56, max=5.00), or good.
Higher Personal Knowledge Rating Scale (TPKRS-101) scores were significantly predicted by: more positive Attitudes Regarding Practice Guidelines-Relevance Scale (ARPG-R-5) (b = .067, SEB = .029, p = .022); and, higher level of Social Desirability (13 items) (b = .030, SEB = .013, p =.023). For this regression model, R2=.063, and AdjR2=.053, meaning that 5.3% of the variance was explained by model.
Personal Skill/Ability Rating Scale (TPS/ARS-101) scores were significantly predicted by: higher level of Social Desirability (13 items) (b = .051, SEB = .014, p = .000). For this regression model, R2=.064, and AdjR2=.059, meaning that 5.9% of the variance was explained by model.
Finally, the quantitative data were augmented by qualitative findings for barriers nurses experience to pressure ulcer prevention and treatment, as follows: Category I-External Barriers; and, Category II-Internal Barriers.
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Gyawali, Selina. "Investigation of intermittent electrical stimulation as a potential prophylaxis against the formation of deep pressure ulcers after spinal cord injury." Master's thesis, 2009. http://hdl.handle.net/10048/788.
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Thesis (M.Sc.)--University of Alberta, 2009.A thesis submitted to the Faculty of Graduate Studies and Research in partial fulfillment of the requirements for the degree of Master of Science, Centre for Neuroscience. Title from pdf file main screen (viewed on November 8, 2009). Includes bibliographical references.
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Huang, Chi–Che, and 黃啟哲. "Application of QFD and TRIZon anti-bedsore facilities." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/03265774808797074967.
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碩士國立臺灣大學
機械工程學研究所
95
ABSTRACT This research applies Quality Function Deployment (QFD) theorem and Theory of Inventive Problems Solving (TRIZ) on anti-bedsore facility for use on bedridden patients suffering from acute or chronic disease. To design a better facility to prevent patients from bedsore, instead of regular labor care to turn body over. Firstly, to understand the root causes of bedsore and know about the shortcomings existed on current methods, theories or instruments available to avoid bedsore. We list patient’s requirements on anti-bedsore instrument, converting those requirements into engineering characteristics and give each a weight. Then utilize Function mechanism Deployment to analyze the mechanism demands of design requirement on anti-bedsore instrument. Through systematically QFD process, we realize the function requirements, mechanical composition and technique that need to be improved on anti-bedsore instrument. Then apply TRIZ to define the points on anti-bedsore, perform ideality analysis and find useful resources. After doing Substance-Field Analysis and analyzed by Table of Contradictions, TRIZ 40-principle and single characteristic principle are good to find solutions on improving anti-bedsore design. Afterwards, by searching patent database of different countries, we find some examples for further discussions on how those theorems applied on anti-bedsore instrument’s design concept.
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Chen, Guei-Heng, and 陳貴恒. "Application of Intelligent Control on Anti-Bedsore Air Bed." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/61517344762234566769.
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碩士元智大學
電機工程學系
104
There are many reasons for being unable to turn over independently, in addition to severe cases and paralysis patients, the number of older people accounts for the vast majority. However, it is easy for the patients lying for long time to get metabolic disruption since the skin suffers prolonged pressure, making tissue damage or necrosis; this situation is called pressure sores, commonly known as bedsore. Once bedsore occurs, a slight one will delay several weeks to heal the wound, while a severe one affects severe blood poisoning, amputation, or death and the scope of influencing organization is even deep to subcutaneous tissue, muscle and bone. It not only damages the health, but leads to burden and waste on medical treatment. Medical equipment of preventing pressure sores is numerous, and alternating air bed accounts for the largest portion, because of convenient carrying and customer-friendly price and it can be used at hospitals, sanatorium and home. But the function of most air bed is still manual adjustment, since the number of nursing staff in sanatorium, and hospitals cannot keep balance with the number of patients, busyness of nursing staff and unfamiliar operation on instrument often fail to meet required status for the patients and make decompression effect double the work. This paper will be develop an intelligent control system for the anti-bedsire air bed. Firstly, we utilize the gasbag to inflate and deflate air, measure pressure, seconds and other relevant parameters, in order to detect the patient weight and adjust the hardness of the gasbag according to the patient weight. The skin temperature and humidity is also one of the main causes of bedsore,so this paper also makes use of fuzzy control, considering different indoor temperature and humidity, to automatically adjust the cycle time of gasbag and turning over.
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Lo, Yih-Liang, and 羅億良. "A Investigation of Low Limbs Bedsore with Temperature Difference of Thermal Image." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/10689644611972211643.
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碩士中原大學
醫學工程研究所
95
The Lower Limbs Ulcer is often happened to the low limbs and paralyzed patient of four limbs resulted from the forming factor of pressure, temperature, shearing stress, moisture and nutrition etc.. Using visual and skin contacts to subjective diagnosis is the traditional estimate method; but its diagnosis is inaccuracy occasionally. This research purpose is to utilize the thermal imaging, examines the skin and tissue the variation tendency with difference temperature while receiving some pressure, discuss with pressure, time and dependence that body surface temperature change, offer and diagnose it with the therapeutic basis, estimate the important indicator which pressure sore grade. Compare according to document data, estimate the thermal imaging system could is it diagnose for clinic low limbs ulcer. This research investigates the influence situation of temperature to pressure sore using SPECTRUM9000MB-500 thermal imaging system and Vista Medical FSA UT1010 pressure system to gather the low limbs image of 15 normal persons at random at different pressure. The left low limbs are set up for the experiment group, with invariable contact interface pressure 40-90 mmHg, exert pressure for 20-60 minutes continuously, exert and test in the position in the middle of the left low limbs equally, the right low limbs are set up for the control group. Estimates the temperature distributions and standard deviations of six zones including upper, middle, lower of two lower limbs with the characteristic of thermal imaging. The experimental results are shown that the blood vessel of lower limbs loading pressure cause larger temperature difference of body surface and this temperature difference is below 2.5℃ at lower 100 mmHg and short time. The temperature difference distributions and standard deviations are more and more large as lower limbs loading heavy or long resulting in some blood vessel twist or distortion. The temperature difference is over 4℃ at the continuing situation of 40mmHg and above 300 minutes. Control the low limbs to measure correct degree and analysis for 0.92 meanings of diagnosing through ROC curve. At last, the experimental and thermal image analyzing methods can be the diagnosis auxiliary tool rapidly for paralysis patient and low limbs ulcer in this paper.
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Hsiao, Yung-Chin, and 蕭詠秦. "Studies of Indocyanine Green and Radio Frequency Photodynamic System to Inactivate Bacteria Isolated From Bedsore Wound." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/34617622407273046775.
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碩士中原大學
生物醫學工程研究所
101
Bedsore is usually developed in bedridden patients due to tissue ischemic necrosis after persistent unrelieved pressure over bony prominences. It can be fatal to elderly and disabled patients. Bedsore is difficult to treat due to wound infection and the development of drug resistant bacteria. This study proposed the radio-frequency (RF)-mediated photodynamic therapy (PDT) to inactivate bacteria isolated from the wound. The RF lighting system may have potential for clinical practices. The bacteria killing mechanism of PDT is different from antibiotics and thus can reduce the opportunity of drug resistance. We used two bacterial strains which are common pathogens on bedsores: oxacillin-resistant Staphylococcus aureus (ORSA) and oxacillin-susceptible Staphylococcus aureus (OSSA). Indocyanine green (ICG) was used as photosensitizer. The system consists of LED light source which emits 770±5 nm wavelength of light; the absorption peak of ICG was confirmed with a spectroscope. The irradiance was 20 mW/cm2. The results showed that the RF lighting system can effectively reduce the growth of common bacteria on bedsores by 98%. The antibacterial effects were different in various strains. A specific photosensitizer concentration was required for optimal effects. The results suggest that the optimal combination of ICG concentration and light power should be examined before ICG-PDT treatments. In conclusion, the RF lighting system has potential to inactivate bacterial infections of bedsores in future clinical application.
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Guan-YuChen and 陳冠宇. "Design and Development of Weighted Decision-Tree Regulating Care-Bed with Bedsore Protection and Viscera Signal Analysis." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/84611795668535676963.
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碩士國立成功大學
航空太空工程學系碩博士班
98
The bedsore problem is common in long-term bedridden patients which can be caused by body weight that leads to skin necrosis when staying on the same lying position over excessive period of time. Through feedback control method, the objective of this study is to design and develop an automated care-bed and proposes a bed-plates angle sequence for preventing or help healing bedsore while increases comfort for the bedridden patients. The model bed developed in this research is formed by six interconnected and movable bed plates. It also includes a pressure measurement module with six sensors for taking particular location of body pressure on every bed plate, a pulse measurement module for monitoring heart beat and viscera signals, power drive and transmission module for adjusting bed-plates angle, and a data processing and control module for performing FFT processing and weighted decision-tree regulation. Unlike the open-loop controlled ones that currently can be acquired from the market, the proposed care-bed adjusts the bed-plates angle according to the pressure and the duration of time measured on the plates. It also considers the heart beat and the associated viscera frequencies for any unusual or abnormal condition, which may be the sign of discomfort or sickness of the patient, and calls to the care takers’ attention. Special sequence of bed-plates angle can be set to reduce the load over the body position with bedsore. A comfort index is formulated to quantify and assess the patient’s feeling. Several experiments have been performed on the proposed care-bed with a proportioned human dummy and the results indicate that better care with higher comfort index than the existing ones can be achieved.