Bibliografie tematiche / Physiological and vital signs

Letteratura scientifica selezionata sul tema "Physiological and vital signs"

Autore: Grafiati

Pubblicato: 15 giugno 2024

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Articoli di riviste sul tema "Physiological and vital signs":

Kho, Y. Y., S. Hashim e C. F. Soon. "Vital physiological signs monitoring". International Journal of Computer Applications in Technology 21, n. 1/2 (2004): 58. http://dx.doi.org/10.1504/ijcat.2004.005340.

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Lv, Zhihan, e Yuxi Li. "Wearable Sensors for Vital Signs Measurement: A Survey". Journal of Sensor and Actuator Networks 11, n. 1 (11 marzo 2022): 19. http://dx.doi.org/10.3390/jsan11010019.

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With the outbreak of coronavirus disease-2019 (COVID-19) worldwide, developments in the medical field have aroused concerns within society. As science and technology develop, wearable medical sensors have become the main means of medical data acquisition. To analyze the intelligent development status of wearable medical sensors, the current work classifies and prospects the application status and functions of wireless communication wearable medical sensors, based on human physiological data acquisition in the medical field. By understanding its working principles, data acquisition modes and action modes, the work chiefly analyzes the application of wearable medical sensors in vascular infarction, respiratory intensity, body temperature, blood oxygen concentration, and sleep detection, and reflects the key role of wearable medical sensors in human physiological data acquisition. Further exploration and prospecting are made by investigating the improvement of information security performance of wearable medical sensors, the improvement of biological adaptability and biodegradability of new materials, and the integration of wearable medical sensors and intelligence-assisted rehabilitation. The research expects to provide a reference for the intelligent development of wearable medical sensors and real-time monitoring of human health in the follow-up medical field.

Vujanac, Ivan, Danijela Kirovski, Jovan Bojkovski, Radisa Prodanovic, Bozidar Savic e Horea Samanc. "Effect of heat stress on vital signs in high-yield dairy cows". Veterinarski glasnik 64, n. 1-2 (2010): 53–63. http://dx.doi.org/10.2298/vetgl1002053v.

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The objective of this work was to examine the influence of outer temperature on values of the vital signs (temperature, pulse, respiration) in high-yield dairy cows in early stages of lactation, as well as to establish, on the grounds of the degree of correlation between the values for the vital signs and the temperature humidity index (THI), possibilities for using the examined physiological parameters of the organism as an indicator of heat stress. The experiment covered 10 high-yield dairy cows in the first phase of lactation. The investigations were carried out in the course of July and the first half of August. During the course of the experiment, the average THI was determined daily. An average daily THI higher than 70 indicated that the animal had been exposed to heat stress on that day. Vital signs were measured on twelve occasions during the period of investigation (June 30, July 4, July 7, July 10, July 14, July 17, July 21, July 24, July 29, August 5, August 11, and August 14). It was established on the grounds of the THI values that the examined animals were exposed to heat stress on June 30, July 4, July 7, July 14, July 17, July 21, July 29, August 5, and August 14, while there was no heat stress on July 10, July 24, and August 11. The average body temperature during all the periods of examination, with the exception of July 24, was above the upper physiological limit. A high degree of correlation was established between body temperature and the heat index (r = +0. 509; p = 0.05). The number of respiratory movements per minute was above the physiological values during the entire period of investigation. There was a high degree of correlation between the number of respiratory movements and THI (r = + 0.625; p<0.05). The average pulse values and number of contractions of the rumen did not vary significantly during the period of investigation. No significant correlation was established between the pulse and THI values, or between motoric activities of the rumen and THI. The results obtained in this work demonstrate that, in high-yield dairy cows exposed to moderate heat stress, the body temperature and the number of respiratory movements are above physiologically permitted values. On these grounds, it can be concluded that these two parameters of the vital signs can be used as physiological indicators of heat stress. .

Bossung, Verena, Adrian Singer, Tiara Ratz, Martina Rothenbühler, Brigitte Leeners e Nina Kimmich. "Changes in Heart Rate, Heart Rate Variability, Breathing Rate, and Skin Temperature throughout Pregnancy and the Impact of Emotions—A Longitudinal Evaluation Using a Sensor Bracelet". Sensors 23, n. 14 (23 luglio 2023): 6620. http://dx.doi.org/10.3390/s23146620.

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(1) Background: Basic vital signs change during normal pregnancy as they reflect the adaptation of maternal physiology. Electronic wearables like fitness bracelets have the potential to provide vital signs continuously in the home environment of pregnant women. (2) Methods: We performed a prospective observational study from November 2019 to November 2020 including healthy pregnant women, who recorded their wrist skin temperature, heart rate, heart rate variability, and breathing rate using an electronic wearable. In addition, eight emotions were assessed weekly using five-point Likert scales. Descriptive statistics and a multivariate model were applied to correlate the physiological parameters with maternal emotions. (3) Results: We analyzed data from 23 women using the electronic wearable during pregnancy. We calculated standard curves for each physiological parameter, which partially differed from the literature. We showed a significant association of several emotions like feeling stressed, tired, or happy with the course of physiological parameters. (4) Conclusions: Our data indicate that electronic wearables are helpful for closely observing vital signs in pregnancy and to establish modern curves for the physiological course of these parameters. In addition to physiological adaptation mechanisms and pregnancy disorders, emotions have the potential to influence the course of physiological parameters in pregnancy.

Wang, Zixia, Shuai Zha, Baoxian Yu, Pengbin Chen, Zhiqiang Pang e Han Zhang. "Sleep Staging Using Noncontact-Measured Vital Signs". Journal of Healthcare Engineering 2022 (8 luglio 2022): 1–11. http://dx.doi.org/10.1155/2022/2016598.

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As a physiological phenomenon, sleep takes up approximately 30% of human life and significantly affects people’s quality of life. To assess the quality of night sleep, polysomnography (PSG) has been recognized as the gold standard for sleep staging. The drawbacks of such a clinical device, however, are obvious, since PSG limits the patient’s mobility during the night, which is inconvenient for in-home monitoring. In this paper, a noncontact vital signs monitoring system using the piezoelectric sensors is deployed. Using the so-designed noncontact sensing system, heartbeat interval (HI), respiratory interval (RI), and body movements (BM) are separated and recorded, from which a new dimension of vital signs, referred to as the coordination of heartbeat interval and respiratory interval (CHR), is obtained. By extracting both the independent features of HI, RI, and BM and the coordinated features of CHR in different timescales, Wake-REM-NREM sleep staging is performed, and a postprocessing of staging fusion algorithm is proposed to refine the accuracy of classification. A total of 17 all-night recordings of noncontact measurement simultaneous with PSG from 10 healthy subjects were examined, and the leave-one-out cross-validation was adopted to assess the performance of Wake-REM-NREM sleep staging. Taking the gold standard of PSG as reference, numerical results show that the proposed sleep staging achieves an averaged accuracy and Cohen’s Kappa index of 82.42% and 0.63, respectively, and performs robust to subjects suffering from sleep-disordered breathing.

El Abbaoui, Amal, David Sodoyer e Fouzia Elbahhar. "Contactless Heart and Respiration Rates Estimation and Classification of Driver Physiological States Using CW Radar and Temporal Neural Networks". Sensors 23, n. 23 (28 novembre 2023): 9457. http://dx.doi.org/10.3390/s23239457.

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The measurement and analysis of vital signs are a subject of significant research interest, particularly for monitoring the driver’s physiological state, which is of crucial importance for road safety. Various approaches have been proposed using contact techniques to measure vital signs. However, all of these methods are invasive and cumbersome for the driver. This paper proposes using a non-contact sensor based on continuous wave (CW) radar at 24 GHz to measure vital signs. We associate these measurements with distinct temporal neural networks to analyze the signals to detect and extract heart and respiration rates as well as classify the physiological state of the driver. This approach offers robust performance in estimating the exact values of heart and respiration rates and in classifying the driver’s physiological state. It is non-invasive and requires no physical contact with the driver, making it particularly practical and safe. The results presented in this paper, derived from the use of a 1D Convolutional Neural Network (1D-CNN), a Temporal Convolutional Network (TCN), a Recurrent Neural Network particularly the Bidirectional Long Short-Term Memory (Bi-LSTM), and a Convolutional Recurrent Neural Network (CRNN). Among these, the CRNN emerged as the most effective Deep Learning approach for vital signal analysis.

Martins, José Carlos Amado, Helisamara Mota Guedes, Cristiane Chaves de Souza e Tânia Couto Machado Chianca. "Associação entre sinais vitais e Sistema Manchester de Triagem: estudo observacional retrospectivo". Online Brazilian Journal of Nursing 16, n. 4 (31 agosto 2018): 379. http://dx.doi.org/10.17665/1676-4285.20175876.

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Aim: To evaluate the association between vital signs collected at the patient's entrance to the emergency department and the risk levels of the Manchester Triage System (MTS). Method: This is a retrospective observational study; whose sample was 154,714 patients. The exposure factor was the vital signs data, and the primary endpoint was the level of risk of MTS. Statistical, descriptive and inferential analyzes were conducted. Results: The most evaluated vital data was pain intensity; blood pressure was the least evaluated. Changes in heart rate to more or less of physiological patterns have increased the clinical priority of patients. Discussion: The higher the level of severity of MTS, the greater the variability of the mean of the vital signs evaluated. Conclusion: More severe patients tend to present greater variation in terms of vital signs on admission to the emergency department.

De Sario Velasquez, Gioacchino D., Antonio J. Forte, Christopher J. McLeod, Charles J. Bruce, Laura M. Pacheco-Spann, Karla C. Maita, Francisco R. Avila et al. "Predicting Cardiopulmonary Arrest with Digital Biomarkers: A Systematic Review". Journal of Clinical Medicine 12, n. 23 (30 novembre 2023): 7430. http://dx.doi.org/10.3390/jcm12237430.

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(1) Background: Telemetry units allow the continuous monitoring of vital signs and ECG of patients. Such physiological indicators work as the digital signatures and biomarkers of disease that can aid in detecting abnormalities that appear before cardiac arrests (CAs). This review aims to identify the vital sign abnormalities measured by telemetry systems that most accurately predict CAs. (2) Methods: We conducted a systematic review using PubMed, Embase, Web of Science, and MEDLINE to search studies evaluating telemetry-detected vital signs that preceded in-hospital CAs (IHCAs). (3) Results and Discussion: Out of 45 studies, 9 met the eligibility criteria. Seven studies were case series, and 2 were case controls. Four studies evaluated ECG parameters, and 5 evaluated other physiological indicators such as blood pressure, heart rate, respiratory rate, oxygen saturation, and temperature. Vital sign changes were highly frequent among participants and reached statistical significance compared to control subjects. There was no single vital sign change pattern found in all patients. ECG alarm thresholds may be adjustable to reduce alarm fatigue. Our review was limited by the significant dissimilarities of the studies on methodology and objectives. (4) Conclusions: Evidence confirms that changes in vital signs have the potential for predicting IHCAs. There is no consensus on how to best analyze these digital biomarkers. More rigorous and larger-scale prospective studies are needed to determine the predictive value of telemetry-detected vital signs for IHCAs.

Kaputa, David, David Price e John D. Enderle. "A Portable, Inexpensive, Wireless Vital Signs Monitoring System". Biomedical Instrumentation & Technology 44, n. 4 (1 luglio 2010): 350–53. http://dx.doi.org/10.2345/0899-8205-44.4.350.

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Abstract The University of Connecticut, Department of Biomedical Engineering has developed a device to be used by patients to collect physiological data outside of a medical facility. This device facilitates modes of data collection that would be expensive, inconvenient, or impossible to obtain by traditional means within the medical facility. Data can be collected on specific days, at specific times, during specific activities, or while traveling. The device uses biosensors to obtain information such as pulse oximetry (SpO2), heart rate, electrocardiogram (ECG), non-invasive blood pressure (NIBP), and weight which are sent via Bluetooth to an interactive monitoring device. The data can then be downloaded to an electronic storage device or transmitted to a company server, physician's office, or hospital. The data collection software is usable on any computer device with Bluetooth capability, thereby removing the need for special hardware for the monitoring device and reducing the total cost of the system. The modular biosensors can be added or removed as needed without changing the monitoring device software. The user is prompted by easy-to-follow instructions written in non-technical language. Additional features, such as screens with large buttons and large text, allow for use by those with limited vision or limited motor skills.

Früh, Jonas, Andre Fuchs, Tafese Beyene Tufa, Loraine Früh, Zewdu Hurissa, Hans Martin Orth, Johannes Georg Bode, Kirsten Alexandra Eberhardt, Dieter Häussinger e Torsten Feldt. "Variation of vital signs with potential to influence the performance of qSOFA scoring in the Ethiopian general population at different altitudes of residency: A multisite cross-sectional study". PLOS ONE 16, n. 2 (4 febbraio 2021): e0245496. http://dx.doi.org/10.1371/journal.pone.0245496.

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Introduction The physiological range of different vital signs is dependent on various environmental and individual factors. There is a strong interdependent relationship between vital signs and health conditions. Deviations of the physiological range are commonly used for risk assessment in clinical scores, e.g. respiratory rate (RR) and systolic blood pressure (BPsys) in patients with infections within the quick sequential organ failure assessment (qSOFA) score. A limited number of studies have evaluated the performance of such scores in resource-limited health care settings, showing inconsistent results with mostly poor discriminative power. Divergent standard values of vital parameters in different populations, e.g. could influence the accuracy of various clinical scores. Methods This multisite cross-sectional observational study was performed among Ethiopians residing at various altitudes in the cities of Asella (2400m above sea level (a.s.l.)), Adama (1600m a.s.l.), and Semara (400m a.s.l.). Volunteers from the local general population were asked to complete a brief questionnaire and have vital signs measured. Individuals reporting acute or chronic illness were excluded. Results A positive qSOFA score (i.e. ≥2), indicating severe illness in patients with infection, was common among the studied population (n = 612). The proportion of participants with a positive qSOFA score was significantly higher in Asella (28.1%; 55/196), compared with Adama, (8.3%; 19/230; p<0.001) and Semara (15.1%; 28/186; p = 0.005). Concerning the parameters comprised in qSOFA, the thresholds for RR (≥22/min) were reached in 60.7%, 34.8%, and 38.2%, and for BPsys (≤100 mmHg) in 48.5%, 27.8%, and 36.0% in participants from Asella, Adama, and Semara, respectively. Discussion The high positivity rate of qSOFA score in the studied population without signs of acute infection may be explained by variations of the physiological range of different vital signs, possibly related to the altitude of residence. Adaptation of existing scores using local standard values could be helpful for reliable risk assessment.

Più fonti

Tesi sul tema "Physiological and vital signs":

Berelowitz, Jonathan. "The development of a neonatal vital signs database". Master's thesis, University of Cape Town, 1992. http://hdl.handle.net/11427/26607.

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Modern intelligent monitoring systems use digital computer technology to analyze and evaluate physiological vital signs. This analytical and evaluative process is performed by algorithms developed for this purpose. The degree of 'intelligence' of the monitoring system is dependent on the 'sensitivity' and 'specificity' of these algorithms. In order to develop robust and clinically valid algorithms, a database of representative waveforms is required. The aim of this thesis was to create a neonatal vital signs database to be used for this purpose, by means of a computer-based central station. The computer was interfaced to a number of neonatal monitors (Neonatal ICU, Groote Schuur Hospital). The monitors were interrogated to obtain patient condition, ECG waveforms and respiration waveforms using the impedance technique. When possible, percentage oxygen saturation was also captured. The database contains 509 documented clinical records obtained from 35 patients and 20 records containing examples of technical alarm conditions and high frequency noise. Additional patient record data is included. Clinical events recorded include apnoea, bradycardia, periodic breathing tachycardia, tachypnoea and normal traces. These events were recorded against a variety of signal quality conditions that have been characterized in Appendix C. A prototype rate detection algorithm was checked using samples from the database.

Bruijns, Stevan Raynier. "From anxiety to haemorrhage : describing the physiological effects that confound the prognostic inferences of vital signs in injury". Doctoral thesis, University of Cape Town, 2013. http://hdl.handle.net/11427/2855.

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Shah, Syed Ahmar. "Vital sign monitoring and data fusion for paediatric triage". Thesis, University of Oxford, 2012. http://ora.ox.ac.uk/objects/uuid:80ae66e3-849b-4df1-b064-f9eb7530200d.

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Accurate assessment of a child’s health is critical for appropriate allocation of medical resources and timely delivery of healthcare in both primary care (GP consultations) and secondary care (ED consultations). Serious illnesses such as meningitis and pneumonia account for 20% of deaths in childhood and require early recognition and treatment in order to maximize the chances of survival of affected children. Due to time constraints, poorly defined normal ranges, difficulty in achieving accurate readings and the difficulties faced by clinicians in interpreting combinations of vital signs, vital signs are rarely measured in primary care and their utility is limited in emergency departments. This thesis aims to develop a monitoring and data fusion system, to be used in both primary care and emergency department settings during the initial assessment of children suspected of having a serious infection. The proposed system relies on the photoplethysmogram (PPG) which is routinely recorded in different clinical settings with a pulse oximeter using a small finger probe. The most difficult vital sign to measure accurately is respiratory rate which has been found to be predictive of serious infection. An automated method is developed to estimate the respiratory rate from the PPG waveform using both the amplitude modulation caused by changes in thoracic pressure during the respiratory cycle and the phenomenon of respiratory sinus arrhythmia, the heart rate variability associated with respiration. The performance of such automated methods deteriorates when monitoring children as a result of frequent motion artefact. A method is developed that automatically identifies high-quality PPG segments mitigating the effects of motion on the estimation of respiratory rate. In the final part of the thesis, the four vital signs (heart rate, temperature, oxygen saturation and respiratory rate) are combined using a probabilistic framework to provide a novelty score for ranking various diagnostic groups, and predicting the severity of infection in two independent data sets from two different clinical settings.

Witt, Alexander W. "Using Ballistocardiography to Perform Key Distribution in Wearable IoT Networks". Digital WPI, 2017. https://digitalcommons.wpi.edu/etd-theses/829.

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A WIoT is a wireless network of low-power sensing nodes placed on the human body. While operating, these networks routinely collect physiological signals to send to offsite medical professionals for review. In this manner, these networks support a concept known as pervasive healthcare in which patients can be continuously monitored and treated remotely. Given that these networks are used to guide medical treatment and depend on transmitting sensitive data, it is important to ensure that the communication channel remains secure. Symmetric pairwise cryptography is a traditional scheme that can be used to provide such security. The scheme functions by sharing a cryptographic key between a pair of sensors. Once shared, the key can then be used by both parties to encrypt and decrypt all future messages. To configure a WIoT to support the use of symmetric pairwise cryptography a key distribution protocol is required. Schemes for pre-deployment are often used to perform this distribution. These schemes usually require inserting key information into WIoT devices before they can be used in the network. Unfortunately, this need to manually configure WIoT devices can decrease their usability. In this thesis we propose and evaluate an alternative approach to key distribution that uses physiological signals derived from accelerometer and gyroscope sensors. The evaluation of our approach indicates that more study is required to determine techniques that will enable ballistocardiography-derived physiological signals to provide secure key distribution.

Walcon, Erin Colleen. "Vital spaces/vital signs : young people, performance, identity and dialogue". Thesis, University of Exeter, 2012. http://hdl.handle.net/10871/9785.

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This thesis advocates that young people’s participatory theatre in Britain is an important site for dialogue - both internally between young people and externally with those in positions of power and authority who have decision-making responsibilities in young people’s lives. Contextualising the work within the field of critical pedagogy, the thesis asks questions about how devised theatre with young participants can be an effective method to start conversations about young people’s identity and role in society. The research was conducted within a Participatory Action Research methodology, and involved about 600 young people from across Devon in a variety of pilot projects which became increasingly dialogic in form over the three years of study. Looking first at the complex issue of ‘youth’ identity within sociology, cultural studies, ethnography and geography, the thesis posits that the fields of theatre and performance studies have important contributions to make to an understanding of how identity is a performed and constructed concept. Building upon this premise, the second chapter overviews the existing field of young people’s participatory theatre in the UK, stipulating that a pedagogical framework built on an historicized understanding of educational theatre is essential to mapping the existing state of practice. This pedagogical framing allows for navigation through the increasingly impact-driven criteria which can profoundly shape the aesthetics and authorship of such work when conducted in the field. These (often silent) shaping forces are analysed through a set of case study examples. Chapter III defines and defends the framing of this work as a form of critical pedagogy, specifically exploring the definitions of dialogue and literac(ies) through case study examples of dialogic practice with young participants. Chapters IV and V examine the PAR research conducted over three years under the heading Vital Spaces/Vital Signs, which moved from small-scale pilot projects in youth centres to larger-scale ‘devised dialogues’ within more traditional theatre spaces. The praxis and findings encountered within the action research are detailed, and recommendations for future extended dialogic work are made.

Chandrasekaran, Vikram. "Measuring Vital Signs Using Smart Phones". Thesis, University of North Texas, 2010. https://digital.library.unt.edu/ark:/67531/metadc33139/.

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Smart phones today have become increasingly popular with the general public for its diverse abilities like navigation, social networking, and multimedia facilities to name a few. These phones are equipped with high end processors, high resolution cameras, built-in sensors like accelerometer, orientation-sensor, light-sensor, and much more. According to comScore survey, 25.3% of US adults use smart phones in their daily lives. Motivated by the capability of smart phones and their extensive usage, I focused on utilizing them for bio-medical applications. In this thesis, I present a new application for a smart phone to quantify the vital signs such as heart rate, respiratory rate and blood pressure with the help of its built-in sensors. Using the camera and a microphone, I have shown how the blood pressure and heart rate can be determined for a subject. People sometimes encounter minor situations like fainting or fatal accidents like car crash at unexpected times and places. It would be useful to have a device which can measure all vital signs in such an event. The second part of this thesis demonstrates a new mode of communication for next generation 9-1-1 calls. In this new architecture, the call-taker will be able to control the multimedia elements in the phone from a remote location. This would help the call-taker or first responder to have a better control over the situation. Transmission of the vital signs measured using the smart phone can be a life saver in critical situations. In today's voice oriented 9-1-1 calls, the dispatcher first collects critical information (e.g., location, call-back number) from caller, and assesses the situation. Meanwhile, the dispatchers constantly face a "60-second dilemma"; i.e., within 60 seconds, they need to make a complicated but important decision, whether to dispatch and, if so, what to dispatch. The dispatchers often feel that they lack sufficient information to make a confident dispatch decision. This remote-media-control described in this system will be able to facilitate information acquisition and decision-making in emergency situations within the 60-second response window in 9-1-1 calls using new multimedia technologies.

Tlemsani, Fatima Zohra. "Mesure des transferts thermiques et hydriques par intégration des fluxmètres thermiques textiles dans un vêtement pour les enfants en situation de polyhandicap". Electronic Thesis or Diss., Université de Lille (2022-....), 2023. http://www.theses.fr/2023ULILN004.

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Les enfants souffrants de la paralysie cérébrale éprouvent un stress psychologique important lors de la rééducation. Ceci est lié à de nombreux facteurs psychologiques comme la peur, l'anxiété et les phobies, et d'autres physiques tels que le poids des appareils de rééducation, leurs frottements sur le corps, et les douleurs liées aux problèmes de motricité. Dans l'état de l'art, il a été montré que les chercheurs ont suivi une approche utilisant les paramètres physiologiques comme bioindicateurs de stress. Ils utilisent principalement des biosignaux tels que la température cutanée, l'électrocardiographie (ECG), l'activité électrodermale (EDA), l'électromyographie (EMG), la respiration, le diamètre de la pupille, l'électroencéphalographie (EEG) pour l'évaluation du stress. Etant donné que les échanges thermiques et hydriques sont fonction de l'évolution de la température, ils peuvent également faire l'objet d'un indicateur de stress, d'autant plus qu'ils représentent un indicateur d'inconfort thermique. Pour cela, dans ce travail, un fluxmètre thermique textile, qui possède des caractéristiques de perméabilité, souplesse et conformité à être utilisé sur la peau, a été développé, analysé et caractérisé. Un dispositif expérimental a été mis en place afin d'établir un système de calibration de fluxmètre. Ensuite le comportement thermo-hydrique des fluxmètres a été analysé dans des conditions de laboratoire. Les fluxmètres thermiques textiles développés ont montré des sensibilités dans le même ordre de grandeur que le capteur étalon. De plus, l'étude des performances de fluxmètre a montré un comportement similaire à celle du capteur étalon. Par conséquent, des tests de stress ont été menés sur 20 volontaires adultes en bonne santé, de différentes tranches d'âges, et différents gendres, femmes et hommes, et sur deux enfants, de 7 ans et 12 ans, également en bonne santé. Trois différents types d'activité ont été réalisés pour provoquer le stress, à savoir, des activités mathématiques, des jeux de réalité virtuelle et une activité sportive. Cela a été dans l'objectif de stimuler différents types de stress, i.e. le stress positif (eustress), le stress négatif et le stress physique, respectivement. Les résultats des tests montrent un comportement similaire entre les deux fluxmètres (textile et étalon), et une corrélation positive entre le comportement de l'électrocardiogramme et celui du fluxmètre. Un lien a été établi dans la majorité des cas entre le retour des volontaires concernant le stress ressenti, et leurs réponse thermo-hydrique relevée par le fluxmètre thermique textile
Children with cerebral palsy experience significant psychological stress during rehabilitation. This is related to many psychological factors such as fear, anxiety and phobias, and physical factors such as the weight of the rehabilitation devices, their friction on the body, and the pain related to motor problems. In the state of art, it has been shown that researchers have followed an approach using physiological parameters as biomarkers of stress. They mainly use biosignals such as skin temperature (ST), electrocardiography (ECG), electrodermal activity (EDA), electromyography (EMG), respiration, pupil diameter, electroencephalography (EEG) for stress assessment. Since thermal and hydric exchanges are a function of temperature evolution, they can also be an indicator of stress, especially since they represent an indicator of thermal discomfort. For this purpose, in this work, a textile heat fluxmeter, which has characteristics of permeability, flexibility and suitability for use on the skin, has been developed, analyzed and characterized. An experimental device was set up in order to establish a calibration system of the fluxmeter. Then the thermo-hydric behavior of the fluxmeters was analyzed under laboratory conditions. The developed textile heat fluxmeter showed similar sensitivities as the gold standard sensor. Moreover, the study of the fluxmeter performance showed a similar behavior to that of the standard sensor. Therefore, stress tests were conducted on 20 healthy adult volunteers of different ages and genders, women and men, and on two children, 7 and 12 years old, also healthy. Three different types of activities were performed to induce stress, namely, mathematical activities, virtual reality games and a sports activity. This was with the objective of stimulating different types of stress, i.e. positive stress (eustress), negative stress and physical stress, respectively. The results of the tests show a similar behavior between the two fluxmeters (textile and standard), and a positive correlation between the behavior of the electrocardiogram and the fluxmeter. A relation was established in the majority of cases between the volunteers' feedback on the stress they felt and their thermo-hydric response measured by the textile heat fluxmeter

Yang, Fan. "Object Detection for Contactless Vital Signs Estimation". Thesis, Université d'Ottawa / University of Ottawa, 2021. http://hdl.handle.net/10393/42297.

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This thesis explores the contactless estimation of people’s vital signs. We designed two camera-based systems and applied object detection algorithms to locate the regions of interest where vital signs are estimated. With the development of Deep Learning, Convolutional Neural Network (CNN) model has many applications in the real world nowadays. We applied the CNN based frameworks to the different types of camera based systems and improve the efficiency of the contactless vital signs estimation. In the field of medical healthcare, contactless monitoring draws a lot attention in the recent years because the wide use of different sensors. However most of the methods are still in the experimental phase and have never been used in real applications. We were interested in monitoring vital signs of patients lying in bed or sitting around the bed at a hospital. This required using sensors that have range of 2 to 5 meters. We developed a system based on the depth camera for detecting people’s chest area and the radar for estimating the respiration signal. We applied a CNN based object detection method to locate the position of the subject lying in the bed covered with blanket. And the respiratory-like signal is estimated from the radar device based on the detected subject’s location. We also create a manually annotated dataset containing 1,320 depth images. In each of the depth image the silhouette of the subject’s upper body is annotated, as well as the class. In addition, a small subset of the depth images also labeled four keypoints for the positioning of people’s chest area. This dataset is built on the data collected from the anonymous patients at the hospital which is substantial. Another problem in the field of human vital signs monitoring is that systems seldom contain the functions of monitoring multiple vital signs at the same time. Though there are few attempting to work on this problem recently, they are still all prototypes and have a lot limitations like shorter operation distance. In this application, we focused on contactless estimating subjects’ temperature, breathing rate and heart rate at different distances with or without wearing the mask. We developed a system based on thermal and RGB camera and also explore the feasibility of CNN based object detection algorithms to detect the vital signs from human faces with specifically defined RoIs based on our thermal camera system. We proposed the methods to estimate respiratory rate and heart rate from the thermal videos and RGB videos. The mean absolute difference (MAE) between the estimated HR using the proposed method and the baseline HR for all subjects at different distances is 4.24 ± 2.47 beats per minute, the MAE between the estimated RR and the reference RR for all subjects at different distances is 1.55 ± 0.78 breaths per minute.

Johnson, Kimberly D. "Patients’ Vital Signs and the Length of Time between the Monitoring of Vital Signs during Times of Emergency Department Crowding". Case Western Reserve University School of Graduate Studies / OhioLINK, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=case1301014586.

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Roald, Nikolai Grov. "Estimation of Vital Signs from Ambient-Light Non-Contact Photoplethysmography". Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for elektronikk og telekommunikasjon, 2013. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-20869.

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Abstract In this thesis we have investigated different aspects of non-contact photoplethysmography (PPG) using only ambient lighting. We have investigated how to develop a functional, automatic system based on this to detect heart rate. We have also investigated how to use the concept of non-contact PPG to acquire further relevant medical information from a human subject. Abstract We have investigated different color spaces and found that the Hue and Saturation channels from HSL and HSV color spaces are far superior to the Green channel of the RGB color space, which has previously been used. Especially under circumstances with much noise, are these channels superior and more robust against noise. Abstract The concept of independent component analysis (ICA) has been investigated as a method of improving results. It is found to improve some channels and color spaces, but the best ICA channel does not have better performance than the best non-ICA channel. Abstract The phase of, and difference between, PPG signals has been investigated as a means of acquiring medical information. The phase measurements are highly vulnerable to noise, but there are indications that occlusion can induce a phase difference between different limbs. This difference can be used to calculate change in blood pressure. Abstract We have synchronized ECG and PPG data, and found that there is a high correlation between the two. Pulse transit time (PTT) from the heart to the measurement site can be calculated using this synchronized information. Abstract Further have different motion compensation algorithms and signal processing techniques been investigated with the goal of improving the PPG signal and a programs ability to automatically detect heart rate.

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Libri sul tema "Physiological and vital signs":

Barbara, Wood. Vital signs. [Place of publication not identified]: New Amer Library, 1989.

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Delgado, Juan. Vital signs. Berkeley, California: Heyday, 2013.

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Martin, Jane. Vital signs. Alexandria, VA: Alexander Street Press, 2005.

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Barbara, Wood. Vital signs. London: Warner, 1994.

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Barbara, Wood. Vital signs. Nashville, TN: Turner Pub. Co., 2012.

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Cook, Robin. Vital signs. New York: Putnam, 1991.

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Cook, Robin. Vital signs. London: Macmillan, 1991.

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Cook, Robin. Vital signs. London: Guild Publishing, 1991.

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Barbara, Wood. Vital signs. London: Piatkus, 1985.

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Cook, Robin. Vital signs. New York: Berkley Books, 1992.

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Capitoli di libri sul tema "Physiological and vital signs":

Lin, James C. "Vital Sign Sensing". In Noninvasive Physiological Measurement, 179–265. Boca Raton: CRC Press, 2024. http://dx.doi.org/10.1201/9781003315223-7.

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Davenport, Andrew, Todd W. Costantini, Raul Coimbra, Marc M. Sedwitz, A. Brent Eastman, David V. Feliciano, David V. Feliciano et al. "Vital Signs". In Encyclopedia of Intensive Care Medicine, 2458. Berlin, Heidelberg: Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-00418-6_2426.

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Carroll, Michael. "Vital Signs". In Europa’s Lost Expedition, 125–34. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-43159-8_9.

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Sebeok, Thomas A. "Vital Signs". In I Think I Am a Verb, 59–79. Boston, MA: Springer US, 1986. http://dx.doi.org/10.1007/978-1-4899-3490-1_5.

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Diggens, Pam. "Vital signs". In Foundation Skills for Caring, 153–63. London: Macmillan Education UK, 2009. http://dx.doi.org/10.1007/978-1-137-11733-5_16.

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Phillips, Raymond E. "Vital Signs". In The Physical Exam, 47–57. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-63847-8_8.

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Moore, Tina. "Vital signs". In Nursing Skills in Cardiorespiratory Assessment and Monitoring, 21–34. New York: Routledge, 2021. | Series: Skills in nursing practice: Routledge, 2021. http://dx.doi.org/10.4324/9781351066068-4.

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Yale, Steven H., Halil Tekiner, Joseph J. Mazza, Eileen S. Yale e Ryan C. Yale. "Vital Signs". In Cardiovascular Eponymic Signs, 391–408. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-67596-7_18.

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Memolo, Jennifer. "Vital Signs". In Procedures and Patient Care for the Physical Therapist Assistant, 45–61. New York: Routledge, 2024. http://dx.doi.org/10.4324/9781003525974-4.

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Larson, Terry. "Vital Signs". In Entry Level Skill Checklists for Physical Therapist Assistant Students, 3–6. New York: Routledge, 2024. http://dx.doi.org/10.4324/9781003523987-2.

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Atti di convegni sul tema "Physiological and vital signs":

Ghalambor, Shaghayegh, e Morteza Modarresi Asem. "Analytical Survey on Wearable Sensors in Monitoring Physiological Responses and Vital Signs". In 2018 IEEE 9th Annual Information Technology, Electronics and Mobile Communication Conference (IEMCON). IEEE, 2018. http://dx.doi.org/10.1109/iemcon.2018.8615017.

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Tseng, Chin Dar, Jia-Hong Su e Tsair-Fwu Lee. "System Development for Patient's Physiological Data Storage and Real-Time Vital Signs Monitoring". In 2016 3rd International Conference on Green Technology and Sustainable Development (GTSD). IEEE, 2016. http://dx.doi.org/10.1109/gtsd.2016.27.

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Amer ABD ALGABAR, Fatima, Batool Abd AL AMEER BAQER e Lamiaa Saoud ABBOD. "MANUSCRIPT TITLE: A COMPARATIVE STUDY OF SOME VITAL SIGNS OF INFECTED PREGNANT WOMEN COVID-19 WITH THOSE OF NON - INFECTED PREGNANT WOMEN". In VII. INTERNATIONAL SCIENTIFIC CONGRESSOF PURE,APPLIEDANDTECHNOLOGICAL SCIENCES. Rimar Academy, 2023. http://dx.doi.org/10.47832/minarcongress7-2.

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While pregnant, the mother and fetus coexist, which is a unique physiological state.Disruption of maternal-fetal connection leads to diseases of pregnancy and the infant This study aims to present current developments that may help in the early detection of issues, highlight the difficulties in measuring vital signs accurately in pregnancy, and estimate typical ranges for maternal vital signs throughout pregnancy. Additionally, the study focuses on the association between SARS-CoV-2 infection during pregnancy and unfavorable pregnancy outcomes. A higher risk of preeclampsia, premature birth, and other unfavorable pregnancy outcomes may be linked to COVID-19. The vital signs of Covid-19-contaminated expectant mothers, particularly respiration, pulse, and temperature, were found to differ significantly at p values of (0.0001*, 0.0001*, and 0.001*). The research demonstrated how Covid 19 affected expectant mothers who were at risk for preeclampsia, stillbirth, premature birth, and NICU hospitalization. It is believed that changes to vital indicators (Heart rate, blood pressure, temperature, oxygen saturation, and respiratory rate)occur both during and right after pregnancy. especially when a pregnant woman contracts the Corona infection. With COVID-19, we seek to synthesize the body of research on changes in vital signs throughout pregnancy so that fresh centile charts could be made for every stage of pregnancy and the first few weeks following delivery.

Aranda, Jorge Arthur Schneider, Juliano Varella De Carvalho e Jorge Luis Victória Barbosa. "Odin: Um modelo de coleta adaptativa de sinais vitais". In Anais Estendidos do Simpósio Brasileiro de Sistemas Multimídia e Web. Sociedade Brasileira de Computação - SBC, 2021. http://dx.doi.org/10.5753/webmedia_estendido.2021.17605.

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Wearable devices emerged from the advancement of communication technology and the miniaturization of electronic components. These devices periodically monitor the user’s vital signs and generally have low battery life. This thesis proposes Odin, a model for optimized collection of vital signs based on adaptive strategies. The comparison with related works indicates that Odin is the only proposal that presents an adaptive collection of vital signs, which allows the optimized generation of context history. The research validation is divided in three groups. In the first group, simulations were performed in different scenarios, through requisition control, an increase of 114% in battery life was obtained in the adaptive scenario compared to a collection without adaptivity. In the second group, the Odin model was applied to a real physiological data-base and allowed for a reduction in the number of requests due to the adaptability of the collection. This reduction optimized battery consumption by 66% compared to a collection without adaptability. Finally, in the third group, the model was applied in collecting data through an Arduino and also a cardiac monitoring strap available on the market (Polar H7). During this third part of the evaluation, savings of 18% were observed in the power consumption of the mobile devices involved in the data collection.

Benjamin, D., H. Gholam Hosseini, A. Al-Jumaily e M. J. Harrison. "Fuzzy Logic Approach to Wireless Diagnostic Alarms in Anesthesia". In ASME 2008 International Mechanical Engineering Congress and Exposition. ASMEDC, 2008. http://dx.doi.org/10.1115/imece2008-67058.

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This paper explores the use of a fuzzy logic system to continuously monitor a patient’s vital signs during an operation under anesthesia and evaluate the patient’s physiological state. The proposed systems aims to employ statistical-based alarms, principal component analysis (PCA) together with respiratory associated arterial pressure variation (Pulse Pressure Variation-PPV and Systolic Pressure Variation-SPV) and a new fuzzy logic model to estimate the physiological state of the patient under anesthesia. The fuzzy approach will include the recursive fuzzy inference system (RFIS) which combines the current patient status data with the previous output of the inference system thereby reinforcing the current finding based on previous sequential outputs. In addition to this, work is also aimed at the creation of a wireless module that will provide patient information directly to the system.

"OPTIMISING CLASSIFIERS FOR THE DETECTION OF PHYSIOLOGICAL DETERIORATION IN PATIENT VITAL-SIGN DATA". In International Conference on Bio-inspired Systems and Signal Processing. SciTePress - Science and and Technology Publications, 2011. http://dx.doi.org/10.5220/0003138904250428.

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Lyons, Michael J., Daniel Kluender, Chi-Ho Chan e Nobuji Tetsutani. "Vital signs". In the SIGGRAPH 2003 conference. New York, New York, USA: ACM Press, 2003. http://dx.doi.org/10.1145/965400.965482.

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Rivera-Toral, Tonatiuh, Ruben Alejos-Palomares e M. C. Yuhsi Takahashi-Iturriaga. "Vital Signs Monitoring Through Internet". In 17th International Conference on Electronics, Communications and Computers (CONIELECOMP'07). IEEE, 2007. http://dx.doi.org/10.1109/conielecomp.2007.38.

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Gagarin, Ruthsenne, Gui Chao Huang, Ahmed Rabbi e Magdy F. Iskander. "Textile sensor for monitoring vital signs". In 2014 IEEE International Symposium on Antennas and Propagation & USNC/URSI National Radio Science Meeting. IEEE, 2014. http://dx.doi.org/10.1109/aps.2014.6904810.

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Payli, Birhan, Arjan Durresi, Deniz U. Dincer e Leonard Barolli. "Real-Time Monitoring of Vital Signs". In 2009 International Conference on Advanced Information Networking and Applications Workshops (WAINA). IEEE, 2009. http://dx.doi.org/10.1109/waina.2009.161.

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Rapporti di organizzazioni sul tema "Physiological and vital signs":

Backman, D. K. Integration of Instrumentation for Measuring Vital Signs. Fort Belvoir, VA: Defense Technical Information Center, ottobre 1992. http://dx.doi.org/10.21236/adb170000.

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Lohman, B., O. Boric-Lubecke, V. M. Lubecke, P. W. Ong e M. M. Sondhi. A Digital Signal Processor for Doppler Radar Sensing of Vital Signs. Fort Belvoir, VA: Defense Technical Information Center, ottobre 2001. http://dx.doi.org/10.21236/ada412597.

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Amacher, Michael C., Katherine P. O'Neil e Charles H. Perry. Soil vital signs: A new Soil Quality Index (SQI) for assessing forest soil health. Ft. Collins, CO: U.S. Department of Agriculture, Forest Service, Rocky Mountain Research Station, 2007. http://dx.doi.org/10.2737/rmrs-rp-65.

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Fehring, J. P. Reservoir vital signs monitoring, 1992: Bacteriological conditions in the Tennessee Valley. Fourth annual report. Office of Scientific and Technical Information (OSTI), maggio 1993. http://dx.doi.org/10.2172/10183537.

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Hade, Edward W., e James Sylvester. Testing and Evaluation of the Protocol Systems, Inc. PROPAQ 206 EL Enclore Vital Signs Patient Monitor. Fort Belvoir, VA: Defense Technical Information Center, luglio 1998. http://dx.doi.org/10.21236/ada357733.

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Bracewell, Jeff. Shoreline change at Padre Island National Seashore, Texas: 2017–2021 data summary. National Park Service, dicembre 2021. http://dx.doi.org/10.36967/nrr-2289824.

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In the spring of 2017, 2019, and 2021 the Gulf Coast Network collected shoreline position data at Padre Island National Seashore as a part of the NPS Vital Signs Monitoring Program. Monitoring was conducted following methods detailed in Monitoring Shoreline Position at Gulf Coast Network Parks: Protocol Implementation Plan (PIP; Bracewell 2017). Shoreline change was calculated using the Digital Shoreline Analysis System developed by USGS (Theiler et al. 2008). This report provides a summary of changes in shoreline position at Padre Island NS from May 2017 through May 2021.

Jiang, Qidong, e Tao Xu. Effect Of Adopting Low Calories On Patients' Vital Signs In The Nutritional Support Of Critically-Ill Patients In The ICU: A Systematic Review And Network Meta-Analysis. INPLASY - International Platform of Registered Systematic Review and Meta-analysis Protocols, dicembre 2022. http://dx.doi.org/10.37766/inplasy2022.12.0052.

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Baron, Lisa. Post-Dorian shoreline change at Cape Hatteras National Seashore: 2019 report. National Park Service, aprile 2021. http://dx.doi.org/10.36967/nrr-2282127.

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In 2018 and 2019 the Southeast Coast Network (SECN), with assistance from park staff, collected long-term shoreline monitoring data at Cape Hatteras National Seashore as part of the National Park Service (NPS) Vital Signs Monitoring Program. Monitoring was conducted following methods developed by the NPS Northeast Coastal and Barrier Network and consisted of mapping the high-tide swash line using a Global Positioning System unit in the spring of each year (Psuty et al. 2010). Shoreline change was calculated using the Digital Shoreline Analysis System (DSAS) developed by the United States Geological Survey (USGS; Himmelstoss et al. 2018). Following the same field methods used for monitoring long-term shoreline change, geospatial data were collected as part of the Hurricane Dorian (or Dorian) Incident Response from September 12–16, 2019. This report summarizes the post-Dorian data and the previous two shoreline data collection efforts (spring 2019 and fall 2018).

Dorsey, Achsah, Elissa M. Scherer, Randy Eckhoff e Robert Furberg. Measurement of Human Stress: A Multidimensional Approach. RTI Press, giugno 2022. http://dx.doi.org/10.3768/rtipress.2022.op.0073.2206.

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Stress is a multidimensional construct that comprises exposure to events, perceptions of stress, and physiological responses to stress. Research consistently demonstrates a strong association between stress and a myriad of physical and mental health concerns, resulting in a pervasive and interdisciplinary agreement on the importance of investigating the relationship between stress and health. Developing a holistic understanding of stress requires assessment of the three domains vital to the study of stress: (1) the presence of environmental stressors, (2) psychological and biological reactions to stressors, and (3) the length of time over which the stressor or stress response occurs. Research into all three domains requires multiple methods. Self-reports allow for subjective evaluations of stress that illuminate the duration and severity of the psychological response to stressors. Biomarkers, in turn, capture a more-objective measure of stress and create a deeper understanding of the biological response to chronic and acute stress. Finally, the use of digital biomarkers allows for further exploration of the physiological fluctuations caused by stress by measuring the changes occurring at the same time as the stressor. Future research on stress and health should favor a multidimensional approach that creates a triangulated picture of stress, drawing from each of the three aforementioned method groups.

Bracewell, Jeff. Shoreline change at Gulf Islands National Seashore, Florida and Mississippi: 2018–2021 data summary. National Park Service, marzo 2022. http://dx.doi.org/10.36967/nrr-2293103.

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In May and June 2018, and April 2021, the Gulf Coast Network (GULN) surveyed shoreline position at Gulf Islands National Seashore (GUIS) as a part of the NPS Vital Signs Monitoring Program. Monitoring was conducted following methods detailed in Monitoring Shoreline Position at Gulf Coast Network Parks: Protocol Implementation Plan (PIP; Bracewell 2017). Shoreline change was calculated using the Digital Shoreline Analysis System developed by USGS (Theiler et al. 2008). Key findings from this effort are as follows: In Florida, the mean shoreline change rate from 2018 to 2021 was -7.10 meters/year (-23.3 feet[ft]/year) with a standard deviation of 5.01 meters (16.4 ft) with approximately 95% of transects exhibiting landward retreat. In Mississippi, the mean change in island width from 2018 to 2021 was -7.46 meters/year (-24.5 ft/year) with a standard deviation of 12.49 meters (41.0 ft) with approximately 73% of transects exhibiting a loss in width. This project is in the early phases of implementation and will benefit from future surveys to better understand the influence of slight changes in survey timing and other environmental variations.