DIGITAL HEALTH最新文献

{"title":"VR-NRP: A development study of a virtual reality simulation for training in the neonatal resuscitation program.","authors":"Mustafa Yalin Aydin, Vernon Curran, Susan White, Lourdes Peña-Castillo, Oscar Meruvia-Pastor","doi":"10.1177/20552076251323989","DOIUrl":"https://doi.org/10.1177/20552076251323989","url":null,"abstract":"<p><strong>Objectives: </strong>Virtual reality (VR) offers the potential to provide a lifelike, safe, and interactive environment where healthcare providers can practice and refresh their skills. The Neonatal Resuscitation Program (NRP) is an evidence-based and standardized approach for training healthcare providers on the resuscitation of the newborn where VR can be applied. Here we describe a development study for a VR-NRP simulation. This contribution is relevant for researchers and developers in the health sector interested in the integration of VR and other extended reality (XR) technologies in medical education and training.</p><p><strong>Methods: </strong>For the implementation of the VR simulation, we used the Unity game engine, a VR-capable laptop, and an HTC Vive Pro Head-Mounted Display. We focused on the skill of positive pressure ventilation (PPV) using a bag and mask as the main scenario for the simulation since this is a foundational skill in NRP. To validate the prototype, we compared the VR-NRP simulation with 360° immersive VR videos in a crossover study involving 30 health-care providers and students, collecting various data through questionnaires and skill assessments by NRP instructors.</p><p><strong>Results: </strong>We described in detail the creation process by which a highly realistic VR simulation was produced reflecting the visual elements and sounds of a Neonatal Intensive Care Unit in a hospital setting. In the crossover study, we found both VR technologies were positively viewed by healthcare professionals and performed very similarly. However, the VR simulation provided a significantly increased feeling of presence. Participants found the VR simulation more useful and reported higher confidence in NRP skills such as proper mask placement and newborn response evaluation, reflecting improved experiential learning outcomes.</p><p><strong>Conclusion: </strong>This research represents a step forward in understanding how VR technologies can be developed and applied for effective, immersive medical training, increasing the availability of NRP refresher sessions, and providing insights into similar applications.</p>","PeriodicalId":51333,"journal":{"name":"DIGITAL HEALTH","volume":"11 ","pages":"20552076251323989"},"PeriodicalIF":2.9,"publicationDate":"2025-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11915296/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143659363","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Automated program using convolutional neural networks for objective and reproducible selection of corneal confocal microscopy images.","authors":"Qincheng Qiao, Wen Xue, Jinzhe Li, Wenwen Zheng, Yongkai Yuan, Chen Li, Fuqiang Liu, Xinguo Hou","doi":"10.1177/20552076251326223","DOIUrl":"https://doi.org/10.1177/20552076251326223","url":null,"abstract":"<p><strong>Objective: </strong>Diabetic peripheral neuropathy (DPN) is a common complication of diabetes, posing a significant risk for foot ulcers and amputation. Corneal confocal microscopy (CCM) is a rapid, noninvasive method to assess DPN by analysing corneal nerve fibre morphology. However, selecting high-quality representative images remains a critical challenge.</p><p><strong>Methods: </strong>In this study, we propose a fully automated CCM image-selection algorithm based on deep learning feature extraction using ResNet-18 and unsupervised clustering. The algorithm consistently identifies representative images by balancing non-redundancy and representativeness, ensuring objectivity and reproducibility.</p><p><strong>Results: </strong>When validated against manual selection by researchers with varying expertise levels, the algorithm demonstrated superior performance in distinguishing DPN and reduced inter-observer variability. It completed the analysis of hundreds of images within 1 s, significantly enhancing diagnostic efficiency. Compared with traditional manual selection, the proposed method achieved higher diagnostic accuracy for key morphological parameters, including corneal nerve fibre density, length, and branch density.</p><p><strong>Conclusion: </strong>The algorithm is open source and compatible with standard CCM workflows, offering researchers and clinicians a robust and efficient tool for DPN diagnosis. Further, multicentre studies are needed to validate these findings in diverse populations.</p>","PeriodicalId":51333,"journal":{"name":"DIGITAL HEALTH","volume":"11 ","pages":"20552076251326223"},"PeriodicalIF":2.9,"publicationDate":"2025-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11915551/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143658980","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Mental Health Staff's Views on Social Media Use Among People with Psychosis: A Cross-Sectional Survey.","authors":"Xiaolong Zhang, Natalie Berry, Sandra Bucci","doi":"10.1177/20552076251321059","DOIUrl":"https://doi.org/10.1177/20552076251321059","url":null,"abstract":"<p><strong>Objectives: </strong>The use of social media is prevalent in society; however, existing evidence is not sufficient to conclude whether the benefits of social media use can outweigh the risks for people with psychosis. In response to a recent call for staff to take a more active role in asking and advising service users about the impact of using social media platforms on their mental health in clinical practice, we sought to understand staff's attitudes toward service users with psychosis using social media in day-to-day life.</p><p><strong>Methods: </strong>A cross-sectional survey was disseminated from April 2018 to September 2020 in Mental Health Trusts in the Northwest of England.</p><p><strong>Results: </strong>A total of 155 staff completed the survey. We found that staff's social media use was high; however, as expected, social media was less used for communicating between staff and service users than other digital technologies (i.e., email and text messages). Moreover, staff's awareness of NHS Trust guidelines around communicating with service users via digital technology was limited.</p><p><strong>Conclusion: </strong>Despite staff views towards service user engagement with social media being mixed, as both benefits and concerns were reported, we need to ensure staff do not overestimate its risks or underestimate its benefits, so that they can offer tailored advice on social media use based on service users' individual circumstances.</p>","PeriodicalId":51333,"journal":{"name":"DIGITAL HEALTH","volume":"11 ","pages":"20552076251321059"},"PeriodicalIF":2.9,"publicationDate":"2025-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11915250/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143659351","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Recommendations for mobile apps for mental health treatment: Qualitative interviews with psychiatrists.","authors":"Harleen Gill, Catriona Hippman, Saskia Hanft-Robert, Lena Nugent, Ondřej Nováček, Mostafa M Kamel, Deirdre Ryan, Regina Demlová, Michael Krausz, Katarina Tabi","doi":"10.1177/20552076251325951","DOIUrl":"https://doi.org/10.1177/20552076251325951","url":null,"abstract":"<p><strong>Background: </strong>The number of mobile apps tailored for people living with mental health conditions has increased tremendously. However, the majority of the existing apps are not evidence-based and are being developed by teams without mental health expertise.</p><p><strong>Objective: </strong>We aimed to explore psychiatrists' perceptions of what they and their patients need in a mental health app and eventually inform the design of future mobile apps in this area.</p><p><strong>Methods: </strong>Semi-structured interviews were conducted with psychiatrists (<i>N </i>= 18) from three European countries: Austria, the Czech Republic, and Slovakia. Content analysis using inductive and deductive coding was used to analyze the interviews.</p><p><strong>Results: </strong>Four major themes were deductively identified: current system, gaps in the current system, recommendations for a mobile app, and promoting app use. Psychiatrists provided a comprehensive list of app features they suggested would be helpful. Of particular importance seemed to be enabling patients to self-monitor various aspects of their lives and including an emergency plan. Participants also emphasized that the app should be positive and motivating for patients to use, with some suggesting that users be able to communicate with other users for support. Within the theme of \"current system,\" a common topic was the current shortage of psychiatrists and the feelings of time pressure amongst existing psychiatrists.</p><p><strong>Conclusions: </strong>The results of this study can be used by software developers to inform future designs of mental health mobile apps, which will hopefully translate to a greater availability of evidence-based apps that address clinical needs.</p>","PeriodicalId":51333,"journal":{"name":"DIGITAL HEALTH","volume":"11 ","pages":"20552076251325951"},"PeriodicalIF":2.9,"publicationDate":"2025-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11915247/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143659353","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A double-edged sword?: Digitalization, health disparities, and the paradoxical case of e-pharmacy in Ghana.","authors":"Shamshad Khan, Naessiamba Eab-Aggrey","doi":"10.1177/20552076251326224","DOIUrl":"https://doi.org/10.1177/20552076251326224","url":null,"abstract":"<p><strong>Objective: </strong>With the ongoing push for greater digitalization of healthcare in low- and middle- income countries (LMICs), the larger questions around who will benefit most from such efforts and what elements of disparities and inequities may further be created or reinforced are often overlooked. This study was undertaken to assess a pioneering e-pharmacy initiative in Ghana that aimed to explore issues of access and disparities in relation to pharmaceutical services.</p><p><strong>Method: </strong>The study used a qualitative research design where semi-structured interviews were conducted virtually with 21 licensed community pharmacists recruited through purposive and snowball sampling techniques. The data were analyzed using inductive thematic analysis approach.</p><p><strong>Results: </strong>Pharmacists recognized the transformative potential of e-pharmacies, particularly in resource constrained regions that face issues of pharmacy and healthcare deserts. However, drawing on their experiential knowledge, they highlighted the paradoxes and challenges of promoting digitalization of healthcare in a country characterized by poor infrastructure, poverty, and multiple intersecting layers of inequities, as well as digital divides and low digital/health literacy. In the absence of adequate infrastructure, funding support and regulation, the possibility of local pharmacies, often the first point of care, being replaced by big corporations was feared. Participants also cautioned to steer the discourse of e-pharmacy away from access, pricing, and convenience to safety and quality.</p><p><strong>Conclusion: </strong>Digitalization of healthcare and e-pharmacies holds tremendous potential in the LMICs. However, such technological initiatives, if implemented without proper groundwork and adequate support, would run the risk of creating and exacerbating health disparities, especially in sub-Saharan Africa. A bottom-up approach, through grassroot engagement and implementation science, tethered to building safe, affordable, and equitable infrastructure and access to care will be essential for the success of e-pharmacy and other digitalization initiatives in the region and beyond. This research has direct implications for public health, policy, and pharmaceutical care.</p>","PeriodicalId":51333,"journal":{"name":"DIGITAL HEALTH","volume":"11 ","pages":"20552076251326224"},"PeriodicalIF":2.9,"publicationDate":"2025-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11915244/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143658771","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Criterion validity of a newly developed Apple Watch app ('MVPA') compared to the native Apple Watch 'activity' app for measuring criterion moderate intensity physical activity.","authors":"Ashley Warner, Natalie Vanicek, Amanda Benson, Tony Myers, Grant Abt","doi":"10.1177/20552076251326225","DOIUrl":"https://doi.org/10.1177/20552076251326225","url":null,"abstract":"<p><strong>Introduction: </strong>Many people fail to meet physical activity guidelines. One possible solution is wearable technology. Yet it is unclear if popular devices such as the Apple Watch can accurately measure intensity, which is a cornerstone of physical activity guidelines. We developed a bespoke Apple Watch app based on the use of relative intensity (%HRR), with the aim to determine if the bespoke app measures 'moderate' intensity more accurately compared to the native Apple Watch Activity app, using % oxygen consumption reserve (%VO₂R) as the criterion.</p><p><strong>Methods: </strong>Seventy-four participants (18-65 years) attended the laboratory twice. During Visit 1, they completed medical screening, and measurements of resting heart rate, maximal oxygen consumption, and maximal heart rate on a motorised treadmill. During Visit 2, participants completed 5-minute treadmill bouts starting at 3.5 km.h^-1, increasing by 0.5 km.h^-1 until the bespoke app recorded 3 minutes at ≥40%HRR, and the native app recorded 5 minutes of 'exercise'. Oxygen consumption and heart rate were recorded. Bayesian posterior distributions were used to compare the two apps.</p><p><strong>Results: </strong>At the walking speed that the native app recorded exercise, the mean (95% HDI) %VO₂R was 33 (31-36)%, which is below moderate relative intensity (40%HRR). This is compared to a mean (95% HDI) of 43 (40-44)% for our bespoke app.</p><p><strong>Conclusion: </strong>The bespoke app measured relative moderate intensity more accurately compared to the native app when compared to the %VO₂R criterion. Exercise guidelines and wearable devices should incorporate relative measures of physical activity to better individualise monitoring and prescription.</p>","PeriodicalId":51333,"journal":{"name":"DIGITAL HEALTH","volume":"11 ","pages":"20552076251326225"},"PeriodicalIF":2.9,"publicationDate":"2025-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11915541/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143659236","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Transforming healthcare with chatbots: Uses and applications-A scoping review.","authors":"Marina Barreda, David Cantarero-Prieto, Daniel Coca, Abraham Delgado, Paloma Lanza-León, Javier Lera, Rocío Montalbán, Flora Pérez","doi":"10.1177/20552076251319174","DOIUrl":"https://doi.org/10.1177/20552076251319174","url":null,"abstract":"<p><strong>Purpose: </strong>The COVID-19 pandemic has intensified the demand and use of healthcare resources, prompting the search for efficient solutions under budgetary constraints. In this context, the increasing use of artificial intelligence and telemedicine has emerged as a key strategy to optimize healthcare delivery and resources. Consequently, chatbots have emerged as innovative tools in various healthcare fields, such as mental health and patient monitoring, offering therapeutic conversations and early interventions. This systematic review aims to explore the current state of chatbots in the healthcare sector, meticulously evaluating their effectiveness, practical applications, and potential benefits.</p><p><strong>Methods: </strong>This systematic review was conducted following PRISMA guidelines, utilizing three databases, including PubMed, Web of Science, and Scopus, to identify relevant studies on the use and cost of chatbots in health over the past 5 years.</p><p><strong>Results: </strong>Several articles were identified through the database search (<i>n</i> = 31). The chatbot interventions were categorized by similar types. The reviewed articles highlight the diverse applications of chatbot interventions in healthcare, including mental health support, medical information, appointment management, health education, lifestyle changes, and COVID-19 management, demonstrating significant potential across these areas.</p><p><strong>Conclusion: </strong>Furthermore, there are challenges regarding the implementation of chatbots, compatibility with other systems, and ethical considerations that may arise in different healthcare settings. Addressing these issues will be essential to maximize the benefits of chatbots, mitigate risks, and ensure equitable access to these health innovations.</p>","PeriodicalId":51333,"journal":{"name":"DIGITAL HEALTH","volume":"11 ","pages":"20552076251319174"},"PeriodicalIF":2.9,"publicationDate":"2025-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11915287/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143659360","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Users' perspectives about challenges of using telemedicine for patient with diabetes during the COVID-19 pandemic.","authors":"Fatemeh Mirasghari, Haleh Ayatollahi, Farnia Velayati","doi":"10.1177/20552076251325969","DOIUrl":"https://doi.org/10.1177/20552076251325969","url":null,"abstract":"<p><strong>Purpose: </strong>Telemedicine services have been recognized as a safe and affordable method for providing continuous healthcare services, especially to patients with chronic diseases. Despite all advantages, the use of this technology has faced several challenges particularly during COVID-19. The aim of this study was to investigate physicians' and patients' with diabetes perspectives about challenges of using telemedicine during the COVID-19 pandemic.</p><p><strong>Methods: </strong>This survey study was conducted in 2023. The participants were endocrinologists, internal medicine specialists, general practitioners (GPs), and patients with diabetes in five teaching hospitals located in one of the underprivileged areas in Iran. Data were collected using a 5-point Likert-scale questionnaire and analyzed using descriptive statistics and the Kruskal-Wallis test.</p><p><strong>Results: </strong>In this study, 95 questionnaires were completed by 60 patients with diabetes (30%), 21 GPs (70%), 10 internal medicine specialists (66.6%), and 4 endocrinologists (80%). The results showed that technical (4.42 ± 0.57), clinical (4.25 ± 0.52), organizational (4.23 ± 0.56), and individual (4.02 ± 0.42) challenges were the most important challenges, respectively. However, there was a statistically significant difference between the perspectives of the specialists, GPs, and patients with diabetes in terms of individual, clinical, technical, and organizational challenges.</p><p><strong>Conclusions: </strong>Since the use of telemedicine for patients with diabetes faced several challenges during the COVID-19 pandemic, it is necessary to consider practical solutions to overcome these challenges in order to improve quality of services and increase the use of this technology, particularly in underprivileged areas. Moreover, the effectiveness of these services in different contexts, and for people with different economic conditions should be investigated in the future.</p>","PeriodicalId":51333,"journal":{"name":"DIGITAL HEALTH","volume":"11 ","pages":"20552076251325969"},"PeriodicalIF":2.9,"publicationDate":"2025-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11915245/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143659361","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Virtually assisted home rehabilitation after acute stroke (VAST-rehab): A descriptive pilot study for young and underserved stroke survivors.","authors":"Emily A Stevens, Neha Muraly, Carolyn P Da Silva, Lorie Richards, Aylen Sosa, Heather Smith, Allyson Seals Richard, Shehzeen Manji, Mary E Russell, Sean I Savitz","doi":"10.1177/20552076251324443","DOIUrl":"https://doi.org/10.1177/20552076251324443","url":null,"abstract":"<p><strong>Introduction: </strong>The objective of <i>Virtually Assisted home rehabilitation after acute STroke</i> was to offer a fully remote telerehabilitation intervention to stroke survivors during the COVID-19 pandemic.</p><p><strong>Methods: </strong>Participants were recruited from acute care, inpatient rehab, or provider/self-referral if they had a stroke within the previous year, prestroke modified Rankin Scale < 3, were recommended to participate in rehab, and had internet access. Exclusions were: prior injury/diagnoses that impacted functional level, life expectancy of less than six months, or safety concerns. Outcomes were within one week prior to initiation and within one week after completion of telerehabilitation sessions. Video call sessions were completed 1-2 times a week for 12 weeks. Occupational therapy, physical therapy, and/or speech therapy were provided. Analyses involved descriptive statistics; qualitative comments were aggregated and analyzed for broader themes. Twenty participants were consented.</p><p><strong>Results: </strong>Of the 20 participants (39-71 years old, 35% White, 50% female), 12 completed study activities, five completed exit interview; 10 demonstrated improvement on National Institute of Health Stroke Scale from a mean of 5.6 at baseline to 2.7 at end of study, six demonstrated improvement in modified Rankin Score and EuroQol (EQ-5D-5L) scores from a mean of 2.8 to 1.9 and 13.3 to 9.3, respectively, and five demonstrated an increase above the minimally clinically important difference (mean change = 5) on Montreal Cognitive Assessment. On the Stroke Impact Scale rating of total recovery, six of the 12 scored themselves with improvement (mean change = 18.2). Exit interview data revealed an emerging theme: while in-person therapy was preferred, telerehabilitation was an important resource for those without access to in-person therapy.</p><p><strong>Conclusion: </strong>Our study adds to the growing data on the practice of telerehabilitation for survivors of stroke. Future studies are underway to address telerehabilitation serving the uninsured, underinsured, and populations in rural areas.</p><p><strong>Clinicaltrialsgov id: </strong>NCT05659784.</p>","PeriodicalId":51333,"journal":{"name":"DIGITAL HEALTH","volume":"11 ","pages":"20552076251324443"},"PeriodicalIF":2.9,"publicationDate":"2025-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11915546/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143659362","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Defining the physiological bounds of left ventricular ejection time with a wireless, wearable ultrasound: An analysis of over 137,000 cardiac cycles.","authors":"Lisa M Hofer, Jon-Émile S Kenny, Chelsea E Munding, Isabel Kerrebijn, Sarah Atwi, Aarron Younan, Joseph K Eibl","doi":"10.1177/20552076251323838","DOIUrl":"https://doi.org/10.1177/20552076251323838","url":null,"abstract":"<p><strong>Background: </strong>Flow time (FT) or the left ventricular ejection time (LVET) is the duration of mechanical systole, when the aortic valve is open and ejecting blood. LVET can be measured in the common carotid artery from the time of the systolic upstroke to the incisural notch. FT is directly related to stroke volume (SV) and therefore has important implications for inpatient and outpatient cardiovascular care. Despite this known relationship between FT (i.e., LVET) and SV, large patient datasets describing the distribution and physiological bounds of FT are lacking.</p><p><strong>Methods: </strong>Using a wearable, continuous-wave Doppler ultrasound patch, we are amassing a database of cardiac cycles from the common carotid Doppler pulse in patients and healthy volunteers performing various preload challenges.</p><p><strong>Results: </strong>From this dataset of over 137,000 measurements in 347 patients, we report the mean and distributions of the common carotid artery flow time (i.e., LVET) corrected for heart rate using several prevailing equations.</p><p><strong>Conclusions: </strong>Our findings are the most extensive exploration of the physiological bounds of FT (i.e., LVET) and are useful in both clinical assessments of cardiac health and various algorithm detection applications.</p>","PeriodicalId":51333,"journal":{"name":"DIGITAL HEALTH","volume":"11 ","pages":"20552076251323838"},"PeriodicalIF":2.9,"publicationDate":"2025-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11915234/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143659426","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}