Prehospital and Disaster Medicine最新文献

{"title":"Choosing the Right Measure of Effect: Guidance for Authors Reporting Binary Outcomes.","authors":"Jeffrey Michael Franc","doi":"10.1017/S1049023X26108954","DOIUrl":"10.1017/S1049023X26108954","url":null,"abstract":"<p><p>When reporting differences in the incidence or proportion of a binary outcome between groups, common measures include absolute risk difference, relative risk (RR), and odds ratio (OR). For studies in which the primary outcome is a difference in proportions between two groups, <i>Prehospital and Disaster Medicine</i> prioritizes the absolute risk difference as the principal measure of effect, accompanied by a 95% confidence interval and P-value. Relative risk may be reported secondarily when appropriate. Odds ratios should generally be avoided as they are frequently misinterpreted and may exaggerate the apparent magnitude of an effect. Odds ratios should be limited to situations in which they are required by the selected statistical method.</p>","PeriodicalId":20400,"journal":{"name":"Prehospital and Disaster Medicine","volume":"41 1","pages":"e13"},"PeriodicalIF":4.1,"publicationDate":"2026-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148437642","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"From Video Contact to Visual Modeling: Rethinking Dispatcher-Assisted CPR for Untrained Lay Rescuers.","authors":"Rizky Andana Pohan, Santy Andrianie, Putri Angelina Br Ginting, Carolina Retmawati Putri, Nira Prihatin Nufus, Kadek Suhardita","doi":"10.1017/S1049023X2610898X","DOIUrl":"10.1017/S1049023X2610898X","url":null,"abstract":"<p><strong>Backgrounds: </strong>Dispatcher-guided cardiopulmonary resuscitation (CPR) via video calls represents an important shift from purely verbal instruction to real-time visual modeling for untrained bystanders during out-of-hospital cardiac arrest. This approach may improve compression depth, rhythm, overall CPR quality, and reduce interruptions.</p><p><strong>Problems: </strong>Its implementation remains challenging because voice calls may be faster, whereas video guidance requires stable connectivity, smartphone access, digital literacy, appropriate camera positioning, and trained dispatchers. Moreover, simulation findings among young university students may not reflect real emergency conditions.</p><p><strong>Conclusion: </strong>Video-assisted CPR should be developed as a hybrid, equitable, low-bandwidth intervention and tested pragmatically across diverse emergency systems.</p>","PeriodicalId":20400,"journal":{"name":"Prehospital and Disaster Medicine","volume":"41 1","pages":"e12"},"PeriodicalIF":4.1,"publicationDate":"2026-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148437628","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Non-Resuscitative Telecommunicator-Assisted First Aid: A Scoping Review.","authors":"Alexei A Birkun, Matthew J Douma","doi":"10.1017/S1049023X26108942","DOIUrl":"10.1017/S1049023X26108942","url":null,"abstract":"<p><strong>Introduction: </strong>The provision of instant telephone pre-arrival instructions (PAI) on first aid to laypeople by emergency services' telecommunicators for conditions beyond cardiac arrest, such as trauma or acute coronary syndrome, is practiced by emergency services around the world and is recognized by some prehospital systems as a standard of care. However, to the best of the authors' knowledge, no attempts have been made to date to systematically summarize the related research evidence.</p><p><strong>Study objective: </strong>The aim of this study was to systematically map and analyze published quantitative research on telecommunicator-assisted first aid (TAFA) for medical emergencies other than cardiac arrest.</p><p><strong>Methods: </strong>Peer-reviewed journal papers reporting original quantitative data on experimental or real-world applications of TAFA were identified through PubMed, Scopus, and Google Scholar. Studies focusing solely on cardiac arrest management (cardiopulmonary resuscitation [CPR] or automated external defibrillation) were excluded. A scoping review of eligible papers was conducted in accordance with the PRISMA-ScR guidance.</p><p><strong>Results: </strong>Twenty-two studies published from 2000 through 2024 met inclusion criteria. First authors represented nine high-income countries. The studies investigated hypothetical or actual application of TAFA for anaphylaxis, chest pain or myocardial infarction, stroke, trauma, bleeding, childbirth, foreign body airway obstruction, opioid overdose, and respiratory arrest; four studies did not specify the type of emergency. Eight studies (36.4%) analyzed real Emergency Medical Services (EMS) call data, another eight (36.4%) were simulation-based, five (22.7%) used surveys, and one (4.5%) represented a cost-effectiveness analysis. The studies described existing TAFA practices, evaluated expectations and perceptions of the service by the public, demonstrated the feasibility of experimental techniques, including video communication, and identified areas for future investigations and interventions. Along with some beneficial effects of TAFA, several studies have demonstrated downsides of the practice, including suboptimal dispatcher adherence to pre-arrival protocols. The relationships between the real-world application of TAFA and patient outcomes are unclear.</p><p><strong>Conclusion: </strong>According to the review of quantitative research, non-resuscitative TAFA remains an under-explored area of prehospital medicine. Considering the paucity and the inconclusiveness of available evidence, significantly more research is required to better understand its effects and practical implications. The evidence map generated by this scoping review may assist the professional community in advancing the development of non-resuscitative TAFA.</p>","PeriodicalId":20400,"journal":{"name":"Prehospital and Disaster Medicine","volume":"41 1","pages":"e11"},"PeriodicalIF":4.1,"publicationDate":"2026-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148318805","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Capacity-Responsive COVID-19 Testing Performance in Emergency Departments: Turnaround Time Thresholds for Lateral Flow Assay and Polymerase Chain Reaction Strategies.","authors":"Cheng-Han Chen, Yi-Tzu Lee, Li-Hua Li, Teh-Fu Hsu, Chorng-Kuang How, Chao-Min Cheng","doi":"10.1017/S1049023X26108930","DOIUrl":"10.1017/S1049023X26108930","url":null,"abstract":"<p><strong>Background: </strong>During the coronavirus disease 2019 (COVID-19) pandemic, emergency departments (EDs) faced unprecedented operational stress compounded by mandatory testing requirements that directly influenced patient flow and length-of-stay (LOS). Two testing modalities were central to pandemic ED operations: (1) rapid point-of-care lateral flow assays (LFAs), which return results in minutes but depend on frontline ED personnel and space, and (2) laboratory-based polymerase chain reaction (PCR), which requires sample transport and centralized processing but functions independently of ED capacity. Whether the relative performance of these modalities remains robust under varying ED operational pressures is unclear.</p><p><strong>Methods: </strong>This retrospective observational study analyzed 31,737 COVID-19 testing encounters (11,098 LFA; 20,639 PCR) during the 11-month dual-testing period (May 2022-March 2023) at a high-volume tertiary ED, when both modalities were concurrently deployed. Propensity score matching (PSM; 1:1 nearest-neighbor, caliper 0.5 SD) generated 8,492 well-balanced LFA-PCR pairs. Turnaround time (TAT) was evaluated as an operational stress indicator modifying the association between testing modality and ED LOS. Variability analyses assessed performance stability under differing capacity levels.</p><p><strong>Results: </strong>Overall, LFA was associated with longer LOS than PCR (median 8.3 versus 5.8 hours; P < 0.001). Under low-stress conditions (TAT ≤30 minutes), this difference was modest (median difference 1.5 hours; 95% CI, 0.80 to 2.07). As TAT increased, modality performance diverged substantially. At TAT >90 minutes, LOS difference increased to 3.6 hours (95% CI, 2.85 to 4.42). Threshold inflection occurred between 60-90 minutes. Lateral flow assays exhibited higher operational variability (CV ratio 2.09; 95% CI, 1.25 to 3.12), with the greatest instability during high-volume periods, while PCR performance remained comparatively stable across stress levels. Stratified analyses were exploratory; confidence intervals were not adjusted for multiplicity.</p><p><strong>Conclusion: </strong>Turnaround time and its variability serve as actionable, real-time indicators of ED system capacity. Lateral flow assay performance degrades progressively under operational strain due to its reliance on frontline ED resources, whereas PCR-supported by external laboratory infrastructure-maintains more stable throughput. Capacity-contingent, adaptive testing strategies that shift toward PCR as TAT rises may enhance ED resilience, reduce LOS, and support more predictable patient flow during future outbreaks and surge conditions.</p>","PeriodicalId":20400,"journal":{"name":"Prehospital and Disaster Medicine","volume":"41 1","pages":"e10"},"PeriodicalIF":4.1,"publicationDate":"2026-06-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148259350","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"MARS E-ECG: Prehospital Electrocardiogram Teletransmission by Firefighter Rescuers: A Retrospective Pilot Study within a Physician-Based EMS System.","authors":"Julien Galant, Mathilde Corbu, Nicolas Cazes, Simon Pierre Corcostegui, Emilien Montaigu, Aurélien Renard","doi":"10.1017/S1049023X26108929","DOIUrl":"10.1017/S1049023X26108929","url":null,"abstract":"<p><strong>Introduction: </strong>Prehospital electrocardiogram teletransmission (E-ECG) enables early cardiac diagnosis and triage in the field. This study assessed its diagnostic and operational impact in a real-world Emergency Medical Service (EMS) in Marseille, France.</p><p><strong>Methods: </strong>A retrospective, single-center observational study including adults ≥18 years who underwent E-ECG acquisition by Marseille first responders from January 1 through September 15, 2023 was conducted. Electronically transmitted prehospital ECGs were transmitted via <i>Schiller</i> devices to medical regulators. Patients with trauma, pediatric age, pregnancy, training cases, uninterpretable ECGs, or incomplete files were excluded. The main outcome was the proportion of acute ECG abnormalities (signs of ischemia, rhythm, or conduction disorders).Secondary outcomes included reinforcement requests, patient orientation, and transport mode.</p><p><strong>Results: </strong>Among 425 included patients (Median age: 56 years [IQR 40-72]; 61% male), 21.9 % (n = 93) presented abnormal ECGs, including 2.1% with ST-elevation myocardial infarction (STEMI). Transmission results led to management changes in 11.5% of cases (n = 49): 8.2% required additional medical reinforcement and 3.3% underwent direct cardiology triage without medical reinforcement. Technical issues occurred in 15.8% of transmissions (n = 67).</p><p><strong>Conclusion: </strong>Prehospital ECG teletransmission allowed early detection of cardiac abnormalities and was associated with changes in patient management in a subset of cases. Its integration in emergency workflows could enhance triage, optimize cardiology routing, and strengthen coordination between field teams and regulation centers.</p>","PeriodicalId":20400,"journal":{"name":"Prehospital and Disaster Medicine","volume":"41 1","pages":"e9"},"PeriodicalIF":4.1,"publicationDate":"2026-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148043498","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Evaluating Nursing Students' Performance and Retention of BLS/AED Knowledge and Skills One Year After Training: A Randomized Controlled Trial.","authors":"Charalampos Leventis, Angeliki Bistaraki, Michael Igoumenidis, Anastasios Tzenalis, Panagiotis Kiekkas, John Lakoumentas, Christos Marneras, Nikos Stefanopoulos","doi":"10.1017/S1049023X26108917","DOIUrl":"10.1017/S1049023X26108917","url":null,"abstract":"<p><strong>Introduction: </strong>Nurses often serve as the initial responders in cases of cardiac arrest, making cardiopulmonary resuscitation (CPR) competence essential to effective resuscitation. It is therefore important for nursing students to possess sufficient CPR knowledge and skills for future clinical practice.</p><p><strong>Objective: </strong>The aim of this study was to examine whether CPR post-qualification training is needed in maintaining knowledge and skills and if face-to-face or online training is more effective as an educational method in preserving CPR knowledge and skills in nursing students.</p><p><strong>Methods: </strong>A three-group, parallel randomized-controlled, single-blind design was used. The participants were 133 nursing students, randomly assigned to the face-to-face group (n = 43), the e-learning group (n = 43), and the control group (n = 47). Before randomization, all participants (n = 133) successfully completed the European Resuscitation Council (ERC) standard five-hour Basic Life Support/Automated External Defibrillation (BLS/AED) course (t0) and a questionnaire based on the 2021 ERC Guidelines to assess their knowledge. Six months later, Group A received face-to-face training, Group B received e-learning training, and Group C had no intervention. Six months after interventions, all participants (n = 133) were re-assessed on the same questionnaire, and they were given the same scenario of cardiopulmonary arrest that was used during the initial BLS course to assess the skills that they retained (t1) with the use of the ERC CPR/AED 11-item checklist. The collected data were analyzed with inferential \"among group\" analysis involving Kruskal-Wallis's and Pearson's Chi-Squared test and inferential \"within group\" analysis including Wilcoxon's Signed-Rank and McNemar's test. Multiple linear regression was used for adjusting demographic characteristics.</p><p><strong>Results: </strong>Based on pairwise differences between independent groups, both intervention groups presented higher scores in knowledge at t1 (P < 0.001) and in skills at t1 (P < 0.001) compared to the control group. Moreover, both training methods demonstrated comparable effectiveness. Based on comparisons between paired groups, there was also a statistically significant decrease in the Skill Score in the control group after one year (P < 0.001). Most skills were notably higher, primarily in the e-learning group, and to a lesser extent in the face-to-face group. In specific, intervention groups demonstrated statistically significant improvement in nine of the eleven assessed skills (all P < 0.05).</p><p><strong>Conclusion: </strong>The current study showed that post-qualification training is needed to retain CPR knowledge and skills of nursing students, and that face-to-face and e-learning training had similar outcomes.</p>","PeriodicalId":20400,"journal":{"name":"Prehospital and Disaster Medicine","volume":"41 1","pages":"e8"},"PeriodicalIF":4.1,"publicationDate":"2026-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147988857","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Modified Rapid Needs Assessments in Nebraska (USA) Following the 2024 Arbor Day Tornado.","authors":"Sarah E Scales, Rachael L Birn, Terra Uhing, Robert Ball, Caleb Kuddes, Justin Frederick, Kristina W Kintziger","doi":"10.1017/S1049023X26108899","DOIUrl":"10.1017/S1049023X26108899","url":null,"abstract":"<p><p>Standard Community Assessment for Public Health Emergency Response (CASPER) methods, a type of rapid needs assessment (RNA) for collecting data on household needs and impacts following emergencies, are not always suitable for rural, destroyed, or severely damaged communities, or disasters affecting small geographical areas. The objectives of this modified RNA were to: (1) identify the strengths, limitations, and operational challenges for utilization of modified RNAs for post-disaster, quick response research; and (2) capture the acute mental and physical health impacts and lived experiences of communities affected by the 2024 Arbor Day tornado in Nebraska (USA). This field study tested modifications of the CASPER methodology in rural and inaccessible communities in Washington and Douglas County, Nebraska following the 2024 Arbor Day tornado. A 60-item survey was developed using validated questions, including on mental and physical health impacts. Survey completion rates for Washington and Douglas Counties were 57.3% and 89.3%, respectively. Exacerbation of existing conditions, worsening allergies, and stress were commonly reported following the tornado. Modified RNAs were useful and feasible approaches for capturing perishable data following the 2024 Arbor Day tornado outbreak. These findings can be used to inform not only public health response but also future planning and policy.</p>","PeriodicalId":20400,"journal":{"name":"Prehospital and Disaster Medicine","volume":"41 1","pages":"e7"},"PeriodicalIF":4.1,"publicationDate":"2026-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147974788","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Trends in the Application of Invasive Prehospital Interventions by Paramedics: A Six-Year Descriptive Analysis of the German Emergency Medical Services System.","authors":"Steffen Nix, Christian Hohenstein","doi":"10.1017/S1049023X26108887","DOIUrl":"10.1017/S1049023X26108887","url":null,"abstract":"<p><strong>Background: </strong>The Emergency Paramedic Act (EPA; Notfallsanitätergesetz), implemented in 2014, expanded the legal authority of German paramedics to independently perform defined invasive and pharmacological interventions under specific conditions. However, real-world implementation of these competencies within the physician-based German Emergency Medical Services (EMS) system remains insufficiently described.</p><p><strong>Objective: </strong>The aim of this study was to evaluate the frequency, type, temporal development, and regional variation of invasive and pharmacological/therapeutic interventions performed independently by paramedics over a six-year period.</p><p><strong>Methods: </strong>A retrospective, descriptive multicenter analysis of digital EMS documentation was conducted across three districts in Saxony, Germany, from January 1, 2019 through December 31, 2024. All missions were screened (n = 197,842). Paramedic-led missions without physician presence were included; physician-attended missions and non-emergency interfacility transports were excluded. Interventions were classified according to the 2024 Federal Association of Medical Directors of EMS competency catalogue. Frequencies were analyzed by year and district. Temporal trends were assessed using the Mann-Kendall test, and regional differences were explored using one-way ANOVA with Tukey HSD post hoc testing. All inferential analyses were exploratory.</p><p><strong>Results: </strong>Of 197,842 missions, 156,417 (79.1%) were paramedic-led without physician presence. Invasive procedures occurred in 7.6% of missions and were predominantly peripheral intravenous (IV) access (5.7%). Advanced airway management and intraosseous (IO) access were rare (<0.1%). Pharmacological/therapeutic administrations occurred in 11.3% of missions and increased from 9.4% in 2019 to 12.1% in 2024 (Mann-Kendall test), whereas overall invasive procedure rates remained stable.</p><p><strong>Conclusion: </strong>Ten years after implementation of the EPA, invasive and pharmacological interventions performed independently by German paramedics remain relatively infrequent and largely confined to basic measures. Advanced procedures are rarely applied, reflecting continued structural characteristics of the physician-based EMS model.</p>","PeriodicalId":20400,"journal":{"name":"Prehospital and Disaster Medicine","volume":"41 1","pages":"e6"},"PeriodicalIF":4.1,"publicationDate":"2026-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147974744","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effects of Transport Method and Transport Time on Outcomes of Trauma Patients at an Urban Level-1 Trauma Center.","authors":"Stephen Roche, Kailey Davis, Hance Wilbert, Maxwell Todd, Heidi Israel, Vicki Moran, Christopher Behr","doi":"10.1017/S1049023X26108905","DOIUrl":"10.1017/S1049023X26108905","url":null,"abstract":"<p><strong>Introduction: </strong>Appropriate, evidence-based care of traumatically injured patients in the prehospital setting is essential to saving lives and yielding better outcomes. There exists mixed evidence on the outcome differences between ambulance and helicopter prehospital transport, and on the effects of transport time on outcomes. The purpose of this paper is to examine these in patients presenting to an urban Level-1 trauma center.</p><p><strong>Methods: </strong>A retrospective analysis was conducted with three years of patient information from a trauma registry maintained by a Level-1 trauma center in St. Louis, Missouri (USA). Propensity matching was used to compare helicopter versus ground ambulance outcomes, while regression analysis was used to investigate transport time.</p><p><strong>Results: </strong>After propensity matching to injury severity, helicopter transport was associated with improved prehospital survival (OR = 4.1; [95% CI, 1.2-21]; P = 0.02), though no difference in in-hospital survival (OR = 0.9; [95% CI, 0.4-1.8]; P = 0.71), intensive care unit (ICU) stay (difference = 0.8 days; [95% CI, -0.9-2.5]; P = 0.36), or hospital length-of-stay (difference = 51 hours; [95% CI, -7-109]; P = 0.08). Decreased transport time was not associated with increased survival (P = 0.31), but when transport times were less than 30 minutes, further reductions were significantly associated with shorter hospital stays (r² = 0.02; P = 0.05) and fewer ICU days (r² = 0.02; P = 0.05).</p><p><strong>Conclusions: </strong>Decreased injury to hospital arrival time and increased use of helicopter transport in specific situations may improve patient outcomes; this indicates the need for prospective studies.</p>","PeriodicalId":20400,"journal":{"name":"Prehospital and Disaster Medicine","volume":"41 1","pages":"e5"},"PeriodicalIF":4.1,"publicationDate":"2026-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147875474","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effectiveness of Video Call-Assisted Versus Voice Call-Assisted Dispatcher-Guided CPR in Untrained Laypersons: A Randomized Simulation Study.","authors":"Adem Koksal, Mehmet Seyfettin Saribas, Mesut Tomakin, Yusuf Burak Kalafat, Ibrahim Caltekin, Ali Aygun","doi":"10.1017/S1049023X26108875","DOIUrl":"10.1017/S1049023X26108875","url":null,"abstract":"<p><strong>Introduction: </strong>Out-of-hospital cardiac arrest (OHCA) remains a major cause of mortality world-wide. Early bystander cardiopulmonary resuscitation (CPR) is a critical determinant of survival; however, many witnessed arrests are managed by untrained laypersons. Dispatcher-assisted CPR (DA-CPR) increases bystander intervention rates, but telephone-based guidance limits real-time assessment of compression quality. Video-assisted CPR (V-CPR) may overcome these limitations by enabling visual feedback and demonstration-based guidance.</p><p><strong>Study objective: </strong>The aim of this study was to evaluate whether video call-assisted dispatcher guidance incorporating simultaneous real-time demonstration improves CPR performance quality compared with voice call-assisted guidance in untrained laypersons during a simulated adult OHCA scenario.</p><p><strong>Methods: </strong>This prospective, randomized, single-blind, manikin-based trial included 85 university students without prior CPR training. Participants were randomized to telephone-assisted CPR (T-CPR; n = 40) or video-assisted CPR (V-CPR; n = 45). All participants performed standardized hands-only CPR for five minutes following dispatcher instructions. In the V-CPR group, the dispatcher simultaneously demonstrated CPR on a manikin during the video call. The primary outcome was the composite CPR Quality Score generated by the manikin feedback system. Secondary exploratory outcomes included compression depth, compression rate, interruption time, and Emergency Medical Services (EMS)-related time intervals. Robust regression analysis adjusted for age, sex, dominant hand, height, and weight was performed.</p><p><strong>Results: </strong>The mean age of participants was 20.13 (SD = 1.81) years, and 54.1% were female. The CPR Quality Score was significantly higher in the V-CPR group than in the T-CPR group (median difference -47; 95% CI, -60 to -36; P < .001). The V-CPR group demonstrated greater mean compression depth, higher proportions of compressions within recommended rate and depth ranges, and shorter interruption times between compressions. The T-CPR group showed shorter time from case recognition to EMS call, while the interval from dispatcher contact to CPR initiation was similar between groups. In multivariable robust regression analysis, allocation to the V-CPR group remained independently associated with higher CPR Quality Score and improved compression performance metrics.</p><p><strong>Conclusion: </strong>Video call-assisted dispatcher guidance incorporating simultaneous real-time visual demonstration significantly improves CPR quality in untrained lay rescuers compared with voice-only guidance. These findings suggest that structured visual modeling integrated into DA-CPR systems may enhance bystander resuscitation performance and help bridge gaps in community CPR training.</p>","PeriodicalId":20400,"journal":{"name":"Prehospital and Disaster Medicine","volume":"41 1","pages":"e4"},"PeriodicalIF":4.1,"publicationDate":"2026-04-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147623481","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}