Video call-assisted dispatcher guidance improves CPR quality metrics in simulation study of untrained studentsCan a video call help someone save a life when they've never learned CPR?

Prehospital and disaster medicine Published April 6, 2026 Study authors: Koksal Adem, Saribas Mehmet Seyfettin, Tomakin Mesut, Kalafat Yusuf Burak, Caltekin Ibrahim, Aygun A… PubMed ↗ DOI ↗ Editorial oversight: Dr. Lars van Dijk, PhD · Surgical, Procedural & Diagnostic

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Key Takeaway

Consider that video-assisted dispatcher CPR guidance improved simulation metrics but requires real-world validation.

This randomized, single-blind trial evaluated video call-assisted dispatcher guidance (V-CPR) versus telephone guidance (T-CPR) for bystander CPR in a simulated adult out-of-hospital cardiac arrest scenario. The study enrolled 85 university students without prior CPR training who performed 5 minutes of CPR on manikins. The primary outcome was a composite CPR Quality Score generated by the manikin feedback system.

V-CPR significantly improved the composite CPR Quality Score compared to T-CPR, with a median difference of -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. However, 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.

Safety and tolerability data were not reported. Key limitations include the simulation study design using manikins and the population limited to university students, who were young and healthy without prior CPR training. Clinical outcomes such as survival were not measured.

For practice, these findings suggest structured visual modeling integrated into dispatcher-assisted CPR systems may enhance bystander resuscitation performance in simulated settings. However, results from this manikin-based trial with a specific student population may not directly translate to real-world clinical outcomes or diverse community settings.

Imagine you're the first person to see someone collapse. Your heart races. You call 911, but you've never learned CPR. What if the dispatcher could show you exactly what to do, right on your phone screen? That's what researchers tested in a simulation with 85 university students who had no prior CPR training. They compared two ways a dispatcher could guide someone: the standard voice call, and a new video call where the dispatcher demonstrated CPR on a manikin in real time. The students who saw the video performed significantly better CPR. Their chest compressions were deeper, at a better rate, and they had shorter pauses. The study's design was strong—it was randomized and blinded—and the video method was independently linked to better performance. But there are important caveats. This was a simulation using manikins, not a real person in cardiac arrest. The students were young and healthy, which might not reflect the abilities of a more diverse public in a high-stress, real emergency. The study didn't measure the most important thing: whether this better CPR would actually lead to someone surviving. It only measured the quality of the CPR itself for five minutes. So, while the idea of visual guidance is promising and could help bridge gaps in public training, we don't yet know if it changes real-world outcomes.

What this means for you:

In a simulation, video calls helped untrained people perform better CPR than voice calls alone.

Study Details

Study typeRct

Sample sizen = 40

EvidenceLevel 2

PublishedApr 2026

PMID41940527

View Original Abstract ↓

INTRODUCTION: 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. STUDY OBJECTIVE: 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. METHODS: 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. RESULTS: 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. CONCLUSION: 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.

Video call-assisted dispatcher guidance improves CPR quality metrics in simulation study of untrained studentsCan a video call help someone save a life when they've never learned CPR?

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Video call-assisted dispatcher guidance improves CPR quality metrics in simulation study of untrained studentsCan a video call help someone save a life when they've never learned CPR?

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