Accuracy of automatic geolocalization of smartphone location during emergency calls — A pilot study

Ecker, Hannes; Lindacher, Falko; Dressen, Jan; Wingen, Sabine; Hamacher, Stefanie; Böttiger, Bernd W.; Wetsch, Wolfgang A.

doi:10.1016/j.resuscitation.2019.10.030

Cited by 10 publications

(8 citation statements)

References 22 publications

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“…Surprisingly, communication with emergency authoritieswhich is one of the most crucial communication imaginableseems to be unaffected by these trends and remains a traditional "audio-only" phone call. So far, to our best knowledge, video-assisted CPR has only been adopted and is commercially available in very few regions [13,18,19]. Nevertheless, studies have demonstrated that video calls can provide additional information to improve emergency communication, especially in conjunction with CPR [11][12][13][18][19][20][21][22].…”

Section: Discussionmentioning

confidence: 99%

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Impact of video quality when evaluating video-assisted cardiopulmonary resuscitation: a randomized, controlled simulation trial

et al. 2021

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Background Although not routinely established during cardiopulmonary resuscitation (CPR), video-assisted CPR has been described as beneficial in the communication with emergency medical service (EMS) authorities in out-of-hospital cardiac arrest scenarios. Since the influence of video quality has not been investigated systematically and due to variation of quality of a live-stream video during video-assisted CPR, we investigated the influence of different video quality levels during the evaluation of CPR performance in video sequences. Methods Seven video sequences of CPR performance were recorded in high quality and artificially reduced to medium and low quality afterwards. Video sequences showed either correct CPR performance or one of six typical errors: too low and too high compression rate, superficial and increased compression depth, wrong hand position and incomplete release. Video sequences were randomly assigned to the different quality levels. During the randomised and double-blinded evaluation process, 46 paramedics and 47 emergency physicians evaluated seven video sequences of CPR performance in different quality levels (high, medium and low resolution). Results Of 650 video sequences, CPR performance was evaluable in 98.2%. CPR performance was correctly evaluated in 71.5% at low quality, in 76.8% at medium quality, and in 77.3% at high quality level, showing no significant differences depending on video quality (p = 0.306). In the subgroup analysis, correct classification of increased compression depth showed significant differences depending on video quality (p = 0.006). Further, there were significant differences in correct CPR classification depending on the presented error (p < 0.001). Allegedly errors, that were not shown in the video sequence, were classified in 28.3%, insignificantly depending on video quality. Correct evaluation did not show significant interprofessional differences (p = 0.468). Conclusion Video quality has no significant impact on the evaluation of CPR in a video sequence. Even low video quality leads to an acceptable rate of correct evaluation of CPR performance. There is a significant difference in evaluation of CPR performance depending on the presented error in a video sequence. Trial registration German Clinical Trial Register (Registration number DRKS00015297) Registered on 2018-08-21.

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Section: Discussionmentioning

confidence: 99%

“…So far, to our best knowledge, video-assisted CPR has only been adopted and is commercially available in very few regions [13,18,19]. Nevertheless, studies have demonstrated that video calls can provide additional information to improve emergency communication, especially in conjunction with CPR [11][12][13][18][19][20][21][22]. Fig.…”

Section: Discussionmentioning

confidence: 99%

Impact of video quality when evaluating video-assisted cardiopulmonary resuscitation: a randomized, controlled simulation trial

et al. 2021

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“…Ecker et al tested the use of automatic geolocalization using a smartphone app compared with a conventional emergency call with oral description of the location, for simulated EMS calls reporting a person suffering SCA. 46 Of 108 simulated SCA calls, using the smartphone app to call EMS resulted in significantly faster geolocation of the SCA victim (37 AE 36.6 seconds faster; P < 0.001), faster dispatch of EMS (41.2 AE 38.2 seconds earlier; P < 0.001), and faster initiation of CPR (39.6 AE 38.8 seconds earlier; P < 0.001) compared with a conventional call. The authors also estimated the difference between the actual location of the SCA victim and the estimated position provided by the EMS dispatcher and the app.…”

Section: Geolocalizationmentioning

confidence: 99%

Responding to Cardiac Arrest in the Community in the Digital Age

Allan

O'Neil

Currie

et al. 2022

Canadian Journal of Cardiology

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“…12,13 Although to transmit video as a part of an emergency call is technologically easy, this is not a wide-spread practice compared to using, for example, the caller geolocation applications (including Advanced Mobile Location) or text messaging. [14][15][16][17][18] So far, the use of video instructions during an emergency call in out-of-hospital cardiac arrest (OHCA) is the most explored area. 19,20 Recent meta-analysis and review of studies using video-instructed dispatcher-assisted bystander cardiopulmonary resuscitation (CPR) presents improved bystander CPR quality compared to routine audio telephone CPR and better neurologic outcome and survival.…”

Section: Introductionmentioning

confidence: 99%

Video Emergency Calls in Medical Dispatching: A Scoping Review

Sýkora

Peřan

Renza

et al. 2022

Prehosp. Disaster med.

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Background: Video emergency calls (VCs) represent a feasible future trend in medical dispatching. Acceptance among callers and dispatchers seems to be good. Indications, potential problems, limitations, and directions of research of adding a live video from smartphones to an emergency call have not been reviewed outside the context of out-of-hospital cardiac arrest (OHCA). Objective: The main objective of this study is to examine the scope and nature of research publications on the topic of VC. The secondary goal is to identify research gaps and discuss the potential directions of research efforts of VC. Design: Following PRISMA-ScR guidelines, online bibliographic databases PubMed, Web of Science, SCOPUS, Google Scholar, ClinicalTrials.gov, and gray literature were searched from the period of January 1, 2012 through March 1, 2022 in English. Only studies focusing on video transfer via mobile phone to emergency medical dispatch centers (EMDCs) were included. Results: Twelve articles were included in the qualitative synthesis and six main themes were identified: (1) cardiopulmonary resuscitation (CPR) guided by VC; (2) indications of VCs; (3) dispatchers’ feedback and perception; (4) technical aspects of VCs; (5) callers’ acceptance; and (6) confidentiality and legal issues. Conclusion: Video emergency calls are feasible and seem to be a well-accepted auxiliary method among dispatchers and callers. Some promising clinical results exist, especially for video-assisted CPR. On the other hand, there are still enormous knowledge gaps in the vast majority of implementation aspects of VC into practice.

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Accuracy of automatic geolocalization of smartphone location during emergency calls — A pilot study

Cited by 10 publications

References 22 publications

Impact of video quality when evaluating video-assisted cardiopulmonary resuscitation: a randomized, controlled simulation trial

Impact of video quality when evaluating video-assisted cardiopulmonary resuscitation: a randomized, controlled simulation trial

Responding to Cardiac Arrest in the Community in the Digital Age

Video Emergency Calls in Medical Dispatching: A Scoping Review

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