Article Text

Download PDFPDF
Performance of cellular phones with video telephony in the use of automated external defibrillators by untrained laypersons
  1. J S You1,
  2. S Park1,
  3. S P Chung2,
  4. J W Park3
  1. 1
    Ulsan Fire Department Headquarters, Ulsan, Republic of Korea
  2. 2
    Department of Emergency Medicine, Yonsei University College of Medicine, Seoul, Republic of Korea
  3. 3
    Department of Emergency Medicine, Kosin University, College of Medicine, Busan, Republic of Korea
  1. Dr J W Park, Department of Emergency Medicine, Kosin University Gospel Hospital, Amnam-dong, Seo-gu, Busan, 602-703, Republic of Korea; erman{at}


Aim: To evaluate the hypothesis that using an automated external defibrillator (AED) with video telephony-directed cellular phone instructions for untrained laypersons would increase the probability of successful performance of AEDs. Real-time communication with visual images can provide critical information and appropriate instructions to both laypersons and dispatchers.

Methods: A prospective observational study was undertaken. 52 public officers with no previous experience in the use of a defibrillator were presented with a scenario in which they were asked to use an AED on a manikin according to the instructions given to them by cellular phones with video telephony. The proportion who successfully delivered a shock and the time interval from cardiac arrest to delivery of the shock were recorded.

Results: Placement of the electrode pads was performed correctly by all 52 participants and 51 (98%) delivered an accurate shock. The mean (SD) time to correct shock delivery was 131.8 (20.6) s (range 101–202).

Conclusion: Correct pad placement and shock delivery can be performed using an AED when instructions are provided via video telephone because a dispatcher can monitor every step and provide correct information.

Statistics from

Request Permissions

If you wish to reuse any or all of this article please use the link below which will take you to the Copyright Clearance Center’s RightsLink service. You will be able to get a quick price and instant permission to reuse the content in many different ways.


  • Competing interests: None.

  • Ethics approval: Informed consent was obtained from the participants before the test and the study was approved by the local research ethics committee.