Effectiveness of the new 'Mobile AED Map' to find and retrieve an AED: A randomised controlled trial.
BACKGROUND
Although early shock with an automated external defibrillator (AED) is one of the several key elements to save out-of-hospital cardiac arrest (OHCA) victims, it is not always easy to find and retrieve a nearby AED in emergency settings. We developed a cell phone web system, the Mobile AED Map, displaying nearby AEDs located anywhere. The simulation trial in the present study aims to compare the time and travel distance required to access an AED and retrieve it with and without the Mobile AED Map.


METHODS



METHODS
Randomised controlled trial.


METHODS
Two fields where it was estimated to take 2min (120-170m) to access the nearest AED. Participants were randomly assigned to either the Mobile AED Map group or the control group. We provided each participant in both groups with an OHCA scenario, and measured the time and travel distance to find and retrieve a nearby AED.


RESULTS
Forty-three volunteers were enrolled and completed the protocol. The time to access and retrieve an AED was not significantly different between the Mobile AED Map group (400±238s) and the control group (407±256s, p=0.92). The travel distance was significantly shorter in the Mobile AED Map group (606m vs. 891m, p=0.019). Trial field conditions affected the results differently.


CONCLUSIONS
Although the new Mobile AED Map reduced the travel distance to access and retrieve the AED, it failed to shorten the time. Further technological improvements of the system are needed to increase its usefulness in emergency settings (UMIN000002043).
Department of Traumatology and Acute Critical Medicine, Osaka University Graduate School of Medicine, 2-15 Yamada-Oka, Suita, Osaka 565-0871, Japan.
Tomohiko
T
Sakai
Taku
T
Iwami
Tetsuhisa
T
Kitamura
Chika
C
Nishiyama
Takashi
T
Kawamura
Kentaro
K
Kajino
Hiroshi
H
Tanaka
Seishiro
S
Marukawa
Osamu
O
Tasaki
Tadahiko
T
Shiozaki
Hiroshi
H
Ogura
Yasuyuki
Y
Kuwagata
Takeshi
T
Shimazu
D000328:Adult; D016887:Cardiopulmonary Resuscitation / Q000295:instrumentation*; D047548:Defibrillators; D004867:Equipment Design; D005260:Female; D006801:Humans; D008297:Male; D058687:Out-of-Hospital Cardiac Arrest / Q000628:therapy*; D011446:Prospective Studies; D013997:Time Factors; D016896:Treatment Outcome