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Circulation, Vol 80, 1231-1239, Copyright © 1989 by American Heart Association

ARTICLES

Dispatcher-assisted cardiopulmonary resuscitation. Validation of efficacy

AL Kellermann, BB Hackman and G Somes
Division of Emergency Medicine, University of Tennessee, Memphis.

Dispatcher-delivered telephone instruction in cardiopulmonary resuscitation (CPR) has been proposed to increase rates of bystander CPR in cases of out-of-hospital cardiac arrest. We tested the efficacy of a previously developed CPR message using a recording mannikin in a high stress, simulated cardiac arrest scenario. Community volunteers were unaware they would perform CPR until immediately before each trial. Performance of volunteers without prior CPR training (group A, n = 65) who received telephone instruction was compared with that of previously trained volunteers (group B, n = 43) who received the same message. Performances of both groups were also compared with a third group (group C, n = 43) composed of previously trained volunteers who did not receive the message. Quality of CPR was graded by three CPR instructors using explicit criteria. Printout strips from the recording mannikins were also analyzed. Evaluators were unaware of the training status of volunteers. The three groups were of comparable sex, race, and educational level, but group C was significantly younger than groups A and B (31.7 vs. 37.7 years, p less than 0.001). Because of the time required for telephone instruction, groups A and B started chest compressions a mean of 4.0 minutes after collapse compared with 1.2 minutes for group C (p less than 0.0001). We found that the previously untrained volunteers of group A performed CPR of an overall quality comparable to that performed by previously trained members of group C. Group A performed chest compressions significantly better than group C (p less than 0.02) but had greater problems performing effective ventilations.(ABSTRACT TRUNCATED AT 250 WORDS)

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