Interactive video instruction improves the quality of dispatcher-assisted chest compression-only cardiopulmonary resuscitation in simulated cardiac arrests*

Abstract

The addition of interactive video communication to dispatcher-assisted chest compression-only CPR initially delayed the commencement of chest compressions, but subsequently improved the depth and rate of compressions. The benefit was achieved mainly through real-time feedback.

The effect of a cellular-phone video demonstration to improve the quality of dispatcher-assisted chest compression-only cardiopulmonary resuscitation as compared with audio coaching

“…In addition, only 18-20% of the subjects performed chest compressions to the recommended depth. In the study by Yang et al, 2 the mean chest compression depth was 36 mm, and 20% of the subjects performed chest compression to the recommended depth, similar to the results of this study. In our study, most CPR performances that did not meet the recommended depth showed that it was due to shallow compressions.…”

“…The results obtained are similar to those from this study, but the rate of chest compressions from a previous study was slightly slower. 2 It is presumed that if the subjects were informed of their chest compression rate of 100 min −1 by phone, or if the chest compression rate was corrected through mobile video telephony, it would have been easier for them to maintain the appropriate chest compression rate while watching the CPR video, as was shown in this study.…”

“…The compression-only CPR with the help of audio-only instructions had been performed in the study conducted by Williams et al 13 That study with the chest compression rate of 58 min −1 is noted to be slower than the rate in this study. Yang et al 2 compared compression-only CPR with the help of a dispatcher on conventional voice telephones versus on mobile video telephones in simulated cardiac-arrest situations. They reported that the chest compression rate in the compression-only CPR aided by mobile video telephones was 95.5 min −1 , and that 46.5% of the test subjects performed chest compression at an appropriate rate.…”

“…1 Of these factors, it is shown that the time to bystander CPR contributes to the increase of survival to hospital discharge by two-to threefold. [1][2][3][4] While the rate of performing bystander CPR in other developed countries has reached 30-40%, it is only 10% in South Korea. 1 In 2008, as a means to increase the rate of bystander CPR, the American Heart Association (AHA) recommended that at least compression-only CPR be performed (Class of recommendations IIa).…”

“…7,8 The dispatcher-aided CPR may have some restrictions, such as time delay due to the performer's conversation with the dispatcher, and the variance of the dispatcher's skill; it may not improve the performance of bystander CPR using only voice instructions by phone. 2,6,8,9 Hand-held cellular phones have become ubiquitous, and the multimedia files stored can be viewed repeatedly. Some researchers have reported that in simulated cardiac-arrest situations, bystander CPR with the aid of CPR animation stored in cellular phones is more effective when compared with bystander CPR with the audio assistance of a dispatcher.…”