摘要
BACKGROUND:To assess the effectiveness of the telephone chest-compression-only cardiopulmonary resuscitation(CPR)guided by a pre-recorded instructional audio when compared with dispatcher-assisted resuscitation.METHODS:It was a prospective,blind,randomised controlled study involving 109 medical students without previous CPR training.In a standardized mannequin scenario,after the step of dispatcher-assisted cardiac arrest recognition,the participants performed compression-only resuscitation guided over the telephone by either:(1)the pre-recorded instructional audio(n=57);or(2)verbal dispatcher assistance(n=52).The simulation video records were reviewed to assess the CPR performance using a 13-item checklist.The interval from call reception to the first compression,total number and rate of compressions,total number and duration of pauses after the first compression were also recorded.RESULTS:There were no significant differences between the recording-assisted and dispatcher-assisted groups based on the overall performance score(5.6±2.2 vs.5.1±1.9,P>0.05)or individual criteria of the CPR performance checklist.The recording-assisted group demonstrated provided(170.2±48.0 vs.156.2±60.7).CONCLUSION:When provided by untrained persons in the simulated settings,the compression-only resuscitation guided by the pre-recorded instructional audio is no less efficient than dispatcher-assisted CPR.Future studies are warranted to further assess feasibility of using instructional audio aid as a potential alternative to dispatcher assistance.
BACKGROUND： To assess the effectiveness of the telephone chest-compression-only cardiopulmonary resuscitation （CPR） guided by a pre-recorded instructional audio when compared with dispatcher-assisted resuscitation.METHODS： It was a prospective, blind, randomised controlled study involving 109 medical students without previous CPR training. In a standardized mannequin scenario, after the step of dispatcher-assisted cardiac arrest recognition, the participants performed compression-only resuscitation guided over the telephone by either： （1） the pre-recorded instructional audio （n=57）; or （2） verbal dispatcher assistance （n=52）. The simulation video records were reviewed to assess the CPR performance using a 13-item checklist. The interval from call reception to the ？ rst compression, total number and rate of compressions, total number and duration of pauses after the first compression were also recorded.RESULTS： There were no significant differences between the recording-assisted and dispatcher-assisted groups based on the overall performance score （5.6±2.2 vs. 5.1±1.9, P〉0.05） or individual criteria of the CPR performance checklist. The recording-assisted group demonstrated signi？ cantly shorter time interval from call receipt to the ？ rst compression （86.0±14.3 vs. 91.2±14.2 s, P〈0.05）, higher compression rate （94.9±26.4 vs. 89.1±32.8 min-1） and number of compressions provided （170.2±48.0 vs. 156.2±60.7）.CONCLUSION： When provided by untrained persons in the simulated settings, the compression-only resuscitation guided by the pre-recorded instructional audio is no less efficient than dispatcher-assisted CPR. Future studies are warranted to further assess feasibility of using instructional audio aid as a potential alternative to dispatcher assistance.
