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Abstract

BACKGROUND: Resuscitation guidelines encourage the use of cardiopulmonary resuscitation (CPR) feedback devices implying better outcomes after sudden cardiac arrest. Whether effective continuous feedback could also be given verbally by a second rescuer ("human feedback") has not been investigated yet. We, therefore, compared the effect of human feedback to a CPR feedback device. METHODS: In an open, prospective, randomised, controlled trial, we compared CPR performance of three groups of medical students in a two-rescuer scenario. Group "sCPR" was taught standard BLS without continuous feedback, serving as control. Group "mfCPR" was taught BLS with mechanical audio-visual feedback (HeartStart MRx with Q-CPR-Technology™). Group "hfCPR" was taught standard BLS with human feedback. Afterwards, 326 medical students performed two-rescuer BLS on a manikin for 8 min. CPR quality parameters, such as "effective compression ratio" (ECR: compressions with correct hand position, depth and complete decompression multiplied by flow-time fraction), and other compression, ventilation and time-related parameters were assessed for all groups. RESULTS: ECR was comparable between the hfCPR and the mfCPR group (0.33 vs. 0.35, p = 0.435). The hfCPR group needed less time until starting chest compressions (2 vs. 8 s, p < 0.001) and showed fewer incorrect decompressions (26 vs. 33 %, p = 0.044). On the other hand, absolute hands-off time was higher in the hfCPR group (67 vs. 60 s, p = 0.021). CONCLUSIONS: The quality of CPR with human feedback or by using a mechanical audio-visual feedback device was similar. Further studies should investigate whether extended human feedback training could further increase CPR quality at comparable costs for training.

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N., P., G., G., F.J., N., D., S., M., H., J., B., … Fischer, H. (2016). Short structured feedback training is equivalent to a mechanical feedback device in two-rescuer BLS: a randomised simulation study. Scandinavian Journal of Trauma, Resuscitation and Emergency Medicine, 24(1), 70. https://doi.org/10.1186/s13049-016-0265-9 LK - http://limo.libis.be/resolver?&sid=EMBASE&issn=17577241&id=doi:10.1186%2Fs13049-016-0265-9&atitle=Short+structured+feedback+training+is+equivalent+to+a+mechanical+feedback+device+in+two-rescuer+BLS%3A+a+randomised+simulation+study&stitle=Scand+J+Trauma+Resusc+Emerg+Med&title=Scandinavian+journal+of+trauma%2C+resuscitation+and+emergency+medicine&volume=24&issue=&spage=70&epage=&aulast=Pavo&aufirst=Noemi&auinit=N.&aufull=Pavo+N.&coden=&isbn=&pages=70-&date=2016&auin

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