Chest compressions become deeper when pushing with forward lean: A simulation study

IntroductionIn conventional basic life support (c-BLS), a lone rescuer is recommended to start chest compressions (CCs) after activating the emergency medical system. To initiate earlier CCs in lone-rescuer BLS, we designed a modified BLS (m-BLS) sequence in which the lone rescuer commences one-handed CCs while calling for help using a handheld cellular phone with the other free hand. This study aimed to compare the quality of BLS between c-BLS and m-BLS.MethodsThis was a simulation study performed with a randomised cross-over controlled trial design. A total of 108 university students were finally enrolled. After training for both c-BLS and m-BLS, participants performed a 3-minute c-BLS or m-BLS on a manikin with a SkillReporter at random cross-over order. The paired mean difference with SE between c-BLS and m-BLS was assessed using paired t-test.ResultsThe m-BLS had reduced lag time before the initiation of CCs (with a mean estimated paired difference (SE) of −35.0 (90.4) s) (p<0.001). For CC, a significant increase in compression fraction and a higher number of CCs with correct depth were observed in m-BLS (with a mean estimated paired difference (SE) of 16.2% (0.6) and 26.9% (3.3), respectively) (all p<0.001). However, no significant paired difference was observed in the hand position, compression rate and interruption time. For ventilation, the mean tidal volumes did not differ. However, the number of breaths with correct tidal volume was higher in m-BLS than in c-BLS.ConclusionIn simulated lone-rescuer BLS, the m-BLS could deliver significantly earlier CCs than the c-BLS while maintaining high-quality cardiopulmonary resuscitation.

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A randomised control trial of prompt and feedback devices and their impact on quality of chest compressions—A simulation study

Resuscitation ◽

10.1016/j.resuscitation.2014.01.015 ◽

2014 ◽

Vol 85 (4) ◽

pp. 553-559 ◽

Cited By ~ 37

Author(s):

Joyce Yeung ◽

Robin Davies ◽

Fang Gao ◽

Gavin D. Perkins

Keyword(s):

Simulation Study ◽

Randomised Control Trial ◽

Chest Compressions

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Does the use of cardiopulmonary resuscitation feedback devices improve the quality of chest compressions performed by doctors? A prospective, randomized, cross-over simulation study

Cardiology Journal ◽

10.5603/cj.a2018.0091 ◽

2019 ◽

Vol 26 (5) ◽

pp. 529-535 ◽

Cited By ~ 3

Author(s):

Jolanta Majer ◽

Milosz J. Jaguszewski ◽

Michael Frass ◽

Marcin Leskiewicz ◽

Jacek Smereka ◽

...

Keyword(s):

Cardiopulmonary Resuscitation ◽

Simulation Study ◽

Chest Compressions

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Abstract 12035: Effect of 10-minute Dispatch-Assisted Cardiopulmonary Resuscitation Training in Addition to a Standard Course: A Simulation Study

Circulation ◽

10.1161/circ.132.suppl_3.12035 ◽

2015 ◽

Vol 132 (suppl_3) ◽

Author(s):

Hidetada Fukushima ◽

Hideki Asai ◽

Kazunobu Norimoto ◽

Tadahiko Seki ◽

Yasuyuki Kawai ◽

...

Keyword(s):

Cardiac Arrest ◽

Cardiopulmonary Resuscitation ◽

Median Time ◽

Simulation Study ◽

Time Interval ◽

Standard Group ◽

Chest Compressions ◽

Resuscitation Training ◽

Group A ◽

Cpr Training

Introduction: Immediate bystander cardiopulmonary resuscitation (CPR) is essential for the good outcome of sudden cardiac arrest victims. Current guidelines recommend dispatch-assisted CPR (DA-CPR), which can double the frequency of bystander CPR. Laypersons, however, are not familiar with how dispatchers provide CPR instructions. DA-CPR training may be effective at spreading DA-CPR, but this needs to be validated. The aim of this study was to determine the effectiveness of brief DA-CPR training in addition to a standard CPR training course. Methods: We conducted a DA-CPR simulation study. Participants with no prior CPR training within 1 year were assigned randomly to one of two 90-min CPR training courses (DA-CPR Group: a standard CPR course with 10-min DA-CPR training or Standard Group: a standard CPR course with a simple introduction to how dispatchers deal with emergency calls). In the DA-CPR Group, the participants practiced the role of a dispatcher and an emergency caller. At 6 months after training, the subjects performed CPR for 2 min under instruction from off-duty dispatchers. Results: Of the 66 participants, 59 (DA-CPR Group, 30; Standard Group, 29) completed the simulation at 6 months after training. The median time intervals between call receipt and cardiac arrest recognition or instruction for chest compressions by dispatchers were similar between both groups. However, the subjects in the DA-CPR Group provided the first compression more quickly (median time interval between call receipt and the first dispatch-assisted compression: 108 vs. 129 s, respectively, p < 0.05 Mann-Whitney U test). The quality of chest compressions was, however, similar between both groups. Conclusions: All participants could perform DA-CPR at 6 months after training, but those in the DA-CPR Group started chest compressions more quickly. DA-CPR training might be effective for the immediate development of better cooperation between a layperson and a dispatcher.

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