Compression-only-cardiopulmonary resuscitation in telephone assisted bystanders: Is the instruction “push as hard as you can” superior to achieve 5–6cm chest compression depth than the current guideline recommendation? A double blind-randomized-parallel group-simulation-study

Introduction: Immediate bystander cardiopulmonary resuscitation (CPR) is essential for the good outcome of sudden cardiac arrest victims. Current guidelines recommend dispatch-assisted CPR (DACPR). Its quality, however, varies from case to case. The aim of this study was todetermine the effectiveness of dispatch coaching on the quality of CPR by lay rescuers. Methods: We conducted a DACPR simulation study. Participants with no prior CPR training within 1 year were assigned randomly to one of two DACPR simulations (No Coaching Group: callers were told to perform CPR and the dispatcher sometimes confirmed if the caller was performing CPR or Coaching Group: the dispatcher coached, encouraged, and counted out loud with a metronome). The study participants performed CPR for 2 minutes under the study dispatcher. All performances were recorded by video camera and Resusci Anne® QCPR (Laerdal, Norway). Results: Forty-nine participants aged 20s to 50s were recruited, and 48 completed the simulation (Coaching Group, 27, 9 males and No Coaching Group, 21, 16 males). The average rate of chest compressions was 102.5/min in Coaching Group and 109.3/min in No Coaching group (p=0.270). The average compression depth was slightly deeper in Coaching group (43.0mm vs 41.5mm, p=0.695). When compared the average depth of the first 10 compressions to the total average in each group, the depth significantly improved in Coaching group while that decreased in No Coaching Groups (38.4mm to 43.0mm; p=0.020, 42.3mm to 41.5mm; p=0.431, respectively). The chest compression fraction was also high in Coaching Group (99.4% vs 93.0%, p=0.005). Conclusions: Participants in Coaching Group performed better CPR compared to No Coaching Group in terms of high flow fraction. Although the average compression depth was below the guideline recommendation in both groups, it significantly improved in Coaching group. This study indicates that dispatch coaching can optimize the performance of bystander CPR.

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Evaluation of Chest Compression Depth during Nine Minutes of Hands-Only Cardiopulmonary Resuscitation Performed by a Lone Rescuer and its Effect by Age Group: A Pilot Simulation Study Using a Manikin

Hong Kong Journal of Emergency Medicine ◽

10.1177/102490791302000102 ◽

2013 ◽

Vol 20 (1) ◽

pp. 9-17

Author(s):

CK Hong ◽

SO Park ◽

CS Choi ◽

YH Lee ◽

AJ Sung ◽

...

Keyword(s):

Cardiopulmonary Resuscitation ◽

Chest Compression ◽

Simulation Study ◽

Age Group ◽

Compression Depth ◽

Group A

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Effect of the Use of Metronome Feedback on the Quality of Pediatric Cardiopulmonary Resuscitation

International Journal of Environmental Research and Public Health ◽

10.3390/ijerph18158087 ◽

2021 ◽

Vol 18 (15) ◽

pp. 8087

Author(s):

Dongjun Yang ◽

Wongyu Lee ◽

Jehyeok Oh

Keyword(s):

Cardiopulmonary Resuscitation ◽

Chest Compression ◽

Healthcare Providers ◽

Compression Rate ◽

Audio Feedback ◽

Simple Method ◽

Compression Depth ◽

Pediatric Resuscitation ◽

Cpr Quality

Although the use of audio feedback with devices such as metronomes during cardiopulmonary resuscitation (CPR) is a simple method for improving CPR quality, its effect on the quality of pediatric CPR has not been adequately evaluated. In this study, 64 healthcare providers performed CPR (with one- and two-handed chest compression (OHCC and THCC, respectively)) on a pediatric resuscitation manikin (Resusci Junior QCPR), with and without audio feedback using a metronome (110 beats/min). CPR was performed on the floor, with a compression-to-ventilation ratio of 30:2. For both OHCC and THCC, the rate of achievement of an adequate compression rate during CPR was significantly higher when performed with metronome feedback than that without metronome feedback (CPR with vs. without feedback: 100.0% (99.0, 100.0) vs. 94.0% (69.0, 99.0), p < 0.001, for OHCC, and 100.0% (98.5, 100.0) vs. 91.0% (34.5, 98.5), p < 0.001, for THCC). However, the rate of achievement of adequate compression depth during the CPR performed was significantly higher without metronome feedback than that with metronome feedback (CPR with vs. without feedback: 95.0% (23.5, 99.5) vs. 98.5% (77.5, 100.0), p = 0.004, for OHCC, and 99.0% (95.5, 100.0) vs. 100.0% (99.0, 100.0), p = 0.003, for THCC). Although metronome feedback during pediatric CPR could increase the rate of achievement of adequate compression rates, it could cause decreased compression depth.

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Does the Q-CPR chest compression pad reliably determine compression depth during cardiopulmonary resuscitation?

European Journal of Anaesthesiology ◽

10.1097/00003643-201206001-00629 ◽

2012 ◽

Vol 29 ◽

pp. 190 ◽

Cited By ~ 1

Author(s):

P. Schober ◽

R. Krage ◽

V. Lagerburg ◽

D. van Groeningen ◽

S. A. Loer ◽

...

Keyword(s):

Cardiopulmonary Resuscitation ◽

Chest Compression ◽

Compression Depth

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Role of Dominant Hand Position during Chest Compression by Novice Rescuers: An Observational Simulation Study

Hong Kong Journal of Emergency Medicine ◽

10.1177/102490791402100607 ◽

2014 ◽

Vol 21 (6) ◽

pp. 382-386 ◽

Cited By ~ 1

Author(s):

Ch Jo ◽

Jh Ahn ◽

Yd Shon ◽

Gc Cho

Keyword(s):

Hong Kong ◽

Cardiopulmonary Resuscitation ◽

Training Program ◽

Chest Compression ◽

Simulation Study ◽

Hand Position ◽

Dominant Hand ◽

Cpr Training

Introduction The aim of this study was to determine the effect of hand positioning on the quality of external chest compression (ECC) by novice rescuers. Methods This observational simulation study was conducted for 117 included participants. After completion of an adult cardiopulmonary resuscitation (CPR) training program for 3-h, the participants selected which of their hands would be in contact with the mannequin during ECC and performed 5 cycles of single rescuer CPR on a recording mannequin. The participants were assigned to 2 groups: the dominant hand group (DH; n=40) and the non-dominant hand group (NH; n=29). The depth and rate of ECC were analysed to compare the effectiveness of ECC between 2 groups. Results The rate of ECC was significantly faster in the DH group (mean, 117.3 ±11.4/min) than in the NH group (mean, 110.9±12.2/min) (p=0.028). However, the depth of ECC in the dominant hand group (mean, 52.4±5.9 mm) was not significantly different from that in the non-dominant hand group (mean, 50.8±6.0 mm) (p=0.287). Similarly, the portion of ECC with inadequate depth in the dominant hand group (mean, 1.8±4.3%) was not significantly different from that in the non-dominant hand group (mean, 5.3±15.6%) (p=0.252). Conclusions ECC can be performed with an acceptably higher rate of compressions when the dominant hand of the novice rescuer is placed in contact with the sternum. However, the position of the dominant hand does not affect the depth of ECC. (Hong Kong j.emerg.med. 2014;21:382-386)

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