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J Korean Soc Emerg Med > Volume 28(2); 2017 > Article
Journal of The Korean Society of Emergency Medicine 2017;28(2): 159-166.
심폐소생술 시 정확한 호흡제공을 위한 현장 되먹임 장치(Amflow)의 유용성 평가를 위한 시뮬레이션 연구
박상오
건국대학교 의학전문대학원 응급의학교실
A Simulation Study for Evaluating the Efficacy of Live-feedback Device (Amflow) for Delivering Correct Ventilations During Cardiopulmonary Resuscitation
Sang O Park
Department of Emergency Medicine, Konkuk University Hospital, School of Medicine, Konkuk University, Seoul, Korea
Correspondence  Sang O Park ,Tel: 02-2030-5551, Fax: 02-2030-5789, Email: empso@kuh.ac.kr,
Received: January 12, 2017; Revised: January 16, 2017   Accepted: March 23, 2017.  Published online: April 30, 2017.
ABSTRACT
Purpose:
The delivery of optimal respiration rate (RR) and tidal volume (TV) is a challenging issue during cardiopulmonary resuscitation (CPR). Amflow is a newly designed feedback device to optimize ventilation. The aim of study is to verify the efficacy of this device for delivering the correct RR and TV during simulated CPR.
Method:
This prospective, random cross-over designed study included a total of 40 participants who were trained for ventilation method. Using the self-inflating bags with Amflow and without Amflow, participants delivered 5-min of ventilations to test the lungs connected to gas flow analyzers. The correct RR and TV were defined as 10 breaths/min and 500-600 mL, respectively.
Results:
For RRs during CPR, the Amflow group showed significantly higher proportions of delivering the correct RR (99.0%, 198/200) than the control group (ventilation without Amflow) (12.0%, 24/200) (p<0001). For TVs, the mean TVs were higher in the control group (535.4±87.9) than in the Amflow group (505.4±39.1) (p<0.001). Proportions of delivering the correct TVs were higher in the Amflow group (56.9%, 1,137/1,999) than in the control group (46.4%, 929/2,003) (p<0.001).
Conclusion:
Amflow could be useful in delivering the correct RR and TV for ventilations using bag-mask bags during CPR.
Key words: Cardiopulmonary resuscitation, Ventilation, Tidal volume, Ventilator, Feedback
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