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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
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.
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.
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.
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).
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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