Analysis of the effect of one-hand chest compression and rescuers’ characteristics affecting compression in unfolded stretchers

Seo, Yong Song; Kang, Ji Hun; Kim, Yang Weon; Yoon, Yoo Sang; Park, Chul Ho; Ji, Jae Gu; Lee, Si Won

J Korean Soc Emerg Med > Volume 33(1); 2022 > Article

Original Article

Journal of The Korean Society of Emergency Medicine 2022;33(1): 11-18.

펼쳐진 상태의 구급차용 침대차에서 시행하는 한 손 가슴 압박의 효과 및압박에 영향을 미치는 구조자의 특성 분석

서용송

인제대학교 의과대학 응급의학교실

Analysis of the effect of one-hand chest compression and rescuers’ characteristics affecting compression in unfolded stretchers

Department of Emergency Medicine, Inje University College of Medicine, Busan, Korea

Correspondence

Ji Hun Kang ,Tel: 051-890-6120, Fax: 051-891-1465, Email: seoyongsong@gmail.com,

Received: September 18, 2020; Revised: October 18, 2020 Accepted: November 4, 2020. Published online: February 28, 2022.

ABSTRACT

Objective:
When rescuers move from ambulance to resuscitation area, they press the chest with one-hand by the stretchers. The purpose of this study was to investigate the effect of one-hand chest compression on unfolded stretchers and analyze the characteristics of rescuers that affect compression.
Method:
A manikin simulation study was planned. A total of 28 participants performed one-hand chest compression for one minute to a manikin on the unfolded stretchers. The depth of compression, the extent of recoil and compression frequency were measured, and the results were analyzed. Correlation analysis was done between participant characteristics and depth and frequency of compression. Linear regression analysis was done for variables with significant correlation.
Results:
Four participants were excluded due to wrist or shoulder pain. A total of 24 participants (13 male; 11 female) were enrolled. The mean depth of compression was 34.88±11.06 cm; the mean extent of recoil was 50.00±0 cm. The mean frequency of compression was 104.71±11.07 per minute. The extent of recoil and frequency of compression were satisfied with cardiopulmonary resuscitation (CPR) guidelines. The depth of compression was highly correlated with participants’ sex (r=-0.88), height (r=0.86), and weight (r=0.78). When adjusted for sex, the depth of compression increased as height and weight increased.
Conclusion:
Mechanical chest compression device should be used when CPR is required while moving a cardiac arrest patient by the stretchers. If CPR needs to be done manually, moving distance should be minimized. Finally, a new type of stretcher that fits the body shape of Koreans should be developed.

Key words: Chest compression; Stretchers; Manikin study; Cardiopulmonary resuscitation