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Differentiation of tidal volume & mean airway pressure with different Bag-Valve-Mask compression depth and compression rate

Bag-Valve-Mask의 사용방법에 따른 일회호흡량과 평균기도압의 변화 연구

  • Jo, Seung-Mook (Department of Emergency Medical Service, Eulji University) ;
  • Jung, Hyung-Keon (Department of Emergency Medical Service, Eulji University)
  • 조승묵 (을지대학교 응급구조학과) ;
  • 정형근 (을지대학교 응급구조학과)
  • Received : 2012.06.18
  • Accepted : 2012.08.16
  • Published : 2012.08.31

Abstract

Purpose : The purpose of this study is to get basal user guidelines of safer bag-valve-mask application on patient with normal pulmonary patho-physiologic condition. Methods : This study was accomplished by pre-qualified 25 EMS junior grade students. Participants were instructed randomly compress bag to one-third, half and total and also with differesnt compression speed. Resultant tidal volumes and mean airway pressures obtained in RespiTrainer were analysed in relation to the each compression depth and rate. Results : Demographic difference does not affect tidal volume with any compression depth and rate change. Increasing compression depth is correlated with tidal volume increasement at any compression rate and also with mean airway pressure. If the compression depth is same, compression rate change did not affect significantly the resultant tidal volume or mean airway pressure. Conclusion : Hand size, Experience, BMI dose not affect tidal volume. Compress the 1600 ml bag half to total amount is safe way to offer sufficient tidal volume without risky high airway pressure delivery to patient airway who with normal lung patho-physiologic condition.

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