Investigation of low back and shoulder demand during cardiopulmonary resuscitation: the effect of different compression-ventilation ratios

摘要: Background: The current American Heart Association (AHA) standard cardiopulmonary resuscitation (CPR) is performed with a compression-ventilation ratio of 30:2 (standard CPR), meaning 30 compressions are applied to the chest followed by administration two breaths victim. Some evidence has shown that performing continuous rather than CPR breaks in for administering breaths, may increase survival rates after cardiac arrest. Cont-CPR been be very fatiguing nature, significant drop compression force within first minutes CPR. purpose this study was examine and compare biomechanical demand individuals contCPR under timing conditions representative three-person rescue team. Methodology: Fifteen (ten emergency responders, five civilians) sets trials; one set using (30:2) other cont-CPR. order which these types were presented each participant randomized. trials comprised three two-minute periods administration, during on transducer placed over sternum mannequin. In between trial, participants given four rest (to simulate team). After third before repeating complete procedure second type Immediately prior to, immediately after, completing contCPR), instructed fill out ratings perceived exertion discomfort scales (RPE RPD, respectively) as well perform static back extensor test evaluate low muscular fatigue. During trials, following measures collected: 1)