Effects of rescuer position on the kinematics of cardiopulmonary resuscitation (CPR) and the force of delivered compressions

Part 5: Adult Basic Life Support

“…One case series (LOE 4 90 ) and 4 manikin studies (LOE 5 [91][92][93][94] ) demonstrated that chest compressions performed on a bed are often too shallow. However, the case series (LOE 4 90 ) and 1 of the manikin studies (LOE 5 94 ) found that accelerometerbased CPR feedback devices failed to correct for compression of the underlying mattress, so it overestimated actual compression depth and may have contributed to delivery of shallow chest compressions.…”

Effects of bed height on the performance of chest compressions

“…Consequently, we speculated that the performance of chest compressions is affected by the stature of the rescuer as it influences the positional relationship between the rescuer and the patient. Most previous studies have reported no significant difference in the MCD according to changes in bed height,4 5 although one did report that the force of a compression decreases as the bed height increases 3…”

“…The 2005 ILCOR guidelines, however, do not recommend that patients be moved from a bed to the floor to perform CPR because the guidelines did not consider data on beds with standard mattresses or backboards 1. Previous studies about different bed heights showed no differences in the performance of CPR 4 5. However, these reports did not consider the stature of the rescuers.…”

Muscles Used for Chest Compression Under Static and Transportation Conditions

“…25,26 In another study, while the kinematics of CPR differed significantly with various rescuer positions, these differences did not affect the quality of chest compression. 27 In this study, we used electromyography to compare the quality of chest compression and muscle activity between static and ambulance transportation conditions. The mean i-EMG values for the deltoid, pectoralis major, and triceps brachii muscles were significantly higher under the ambulance transportation Values are mean ± standard deviation.…”