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Table 1 Depth and rate of chest compressions during five consecutive CPR cycles in standard and atypical rescuer position

From: CPR with restricted patient access using alternative rescuer positions: a randomised cross-over manikin study simulating the CPR scenario after avalanche burial

Rescuer position Standard
n = 7739*
Over-the-head
n = 7791a
Straddle
n = 7909a
Total
n = 23,439a
Difference between groups
Compress. depth > 50 mm n = 7663 (99. 0%) n = 7721 (99.1%) n = 7694 (96.14%) n = 22,988 (98.08%) p = 0.164
Compress. depth < 50 mm n = 76 (1.0%) n = 70 (0.9%) n = 305 (3.86%) n = 451 (1.92%) p = 0.094
Insufficient chest recoil n = 3306 (42.7%) n = 3480 (44.7%) n = 3489 (44.1%) n = 10,275 (43.8%) p = 0.322
Mean compression rate 122/min 128/min 124/min 125/min p = 0.229
  1. aThe number of total chest compressions exceeded the number of chest compressions required by guidelines (total 22,500; 7500 in each position), because some participants performed more chest compressions than required