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

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

Rescuer position	Standard n = 7739*	Over-the-head n = 7791^a	Straddle n = 7909^a	Total n = 23,439^a	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

^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

ISSN: 1757-7241