From: Influence of physical strain at high altitude on the quality of cardiopulmonary resuscitation
Baseline | High altitude | Difference (with 95% CI) | p-value | |
---|---|---|---|---|
Compression depth (cm, mean, SD) | 5.4 (1.6) | 4.3 (0.9) | −1.0 (−1.3 to −0.5) | < 0.001 |
Compression frequency (pm, mean, SD) | 120 (37) | 123 (11) | 3 (−4 to 10) | 0.36 |
Compressions in target depth (%, mean, SD) | 72 (31) | 17 (34) | −55 (−82 to −29) | < 0.001 |
Hands-off time (s, mean, SD) | 201 (63) | 189 (20) | −13 (−27 to 2) | 0.09 |
Duration of release phase (ms, mean, SD) | 414 (132) | 339 (82) | −75 (−101 to − 48) | < 0.001 |
Proportion of time performing chest compressions (%, mean, SD) | 79 (23) | 80 (2) | 1 (− 6 to 3) | 0.20 |