Table 2 Descriptive data of whole cardiopulmonary resuscitation
|  | No feedback period (N = 30) | Feedback period (N = 30) | P-value |
|---|---|---|---|
CPR duration (min) | 21.1 (15.1) | 35.4 (39.7) | 0.07 |
Chest compression fraction (%) | 82.1 (13.9) | 81.9 (20.2) | 0.95 |
Mean chest compression depth (cm) | 5.7 (1.5) | 6.3 (1.3) | 0.11 |
Mean chest compression rate (/min) | 110.3 (6.1) | 112.0 (6.0) | 0.40 |
Mean chest compression release velocity (mm/sec) | 355 (98) | 406 (82) | 0.03 |
Defibrillation | 7 (23.3%) | 8 (26.7%) | 0.70 |
Pre-shock pause (sec) | 3.1 (4.1) | 1.5 (1.8) | 0.69 |
Post-shock pause (sec) | 3.8 (4.6) | 1.2 (2.0) | 0.23 |