Table 3.
The differences of patient's characteristics between the presence or absence of bystander CPR
| All (n = 39) | Bystander CPR (+) (n = 26) | Bystander CPR (-) (n = 13) | p value | |
|---|---|---|---|---|
| Age (years) | 56.1 ± 13.1 | 54.3 ± 14.0 | 59.6 ± 10.6 | 0.20 |
| Gender male n, (%) | 33 (84.5) | 21 (81.0) | 12 (92.3) | 0.64 |
| Cause n, (%) | ||||
| Acute coronary syndrome | 19 (48.7) | 12 (46.2) | 7 (53.8) | 0.50 |
| Arrhythmia | 4 (10.3) | 2 (7.7) | 2 (15.4) | |
| Cardiomyopathy | 14 (35.9) | 10 (38.5) | 4 (30.8) | |
| Unknown | 2 (5.1) | 2 (7.7) | 0 (0) | |
| Time from emergency call to hospital arrival (min) | 30.6 ± 13.2 | 26.8 ± 13.0 | 38.2 ± 10.3 | < 0.01 |
| Shockable rhythm n, (%) | ||||
| Yes | 35 (89.7) | 22 (84.6) | 13 (100) | 0.28 |
| No | 4 (10.3) | 4 (15.4) | 0 (0) | |
| CPC n, (%) | ||||
| 1, 2 | 8 (20.5) | 8 (30.8) | 0 (0) | 0.04 |
| 3, 4, 5 | 31 (79.5) | 18 (69.2) | 13 (100) | |
| Blood gas analysis | ||||
| Potential of hydrogen | 6.94 ± 0.15 | 6.97 ± 0.15 | 6.89 ± 0.17 | 0.16 |
| Lactate (mg/dl) | 102.9 ± 32.8 | 101.6 ± 27.7 | 105.6 ± 42.3 | 0.76 |
| Bicarbonate (mmol/L) | 16.3 ± 4.5 | 16.1 ± 4.9 | 16.7 ± 3.9 | 0.70 |
| PCO2 (mmHg) | 79.3 ± 28.6 | 73.3 ± 25.2 | 91.2 ± 32.2 | 0.10 |