Table 3B.
Event characteristics.
| Event characteristics | All (N-889) | ROSC |
24-h survival |
Survival to discharge |
|||
|---|---|---|---|---|---|---|---|
| Yes (N = 484) | No (N = 405) | Yes (N = 342) | No (N = 547) | Yes (N = 194) | No (N = 695) | ||
| Monitored | |||||||
| Yes | 843 (95%) | 95% | 94% | 97% | 94% | 93% | 95% |
| No | 46 (5%) | 5% | 6% | 3% | 6% | 7% | 5% |
| Witnessed | |||||||
| Yes | 852 (96%) | 96% | 96% | 97% | 95% | 95% | 96% |
| No | 37 (4%) | 4% | 4% | 3% | 5% | 5% | 4% |
| Weekend | |||||||
| Yes | 263 (33%) | 31% | 36% | 28% | 37% | 29% | 35% |
| No | 526 (67%) | 69% | 64% | 72% | 63% | 71% | 65% |
| Event location | |||||||
| ICU | 649 (73%) | 74% | 72% | 77% | 72% | 69% | 74% |
| ED | 86 (9%) | 9% | 11% | 5% | 12% | 9% | 10% |
| Ward | 60 (7%) | 6% | 8% | 5% | 8% | 5% | 7% |
| OR/PACU | 44 (5%) | 6% | 4% | 6% | 4% | 10% | 4% |
| Diagnostic/interventional | 24 (3%) | 3% | 3% | 3% | 3% | 3% | 3% |
| Other | 26 (3%) | 4% | 2% | 4% | 2% | 4% | 3% |
| Initial pVT/VF | 514 (58%) | 68% | 45% | 71% | 49% | 76% | 53% |
| Subsequent pVT/VF | 375 (42%) | 32% | 54% | 29% | 51% | 24% | 47% |
The percentages in each row reflect the percentage of patients within that group. ROSC, return of spontaneous circulation for >20 min; pVT/VF, pulseless ventricular tachycardia/ventricular fibrillation; ICU, intensive care unit: ED, emergency department; OR, operating room; PACU, post anesthesia care unit.