Table 3.
Between-group differences in surviving and deceased patientsa
| Characteristics | Surviving (n = 60) | Deceased (n = 51) | P value |
|---|---|---|---|
| Males, n (%) | 47 (78) | 40 (78) | 0.83 |
| Age, yr | 56 [46 to 67] | 61 [50 to 74] | 0.07 |
| SAPS II | 56 [48 to 64] | 63 [58 to 74] | 0.0005 |
| Duration of no-flow, minutes | 4 [1 to 10] | 7 [1 to 10] | 0.1 |
| Time to ROSC, minutes | 20 [15 to 35] | 40 [27 to 56] | 0.00005 |
| Epinephrine dose, mg | 0 [0 to 4] | 5 [1 to 10] | 0.005 |
| Location of cardiac arrest | 0.44 | ||
| Home | 21 (36) | 22 (44) | |
| Workplace | 12 (20) | 6 (12) | |
| Public place | 27 (45) | 23 (45) | |
| Coronary angiography | 54 (90) | 37 (73) | 0.03 |
| PCI | 29 (48) | 17 (33) | 0.15 |
| MTH | 46 (77) | 32 (63) | 0.16 |
| Glasgow Coma Scale score | 3 [3 to 4] | 3 [3 to 3] | 0.07 |
| SAP, mmHg | 129 [114 to 148] | 121 [105 to 146] | 0.21 |
| Heart rate, beats/min | 91 [78 to 104] | 88 [74 to 108] | 0.9 |
| PaO2/FiO2 ratio, mmHg | 258 [194 to 340] | 241 [127 to 328] | 0.13 |
| Creatinine, μmol/L | 102 [83 to 120] | 118 [98 to 147] | 0.02 |
| Base deficit, mmol/L | 4.9 [2.1 to 9] | 7.2 [3.9 to 11.6] | 0.18 |
aSAPS II: Simplified Acute Physiology Score II; ROSC: return of spontaneous circulation; epinephrine dose: cumulative dose of epinephrine required during initial resuscitation; PCI: percutaneous coronary intervention; MTH: mild therapeutic hypothermia; SAP: systolic arterial pressure; PaO2/FiO2 ratio, ratio of partial pressure of arterial oxygen to the fraction of inspired oxygen. Numbers between brackets are percentages or 25th to 75th percentiles.