Table 5 Patient characteristics and outcomes of propensity-matched patients
| Â | Hypothermia-M group (n= 79) | Normothermia-M group (n= 79) | P value |
|---|---|---|---|
Age (years) | 60 (49 to 72) | 61 (50 to 71) | 0.62 |
Male gender | 62 (78) | 55 (70) | 0.20 |
Pittsburgh overall performance category scale 1 before index cardiac arrest | 78 (99) | 79 (100) | >0.99 |
Initial rhythm | Â | Â | 0.72 |
   Ventricular fibrillation | 23 (29) | 25 (32) |  |
   Pulseless electrical activity | 35 (44) | 30 (38) |  |
   Asystole | 21 (27) | 24 (30) |  |
Bystander cardiopulmonary resuscitation | 42 (53) | 37 (47) | 0.43 |
Time interval from collapse to start of cardiopulmonary resuscitation (minutes) | 8 (1 to 12) | 5 (1 to 10) | 0.29 |
Time interval from collapse to return of spontaneous circulation (minutes) | 35 (22 to 49) | 39 (14 to 50) | 0.86 |
Hypertension | 36 (46) | 25 (32) | 0.07 |
Diabetes mellitus | 23 (29) | 16 (20) | 0.20 |
Previous history of heart disease | 31 (39) | 20 (25) | 0.06 |
Previous history of myocardial infarction | 12 (15) | 5 (6) | 0.07 |
Previous history of chronic heart failure | 12 (15) | 9 (11) | 0.48 |
Cause of cardiac arrest | Â | Â | Â |
   Acute coronary syndrome | 35 (44) | 20 (25) |  |
   Old myocardial infarction | 8 (10) | 7 (9) |  |
   Cardiomyopathy | 8 (10) | 4 (5) |  |
   Spasm of coronary artery | 4 (5) | 1 (1) |  |
   Others | 18 (23) | 14 (21) |  |
   Unknown | 6 (8) | 33 (42) |  |
Emergency coronary angiography | 44 (56) | 20 (25) | <0.01 |
Primary percutaneous coronary intervention | 23 (29) | 9 (11) | <0.01 |
Use of intra-aortic balloon pump | 44 (56) | 15 (19) | <0.001 |
Use of extracorporeal life-support | 21 (27) | 5 (6) | <0.001 |
Duration of hospital stay (days) | 16 (4 to 27) | 1 (0 to 11) | <0.001 |
Favorable neurological outcome | 24 (30) | 23 (29) | 0.86 |
   Good cerebral performance | 24 (30) | 23 (29) |  |
   Coma or vegetative state | 6 (8) | 1 (1) |  |
   Dead | 49 (62) | 55 (70) |  |
Thirty-day survival | 32 (41) | 23 (29) | 0.13 |