Differences Between Groups of Patients Defined by Salvage Index
| Variable | Salvage index < median (0.5) (n = 374) | Salvage index ≥ median (0.5) (n = 391) | P |
|---|---|---|---|
| Age (y) | 62 [53.6, 71.3] | 61.2 [52.6, 72.3] | 0.71 |
| Women | 77 (21.0) | 118 (30.0) | 0.002 |
| Arterial hypertension | 246 (66.6) | 266 (68.0) | 0.50 |
| Hypercholesterolemia (≥240 mg/dL) | 233 (62.0) | 259 (66.0) | 0.25 |
| Diabetes | 70 (18.7) | 83 (21.2) | 0.38 |
| Previous myocardial infarction | 70 (18.7) | 37 (9.5) | <0.001 |
| Previous PTCA | 34 (9.1) | 31 (7.9) | 0.56 |
| Previous coronary bypass surgery | 18 (4.8) | 12 (3.1) | 0.21 |
| Anterior myocardial infarction | 148 (39.6) | 177 (45.3) | 0.11 |
| Systolic blood pressure (mm Hg) | 140 [120, 160] | 139 [120, 150] | 0.33 |
| Diastolic blood pressure (mm Hg) | 80 [75, 90] | 80 [70, 86] | 0.10 |
| Heart rate (beats/min) | 72 [60, 84] | 72 [60, 80] | 0.67 |
| Initial perfusion defect (% of LV) | 26.6 [15.0, 46.0] | 21.0 [12.3, 37.0] | <0.001 |
| Type of therapy | <0.001 | ||
| Thrombolysis | 88 (23.5) | 43 (11.0) | |
| PTCA | 121 (32.3) | 130 (33.3) | |
| Stenting | 165 (44.2) | 218 (55.7) | |
| Interval from symptom onset to treatment (min) | 676 [210, 1154] | 440 [220, 1153] | 0.52 |
Data are number of patients (with % in parentheses) or median (with 25th, 75th percentiles in brackets). LV = left ventricle.