Table 2 Baseline characteristic of study population
Variables, n (%) | cPOTTS group n = 254 | Conventional group n = 246 | p value |
|---|---|---|---|
Demographic characteristics | |||
 Age, mean ± SD | 63.3 ± 10.8 | 64.4 ± 10.6 | 0.246 |
 Male | 165 (65.0) | 155 (63.0) | 0.649 |
 Body mass index, mean ± SD | 25.20 ± 3.87 | 25.44 ± 3.81 | 0.475 |
NYHA class | 0.059 | ||
 I | 39 (15.4) | 22 (8.9) | 0.029 |
 П | 121 (47.6) | 116 (47.2) | 0.914 |
 Ш | 84 (33.1) | 102 (41.5) | 0.052 |
 IV | 10 (3.9) | 6 (2.4) | 0.354 |
Echocardiogram | 254 | 245 | Â |
Ejection fraction (%) | 56.7 ± 3.3 | 57.1 ± 3.6 | 0.564 |
Coronary artery disease | 0.383 | ||
 Single-vessel | 13 (5.1) | 6 (2.4) | 0.117 |
 Double-vessel | 41 (16.1) | 41 (16.7) | 0.874 |
 Triple-vessel | 84 (33.1) | 76 (30.9) | 0.602 |
 Not investigated | 116 (45.7) | 123 (50.0) | 0.332 |
Combined diseases | |||
 Diabetes | 82 (32.3) | 68 (27.6) | 0.258 |
 Hypertension | 139 (54.7) | 135 (54.9) | 0.972 |
 COPD | 3 (1.2) | 6 (2.4) | 0.332 |
 Hemofiltration or dialysis | 0 | 5 (2.0) | 0.028 |
 Cerebrovascular accident /transient ischemic attack | 1 (0.4) | 3 (1.2) | 0.366 |
 Preoperative Hemoglobin g/L, mean ± SD | 114.99 ± 16.55 | 114.02 ± 19.99 | 0.555 |
Drugs taken | |||
 β-Receptor blocker | 45 (17.7) | 53 (21.5) | 0.281 |
 ACEI | 37 (14.6) | 32 (13.0) | 0.613 |
 Calcium antagonist | 28 (11.0%) | 36 (14.6) | 0.227 |
 Aprotinin | 119 (46.9) | 117 (47.6) | 0.874 |
 Others | 39 (15.4) | 30 (12.2) | 0.306 |
Type of surgery | 0.379 | ||
 Cardiac surgery (Coronary artery bypass graft) | 110 (43.3) | 97 (39.4) |  |
 Non-cardiac surgery | 144 (56.7) | 149 (60.6) |  |
 Hepatobiliary surgery | 37 (26.4) | 32 (21.5) | 0.613 |
 Gastrointestinal surgery | 48 (30.7) | 50 (33.6) | 0.688 |
 Gynecological surgery | 39 (23.2) | 36 (24.2) | 0.822 |
 Urinary surgery | 20 (19.7) | 31 (20.1) | 0.081 |