Table 1. Showing univariate comparison of preoperative characteristics between Group I (PG <20 mmHg, N=358) and II (PG ≥20 mmHg, N=113).
| Preoperative characteristic | Group I (%) | Group II (%) | P value |
|---|---|---|---|
| Male gender | 294 (82.1) | 88 (77.8) | 0.33 |
| Mean age in years (SD) | 53.6±16.0 | 50.6±16.4 | 0.08 |
| Body surface area | 1.97±0.2 | 1.95±0.2 | 0.42 |
| Marfan (%) | 19 (5.3) | 0 | 0.01 |
| Ejection fraction <50% (%) | 44 (12.2) | 12 (10.6) | 0.73 |
| AI >2+ | 192 (53.6) | 78 (69.0) | 0.004 |
| Previous surgery (%) | 33 (9.2) | 6 (5.3) | 0.24 |
| Ross | 20 | 1 | - |
| MVR | 3 | 1 | - |
| CABG | 3 | 1 | - |
| Congenital | 3 | 3 | - |
| Pericardiectomy | 1 | 0 | - |
| AVr | 3 | 0 | - |
| Preoperative echocardiography (%) | |||
| Bicuspid valve | 106 (29.6) | 58 (51.3) | 0.0001 |
| Mean LVEDD | 57.9±9.1 mm | 61.1±8.2 mm | 0.001 |
| Mean LVESD | 39.0±9.6 mm | 41.3±7.8 mm | 0.02 |
| Aortic dilatation | 252 (70.3) | 52 (46.0) | 0.0001 |
| Maximum aortic dilatation | 49.6±8.5 mm | 45.7±9.9 mm | 0.0007 |
| Annulus | 27.6±3.2 mm | 26.8±3.5 mm | 0.15 |
| Sinus | 41.5±5.9 mm | 39.1±7.1 mm | 0.02 |
| STJ | 37.5±6.1 mm | 34.3±7.3 mm | 0.005 |
| Ascending aorta | 44.4±9.1 mm | 42.2±10.4 mm | 0.17 |
SD, standard deviation; AI, aortic insufficiency; MVR, mitral valve replacement; CABG, coronary artery bypass grafting; AVr, aortic valve repair; LVEDD, left ventricular end-diastolic diameter; LVESD, left ventricular end-systolic diameter; STJ, sino-tubular junction