Table 1.
Characteristics of Unmatched and Propensity Matched Patients
| Characteristics | Unmatched Patients(n = 1120) | Matched Patients(n = 165) | ||||
|---|---|---|---|---|---|---|
| Sternotomy(n = 837) | MIMVS(n = 283) | p Value | Sternotomy(n = 165) | MIMVS(n = 165) | p Value | |
| Age (years) | 57.5 ± 8.3 | 46.7 ± 7.2 | 0.000 | 52.6 ± 7.0 | 51.5 ± 6.8 | 0.1486 |
| Sex (female) | 485(57.9%) | 108(38.2%) | 0.000 | 56(33.9%) | 58(35.2%) | 0.817 |
| Body mass index | 25.2 ± 2.2 | 24.5 ± 1.3 | 0.000 | 25.6 ± 2.0 | 25.5 ± 2.0 | 0.6500 |
| Rheumatic valvular disease (n) | 468(55.9%) | 162(57.2%) | 0.384 | 94(57.0%) | 96(58.2%) | 0.487 |
| Hypertension | 302(36.1%) | 60(21.2%) | 0.000 | 36(21.8%) | 35(21.2%) | 0.893 |
| Diabetes mellitus | 143(17.1%) | 56(19.8%) | 0.304 | 30(18.1%) | 31(18.8%) | 0.887 |
| Preoperative creatinine (mg/dL) | 0.72 ± 0.19 | 0.77 ± 0.10 | 0.000 | 0.74 ± 0.13 | 0.75 ± 0.12 | 0.4683 |
| LVEF, % | 56.7 ± 6.9 | 61.6 ± 4.7 | 0.000 | 59.2 ± 4.2 | 59.5 ± 4.0 | 0.5069 |
| Current congestive heart failure | 259(30.9%) | 51(18.0%) | 0.000 | 38(23.0%) | 36(21.8%) | 0.792 |
| History of AF | 378(45.2%) | 85(30.0%) | 0.000 | 60(36.4%) | 58(35.2%) | 0.818 |
| COPD | 134(16.0%) | 26(9.2%) | 0.005 | 20(12.1%) | 18(10.9%) | 0.730 |
| Cerebrovascular disease | 76(9.1%) | 14(4.9%) | 0.027 | 11(6.7%) | 10(6.1%) | 0.822 |
| preoperative NYHA functional class | 2.6 ± 0.6 | 2.1 ± 0.5 | 0.0000 | 2.3 ± 0.5 | 2.3 ± 0.4 | 1.0000 |
| NYHA III-IV functional class, n (%) | 242(28.9%) | 43(15.2%) | 0.000 | 34(20.6%) | 32(19.4%) | 0.783 |
| Pulmomary Hypertension (≥60 mmHg) | 252(30.1%) | 78(27.6%) | 0.417 | 47(28.5%) | 46(27.9%) | 0.903 |
| EuroSCORE I | 6.5 ± 1.0 | 4.8 ± 0.8 | 0.000 | 5.9 ± 0.9 | 5.8 ± 0.8 | 0.287 |
AF = atrial fibrillation; COPD = chronic obstructive pulmonary disease; NYHA = New York Heart Association; EuroSCORE I = European System for Cardiac Operative Risk Evaluation, version I