Table 5. Perioperative data in the initial procedure.
| Variables | Total cohort (n=98) | Group NR (n=89) | Group R (n=9) | P value† |
|---|---|---|---|---|
| CPB time (min) | 78 (62.75–98.75) | 78 (62.25–98) | 87 (73–105) | 0.315 |
| Cross-clamp time (min) | 48 (34.75–62.25) | 46.5 (34.25–61.75) | 67 (48–73) | 0.072 |
| CPB temperature (℃) | 33.55 (32–34.3) | 33.5 (32–34.38) | 34 (33–34.2) | 0.365 |
| Postoperative mechanical ventilation time (h) | 21.75 (8–50.25) | 21 (8–46.75) | 92 (18.25–813.5) | 0.030 |
| ICU stay after surgery (days) | 3 (2.0–5.0) | 3 (2–4.5) | 5 (2.25–43.75) | 0.047 |
| Postoperative hospital stay (days) | 9 (8.0–15.0) | 9 (8.0–13.0) | 18 (10.0–32.0) | 0.050 |
| Complications | ||||
| Pulmonary hypertensive crisis | 4 (4.1) | 4 (4.5) | 0 (0.0) | 0.516 |
| Delayed chest closure | 1 (1.0) | 1 (1.1) | 0 (0.0) | 0.749 |
| Infection | 4 (4.1) | 3 (3.4) | 1 (11.1) | 0.263 |
| Pericardial effusion | 3 (3.1) | 3 (3.4) | 0 (0.0) | 0.576 |
| ≥ moderate MR at 24 h after surgery | 23 (23.5) | 18 (20.2) | 5 (55.6) | 0.083 |
| ≥ moderate MS at 24 h after surgery | 3 (3.1) | 2 (2.2) | 1 (11.1) | 0.452 |
Group NR: Group (had no MV reoperations); Group R: Group (had MV reoperations). Data are reported as the median (IQR) or n (%). †, the P value shows the difference between Group NR (n=89) and Group R (n=9). CPB, cardiopulmonary bypass; ICU, intensive care unit; MR, mitral valve regurgitation; MS, mitral valve stenosis; MV, mitral valve; IQR, interquartile range.