Table 6.
Operative mortality of valve surgery for patients with EuroSCORE II information
| Variable | Observed events | EuroSCORE II | Expected events | O/E ratio (95% CI) |
|---|---|---|---|---|
| Operative mortality (n=6,744) | 194 (2.9) | 3.67±5.50 | 247.5 | 0.784 (0.677–0.902) |
| Primary SV surgery without combined procedure (n=2,482) | 36 (1.5) | 2.39±3.89 | 59.3 | 0.607 (0.425–0.841) |
| Aortic valve replacement (n=1,573) | 16 (1.1) | 2.28±3.19 | 44.0 | 0.364 (0.208–0.591) |
| Mitral valve replacement (n=220) | 8 (3.6) | 3.22±4.08 | 7.1 | 1.127 (0.485–2.220) |
| Mitral valve repair (n=537) | 5 (0.9) | 1.99±4.03 | 10.7 | 0.467 (0.171–1.036) |
| Tricuspid valve replacement (n=27) | 3 (11.1) | 3.42±3.76 | 0.9 | 3.333 (0.848–9.072) |
| Tricuspid valve repair (n=62) | 3 (4.8) | 2.64±5.11 | 1.6 | 1.875 (0.477–5.103) |
| Primary DV surgery without combined procedure (n=421) | 12 (2.9) | 3.14±3.96 | 13.2 | 0.909 (0.469–1.588) |
| Primary triple-valve surgery without combined procedure (n=75) | 2 (2.7) | 4.79±7.23 | 3.6 | 0.556 (0.093–1.835) |
| Patients history of cardiac surgery (n=923) | 59 (6.4) | 7.71±7.75 | 71.2 | 0.829 (0.631–1.069) |
| Second cardiac surgery (n=728) | 42 (5.8) | 7.73±7.84 | 56.3 | 0.746 (0.538–1.008) |
| Third or more cardiac surgery (n=195) | 17 (8.7) | 7.64±7.44 | 14.9 | 1.141 (0.664–1.827) |
Values are presented as number (%), mean±standard deviation, number, or O/E ratio (95% CI).
O/E ratio, observed/expected event ratio; CI, confidence interval; SV, single valve; DV, double valve.