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| Categories | P value | HR (95% CI) |
|---|---|---|
| Root surgery | 0.702 | 0.503 (0.386–1.897) |
| Arch surgery | 0.114 | 0.569 (0.408–1.101) |
| Pericardial tamponade | <0.001 | 3.299 (1.884–8.727) |
| Coronary malperfusion | 0.004 | 3.015 (1.431–6.668) |
| Limb malperfusion | 0.033 | 2.238 (1.079–5.973) |
| CPB ≥240 min | 0.009 | 3.197 (1.311–6.381) |
CPB, cardiopulmonary bypass.
