Table 4. Binary logistic regression analysis on factors for the groups with and without PMV.
| Variables | OR | 95% CI | P value |
|---|---|---|---|
| Age | 1.022 | 0.994–1.050 | 0.124 |
| BMI | 1.105 | 0.987–1.147 | 0.105 |
| Hypertension | 0.807 | 0.383–1.697 | 0.571 |
| Previous coronary artery disease | 3.081 | 0.235–40.369 | 0.391 |
| WBC | 1.103 | 1.008–1.206 | 0.033 |
| Hb | 0.988 | 0.973–1.004 | 0.130 |
| PLT | 0.990 | 0.982–0.998 | 0.013 |
| CRP | 0.999 | 0.993–1.005 | 0.840 |
| sCr | 0.999 | 0.995–1.004 | 0.773 |
| sCyC | 2.337 | 1.249–4.373 | 0.008 |
| ALB | 1.034 | 0.962–1.111 | 0.366 |
| Fibrinogen | 0.874 | 0.637–1.200 | 0.406 |
| Triglyceride | 1.061 | 0.790–1.424 | 0.695 |
| D-dimer | 0.990 | 0.971–1.009 | 0.303 |
| CABG/MVR/MVP/TVP (%) | 2.604 | 0.796–8.514 | 0.113 |
| CPB time | 1.011 | 1.001–1.022 | 0.028 |
| Aortic cross-clamp time | 0.994 | 0.984–1.004 | 0.221 |
| DHCA time | 1.002 | 0.974–1.032 | 0.868 |
| Drainage volume 24 hours after surgery | 1.000 | 1.000–1.001 | 0.079 |
P<0.05 was considered statistically significant. PMV, prolonged mechanical ventilation; BMI, body mass index; WBC, white blood cell; Hb, hemoglobin; PLT, platelet; CRP, c reactive protein; sCr, serum creatinine; sCyC, serum cystatin C; ALB, albumin; CABG, coronary artery bypass graft; MVR, mitral valve replacement; MVP, mitral valvuloplasty; TVP, tricuspid valvuloplasty; CPB, cardiopulmonary bypass; DHCA, deep hypothermic circulatory arrest.; OR, odds ratio; CI, confidence interval.