Table 2.
Predictive factors for postoperative complications after cardiac surgery (n = 362).
| Variable | Complication |
|||||
|---|---|---|---|---|---|---|
| Absent |
Present |
Univariate |
Multivariate |
|||
| n (%)/mean (SD) | n (%)/mean (SD) | p value | aOR | 95% CI | P value | |
| Age (years) | ||||||
| ≤50 | 44 (28.6) | 110 (71.4) | 0.651 | – | ||
| >50 | 64 (30.8) | 144 (69.2) | ||||
| Sex | ||||||
| Male | 58 (26.5) | 161 (73.5) | 0.085 | 1.79 | 1.08–2.96 | 0.024 |
| Female | 50 (35.0) | 93 (65.0) | 1 | |||
| Type of surgery | ||||||
| CABG | 52 (33.8) | 102 (66.2) | 0.094 | 0.25 | 0.09–0.69 | 0.008 |
| Valve | 50 (29.4) | 120 (70.6) | 0.32 | 0.12–0.85 | 0.023 | |
| Combined | 06 (15.8) | 32 (84.2) | 1 | |||
| DM | 43 (34.7) | 81 (65.3) | 0.146 | 1.29 | 0.77–2.15 | 0.338 |
| Hypertension | 31 (28.7) | 77 (71.3) | 0.759 | – | ||
| IHD | 53 (32.5) | 110 (67.5) | 0.313 | – | ||
| VHD | 54 (28.9) | 133 (71.1) | 0.681 | – | ||
| Asthma/COPD | 02 (28.6) | 05 (71.4) | 0.651 | – | ||
| CKD | 04 (36.4) | 07 (63.6) | 0.425 | – | ||
| Weight (kg) | 58.4 (12.9) | 62.2 (11.8) | 0.008 | 1.03 | 1.01–1.05 | 0.010 |
| LVEF | 54.3 (3.5) | 54.3 (3.4) | 0.877 | |||
| Preop Hb | 12.4 (1.7) | 12.4 (1.7) | 0.851 | |||
| Creatinine | 1.19 (0.27) | 1.18 (0.26) | 0.593 | |||
| CPB time | 89.1 (30.9) | 87.3 (26.9) | 0.579 | |||
| ACC time | 50.9 (20.4) | 52.2 (18.5) | 0.571 | |||
| Pump flow rate | 3.8 (0.6) | 3.7 (0.6) | 0.553 | |||
| CPB lactate | 4.4 (2.3) | 4.1 (0.6) | 0.058 | 0.73 | 0.49–1.09 | 0.122 |
| ACC lactate | 4.0 (2.9) | 3.9 (1.3) | 0.763 | |||
| On-pump Hb | 6.7 (1.2) | 6.9 (1.3) | 0.142 | 1.18 | 0.97–1.44 | 0.105 |
| ICU lactate | 4.1 (1.7) | 4.6 (1.7) | 0.004 | 1.19 | 1.02–1.39 | 0.031 |
| 6-hr lactate | 4.2 (1.9) | 4.5 (2.1) | 0.287 | – | ||
| 12-hr lactate | 2.7 (1.4) | 3.3 (1.8) | 0.002 | 1.21 | 1.03–1.43 | 0.018 |
| 24-hr lactate | 2.1 (1.0) | 2.3 (1.4) | 0.188 | |||
ICU: intensive care unit, SD: standard deviation, aOR: adjusted odds ratio, CI: confidence interval, CABG: coronary artery bypass grafting, DM: diabetes mellitus, IHD: ischemic heart disease, VHD: valvular heart disease, COPD: chronic obstructive pulmonary disease, CKD: chronic kidney disease, LVEF: left ventricular ejection fraction, Preop Hb: preoperative hemoglobin, CPB: cardiopulmonary bypass, ACC: aortic cross-clamp.
Model χ2 = 40.496, p < 0.001 and Hosmer and Lemeshow p = 0.809 indicates that the model fits the data. The classification table reports that overall expected model performance is 71%, that is, 71% of the cases can be expected to be classified correctly by the model.