Table 1.
Preoperative predictors of postoperative atrial fibrillation.
| Variable | AF | No AF | P value |
|---|---|---|---|
| Ejection fraction | 43 ± 0.5 | 54 ± 0.4 | 0.100 |
| Weight | 72.31 ± 11.4 | 68.84 ± 13.7 | 0.006 |
| Preoperative digoxin use | 5% | 13% | 0.040 |
| Preoperative beta-blocker use | 33% | 36% | NS |
| Age | 58.52 ± 9.4 | 54.81 ± 9.07 | 0.011 |
| Preoperative hematocrit | 39.04 ± 5.2 | 41.4 ± 5.6 | 0.004 |
| pO2 on air | 77.01 ± 18.3 | 90.03 ± 24.3 | 0.000 |
| pCO2 on air | 33.47 ± 6.2 | 34 ± 1.1 | NS |
| Left main disease | 8.8% | 3.1% | 0.010 |
| Preoperative serum creatinine | 8% | 2.8% | 0.000 |
| Diabetes | 51.8% | 25.4% | 0.026 |
| Hypercholesterolemia | 46.3% | 38.4% | 0.160 |
| Hypertriglyceridemia | 41.4% | 35.5% | 0.077 |
| Smoking | 50% | 30% | 0.027 |
| Opium use | 12.1% | 14.4% | 0.900 |
| Chronic obstructive pulmonary disease | 8.3% | 4.5% | 0.000 |
| Congestive heart failure | 7.9% | 2.8% | 0.000 |
| Aspirin use | 91% | 93% | 0.450 |
| Preoperative nipride use | 26.8% | 31% | 0.040 |
| Preoperative heparin use | 12.1% | 4.4% | 0.060 |
Notes: Results are expressed as mean ± standard deviation. Differences were considered significant at P < 0.05.
Abbreviations: AF, atrial fibrillation; NS, not statistically significant.