Table 4.
Statistical analysis of risk factors associated with difficult heparin reversal
| Variable | Group A (n=89) | Group B (n=31) | p-value |
|---|---|---|---|
| Female | 28 (31.5) | 17 (54.8) | 0.021 |
| Age >65 yr | 36 (40.4) | 15 (48.4) | 0.441 |
| Body surface area <1.6 m2 | 36 (40.4) | 14 (45.2) | 0.647 |
| Left ventricular ejection fraction <40% | 7 (7.9) | 2 (6.5) | 1.000 |
| Diabetes mellitus | 31 (34.8) | 4 (12.9) | 0.022 |
| Hypertension | 46 (51.7) | 18 (58.1) | 0.114 |
| Chronic renal failure | 7 (7.9) | 5 (16.1) | 0.187 |
| Atrial fibrillation | 19 (21.3) | 5 (16.1) | 0.532 |
| Hemoglobin <12 mg/dL | 30 (33.7) | 8 (25.8) | 0.415 |
| Platelet count <150,000/μL | 17 (19.1) | 11 (35.5) | 0.121 |
| Initial activated clotting time >120 sec | 27 (30.3) | 14 (45.2) | 0.134 |
| Cardiopulmonary bypass time >200 min | 21 (23.6) | 12 (38.7) | 0.020 |
| Aortic cross-clamping time >120 min | 19 (21.3) | 13 (41.9) | 0.026 |
| Lowest rectal temperature <26°C | 6 (6.7) | 6 (19.4) | 0.049 |
Values are presented as number (%).