Table 1: Perioperative changes in standard laboratory-based tests for coagulation.
Units and reference values are indicated in parenthesis. Hct: hematocrit, PT: prothrombin time, INR: international normalized ratio, aPTT: activated partial thromboplastin time. Preop 2 day: 2day before operation; Postop 1 h: 1 h after operation.
| Preop2 day | Postop1 h |
PT (s, 11.4–14.2) | 12.3 | 18.5 |
PT INR (0.8–1.2) | 0.92 | 1.57 |
aPTT (s, 29–45) | 34.9 | 58.0 |
Fibrinogen (mg/dL, 170–350) | 399 | 147 |
Platelet (×103/μL, 29–45) | 236 | 94 |