Mean (and Standard Deviation) Values and 99% Confidence Intervals (CI) for Activated Partial Thromboplastin Time (APTT), Antigen-IIa (Anti-IIa) and Antigen-Xa (Anti-Xa) Activities Before and After Heparin Injection
| Hemorrhage risk factor | Measurement time | ||
|---|---|---|---|
| Preheparin injection | 2 h after injection | 4 h after injection | |
| APTT, s | |||
| Mean (and SD) | 27.6 (4.3) | 30.5 (8.7) | 29.5 (9.3) |
| 99% CI | 26.0–29.26 | 27.3 – 33.7 | 26.1 – 32.9 |
| Anti-IIa, U/mL | |||
| Mean (and SD) | 0.007 (0.010) | 0.027 (0.030) | 0.023 (0.025) |
| 99% CI | 0.003 – 0.011 | 0.026 –.028 | (0.014 – 0.032) |
| Anti-Xa, U/mL | |||
| Mean (and SD) | 0.006 (0.016) | 0.061 (0.052) | 0.036 (0.037) |
| 99% CI | 0.001 – 0.011 | 0.059 – 0.063 | 0.035 – 0.037 |