Table 2.
Comparison of Ward Patients and ITU Patients Receiving Standard-Dose LMWH Thromboprophylaxis
| ITU (n = 20) | Ward (n = 22) | Significance | |
|---|---|---|---|
| Mean anti-FXa, IU/ml | 0.10 | 0.25 | P < 0.001* |
| Range (SD) | 0.01–0.22 (0.06) | 0.01–0.45 (0.12) | |
| Number of patients with anti-FXa 0.2–0.4 IU/ml | 1 | 16 | |
| Mean age, yr | 50.6 | 61.1 | P = 0.049* |
| Range (SD) | 26–66 (11.8) | 21–91 (20.2) | |
| Mean weight, kg | 88.5 | 82.6 | P = 0.3* |
| Range (SD) | 60–120 (14.9) | 57–133 (20.6) | |
| Respiratory support | 19 intubated; 1 CPAP | 22 wall-oxygen; max FiO2 0.35 |
Definition of abbreviations: anti-FXa = anti–factor Xa; CPAP = continuous positive airway pressure; ITU = intensive therapy unit; LMWH = low-molecular-weight heparin.
*
Independent t test.