Table 2.
Surgery characteristics, thromboprophylaxis and treatments
| Characteristics | Any arthroplasty N = 499, n (%) | Total hip replacement N = 392, n (%) | Total knee replacement N = 107, n (%) |
|---|---|---|---|
| ASA score ≥3 | 188 (37.7) | 153 (39.0) | 35 (32.7) |
| Type of anaesthesia (regional) | 162 (32.5) | 112 (28.6) | 50 (46.7) |
| Duration of surgery (min) | 112.7 ± 28.0 | 105.3 ± 22.1 | 140.1 ± 30.2 |
| Preoperative administration of LMWH | 153 (28.9) | 113 (26.8) | 40(37.0) |
| Type of thromboprophylaxisa | |||
| LMWH | 493 (98.8) | 387 (98.7) | 106 (99.1) |
| UFH | 3 (0.6) | 2 (0.5) | 1 (0.9) |
| VKA | 16 (3.2) | 10 (2.6) | 6 (5.6) |
| Aspirin preoperative | 105 (21.0) | 77 (19.6) | 28 (26.2) |
| Duration of pharmacological thromboprophylaxis (days), mean ± SD | 18.5 ± 9.1 | 18.4 ± 7.5 | 19.0 ± 13.7 |
| Duration of pharmacological thromboprophylaxis | |||
| ≤7 days | 10 (2.0) | 7 (1.8) | 3 (2.8) |
| 8–21 days | 376 (75.4) | 295 (75.3) | 81 (75.7) |
| ≥22 days | 113 (22.6) | 90 (23.0) | 23 (21.5) |
| Graduated compression stockings | 8 (1.6) | 6 (1.4) | 2 (1.9) |
| Duration of hospital stay (days), mean ± SD | 26.5 ± 16.4 | 25.6 ± 13.1 | 29.6 ± 24.8 |
LMWH low-molecular-weight heparin, UFH unfractionated heparin, VKA vitamin K antagonist, SD standard deviation
a The total number of patients is higher than 499 because some of the patients received different types of thromboprophylactic agent concurrently