From: 3-h drain clamping is not effective to reduce total blood loss after primary total knowledge
3 h drain clamping group (n = 43) | Control group (n = 43) | P value | |
---|---|---|---|
Total drained blood, mL | 338 ± 190.2 | 839 ± 339.8 | <0.001 |
Total blood loss, mL | 1226.9 ± 488.1 | 1127.1 ± 424.5 | 0.315 |
Hidden blood loss, mL | 893.1 ± 487.7 | 294.7 ± 531.8 | <0.001 |
Hemoglobin, g/dL | |||
Preoperation | 12.7 ± 1.3 | 13.0 ± 1.3 | 0.286 |
Postoperative 1 day | 9.7 ± 1.1 | 10.2 ± 1.5 | 0.216 |
Postoperative 2 day | 8.9 ± 1.0 | 9.6 ± 1.4 | 0.105 |
Hematocrit, percentage | |||
Preoperation | 36.8 ± 4.1 | 37.5 ± 3.6 | 0.397 |
Postoperative 1 day | 28.3 ± 3.3 | 29.2 ± 3.8 | 0.243 |
Postoperative 2 day | 26.6 ± 3.3 | 28.1 ± 3.7 | 0.061 |