Table 3.
Blood loss details for THR, TKR, and UKR.
| Variable | THR (n = 393) | TKR (n = 403) | UKR (n = 74) | |||
|---|---|---|---|---|---|---|
| Preoperative Hb, g/L (SD) | 13.5 (1.4) | 13.2 (1.4) | 13.5 (1.6) | |||
| Mean Hb at POD1, g/L (SD) | 10.2 (1.5) | 10.6 (1.4) | 12.2 (1.5) | |||
| Mean Hb at POD2, g/L (SD) | 9.8 (1.4) | 10.1 (1.3) | 11.9 (1.5) | |||
| Mean loss at POD2, mL (SD) | ||||||
| Overall | 1505 (560) | 1322 (539) | P < .001a | 611 (358) | P < .001b | |
| Male | 1661 (578) | P = .01 | 1501 (632) | P < .001 | 628 (385) | P = .01 |
| Female | 1483 (539) | 1214 (440) | 594 (313) | |||
| Mean loss at POD2 as a percentage of patient blood volume (SD) | ||||||
| Overall | 34 (14) | 28 (12) | P < .001a | 13 (7) | P < .001b | |
| Male | 31 (11) | P < .001 | 27 (11) | P = .2 | 11 (7) | P = .004 |
| Female | 37 (14) | 29 (11) | 14 (8) | |||
| Mean loss at POD1, mL (SD) | 1381 (550) | 1094 (450) | P < .001a | 548 (340) | P < .001b | |
| Mean loss at POD1 as a percentage of loss at POD2 (SD) | 91 (27) | 86 (35) | 96 (55) | |||
| Mean intraoperative loss, mL (SD) | 179 (137) | NA | NA | |||
| Mean intraoperative loss as a percentage of loss at POD2 (SD) | 13 (11) | NA | NA |
NA, not applicable.
a
Comparing THR and TKR.
b
Comparing TKR and UKR.