Table 7.
Procedure time, blood transfusion rates, length of stay, discharge disposition, and need for mechanical ventilation for both bilateral TKA cohorts (analysis per patient)
| Variable | Same-admission staged (n = 149) | Staged (n = 1557) | p value |
|---|---|---|---|
| Procedure time (minutes), median (range)* | 262.5 (188–371) | 260 (163–670) | 0.295 |
| Acute posthemorrhagic anemia, number (%) | 16 (10.7) | 42 (2.7) | < 0.001 |
| Blood transfusion, number (%) | 139 (93.3) | 835 (53.6) | < 0.001 |
| Allogeneic blood transfusion, number (%) | 96 (64.4) | 250 (16.1) | < 0.001 |
| Length of stay (days), median (range) | 11 (4–29) | 9 (2–35) | < 0.001 |
| Discharge disposition | |||
| Rehabilitation center, number (%) | 126 (84.6) | 714 (45.9) | |
| Higher level of care (intensive care unit), number (%) | 1 (0.7) | 19 (1.2) | < 0.001 |
| Other (eg, home), number (%) | 22 (14.8) | 824 (52.9) | |
| Mechanical ventilation, number (%) | 2 (1.3) | 10 (0.6) | 0.897 |
* Procedure time was recorded in 82 of 149 same-admission staged and 1071 of 1557 staged bilateral TKA cases.