Table 5 Comparison of hemoglobin levels, postoperative variables, and outcomes between groups (patients without preoperative anemia)
No-iron group | Iron group | P-value | |
|---|---|---|---|
Blood drainage amount, mL | 839.9 ± 442.3 | 871.9 ± 455.9 | 0.522 |
Transfusion, n (%) | 150 (96.2%) | 88 (51.8%) | < 0.001 |
Use of tranexamic acid, n (%) | 150 (96.2%) | 160 (94.1%) | 0.45 |
Preoperative Hb, g/dL | 13.3 ± 0.9 | 13.5 ± 1.0 | 0.163 |
Postoperative Hb, g/dL | |||
First TKA POD-5 | 10.0 ± 1.2 | 9.6 ± 1.3 | < 0.001 |
Second TKA POD-5 | 10.0 ± 1.3 | 9.3 ± 0.9 | < 0.001 |
Second TKA POW-6 | 12.2 ± 0.9 | 12.2 ± 1.3 | 0.595 |
Change in Hb level (preoperative – POW-6), g/dL | 1.1 ± 0.9 | 1.3 ± 1.3 | 0.079 |
Infection rate, n (%) | 0 (0%) | 0 (0%) | 1 |