Table 3.
Perioperative TXA usage: subgroup analysis.
| Patients receiving TXA (n = 405) | CTKA (n = 146) |
RATKA (n = 259) |
P value |
|---|---|---|---|
| Mean, std dev | Mean, std dev | ||
| Hb (gm/dl) POD1 | 10.8 ± 1.3 | 10.9 ± 1.3 | .35a |
| Δ Hb (gm/dl, preoperative−POD1) | 2.5 ± 1.1 | 2.5 ± 1.0 | .99a |
| Largest Δ Hb (gm/dl)c | 3.1 ± 1.1 | 3.0 ± 1.1 | .78a |
| Blood transfusion, n (%) | .59b | ||
| Yes | 1 (0.7%) | 1 (0.4%) | |
| No | 145 (99.3%) | 258 (99.6%) |
| Patients not receiving TXA (n = 81) | CTKA (n = 41) |
RATKA (n = 40) |
P value |
|---|---|---|---|
| Mean, std | Mean, std | ||
| Hb (gm/dl) POD1 | 10.4 ± 1.3 | 10.4 ± 1.5 | .99a |
| Δ Hb (gm/dl, preoperative−POD1) | 2.6 ± 1.2 | 2.6 ± 1.1 | .99a |
| Largest Δ Hb (gm/dl)c | 3.2 ± 1.2 | 3.4 ± 1.3 | .51a |
| Blood transfusion, n (%) | .36b | ||
| Yes | 1 (2.4%) | 3 (7.5%) | |
| No | 40 (97.6%) | 37 (92.5) |
Hb, hemoglobin; std dev, standard deviation; TXA, tranexamic acid.
a
t-test
b
Pearson’s chi square Test.
c
Preoperative Hb value−lowest Hb values within 2 d postoperatively.