Table 2.
Intra-operative and post-operative blood loss by temperature category immediately post-operatively
| Outcome | Low temperature group (<36.0 °C) n = 26 | Low normal temperature group (36.0 °C–36.5 °C) n = 51 | Normal temperature group (>36.5 °C) n = 24 | p values* | |
|---|---|---|---|---|---|
| Mean blood volume loss mL (SD) | Surgeon A | 218 (184) | 155 (269) | 137 (199) | 0.77, 0.93 |
| Surgeon B | 130 (179) | 90 (324) | 125 (456) | ||
| Overall | 140 (205) | 101 (300) | 133 (302) | ||
| Mean haemoglobin loss g/L (SD) | Surgeon A | 22.2 (11.8) | 26.7 (11.1) | 24.1 (6.8) | 0.39, 0.53 |
| Surgeon B | 31.1 (10.9) | 30.9 (10.0) | 25.0 (9.7) | ||
| Overall | 26.4 (12.0) | 28.7 (10.7) | 24.5 (7.7) | ||
| Mean drain volume mL (SD) | Surgeon A | 51 (69) | 75 (77) | 90 (73) | 0.70, 0.48 |
| Surgeon B | 389 (189) | 348 (196) | 493 (105) | ||
| Overall | 213 (220) | 235 (208) | 260 (213) | ||
Surgeon A used intramedullary instrumentation, surgeon B used computer navigation
*p values are for the comparison between (a) low temperature and normal temperature groups and (b) low normal temperature and normal temperature groups