Table 1 Comparisons of pre- and intraoperative findings between the two groups
Group | Intravenous iron | Autologous whole blood | p |
|---|---|---|---|
n | 32 | 32 | |
Preoperative findings | |||
 Sex (male) | 16 (50%) | 17 (53%) | 0.802 |
 Age (years) | 21 (20–25) | 21 (20–24) | 0.47 |
 Height (cm) | 170.0 (160.7–176.8) | 169.5 (164.0–177.0) | 0.527 |
 Weight (kg) | 60.5 (54.0–71.8) | 63.0 (50.0–77.0) | 0.591 |
 Body mass index (kg/m2) | 22.0 ± 3.9 | 22.6 ± 5.3 | 0.579 |
 ASA physical status I | 32 (100%) | 32 (100%) | – |
Vital signs | |||
 Systolic blood pressure (mmHg) | 116 ± 9 | 118 ± 13 | 0.325 |
 Diastolic blood pressure (mmHg) | 72 ± 10 | 71 ± 9 | 0.664 |
Heart rate (beats/min) | 81 ± 12 | 81 ± 12 | 0.96 |
Intraoperative findings | |||
 Total operation duration (min) | 213 ± 39 | 230 ± 35 | 0.07 |
Average during surgery | |||
 Systolic blood pressure (mmHg) | 94 (90–97) | 93 (88–99) | 0.851 |
 Diastolic blood pressure (mmHg) | 52 (46–55) | 53 (48–59) | 0.371 |
 Heart rate (beats/min) | 79 (72–90) | 78 (77–91) | 0.51 |
Total amount of fluid input (mL) | |||
 Crystalloid (mL) | 1250 (1000–1975) | 1500 (645–2250) | 0.968 |
 Colloid (mL) | 650 (500–750) | – | – |
 Autologous whole blood (mL) | – | 640 (640–640) | – |
Hemorrhage (mL) | 900 (500–1138) | 1000 (700–1425) | 0.424 |
Urine output (mL) | 150 (120–250) | 215 (50–400) | 0.491 |