Table 3 Data on the surgical operations depending on high or low fluid retention index (FRI) prior to anaesthesia induction
From: Preoperative fluid retention increases blood loss during major open abdominal surgery
Parameter | FRI < 3.5 (n = 61) | FRI ≥ 3.5 (n = 36) | Statistics |
|---|---|---|---|
Blood loss (ml) | |||
Gynaecology (n = 27) | 175 (100–300) | 200 (113–513) | P < 0.03 |
Upper GI surgery (n = 27) | 225 (50–575) | 250 (63–725) | |
Lower GI surgery (n = 31) | 150 (81–375) | 525 (150–1000) | |
Urology (n = 12) | 1000 (100–1800) | 850 (500–1300) | |
Blood loss/operating time (ml/h) | |||
Gynaecology | 120 (44–148) | 106 (79–163) | P < 0.03 |
Upper GI surgery | 55 (29–145) | 129 (72–282) | |
Lower GI surgery | 57 (32–120) | 84 (42–217) | |
Urology | 164 (71–248) | 204 (171–229) | |
Total fluid balance (ml) | |||
Gynaecology | 1361 (1032–1740) | 1674 (1395–2210) | P < 0.03 |
Upper GI surgery | 1569 (1362–2095) | 1778 (1372–2887) | |
Lower GI surgery | 1506 (1014–2047) | 1913 (1537–2194) | |
Urology | 1559 (560–1814) | 2122 (1489–2938) | |
Fluid balance in blood units (ml) | |||
Gynaecology | 915 (791–1113) | 1186 (818–1577) | P < 0.02 |
Upper GI surgery | 1105 (858–1467) | 1223 (902–1455) | |
Lower GI surgery | 954 (690–1456) | 1266 (1172–1447) | |
Urology | 845 (413–1214) | 1289 (1063–1542) | |