Preoperative Acute Normovolaemic Hemodilution (ANH) in combination with Hypotensive Epidural Anaesthesia (HEA) during knee arthroplasty surgery. No effect on transfusion rate. A randomized controlled trial [ISRCTN87597684]

Table 3 Blood loss and substitution for the patients.

	ANH 14	Non-ANH 14	P
Blood loss intraoperative, mL	131 (78)	111 (56)	0.45
Blood loss 1. postop. Hour, mL	295 (129)	204 (77)	0.03^*
Blood loss 2. postop. Hour, mL	192 (98)	118 (72)	0.03^*
Blood loss 3. postop. Hour, mL	132 (85)	111 (61)	0.47
Blood loss 24. postop hours, mL	1057 (292)	836 (280)	0.05^*
Blood loss 2. postop day, mL	109 (78)	83 (67)	0.36
Total blood loss, mL	1306 (300)	1026 (294)	0.02^*
Homologous blood transfusion (PRC), mL	386 (720)	343 (454)	0.85
Crystalloid first 24 hours, mL	3229 (582)	3312 (731)	0.75
Colloid first 24 hours, mL	679 (575)	377 (361)	0.12
Donated amount of blood, mL	877 (175)

ANH: Acute normovolaemic hemodilution; non-ANH: No acute normovolaemic hemodilution; Mean (SD) ^* significance

ISSN: 1471-2253