From: 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]
ANH 14
Non-ANH 14
P
Zero
7
8
1 unit
4
0
2 Units
1
3 Units
>3 Units
2
Average transfused, mL
386
343
0.85