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Table 4 Patients receiving blood substitution (units of packed red cells).

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

4

 

3 Units

1

0

 

>3 Units

1

2

 

Average transfused, mL

386

343

0.85

  1. ANH: Acute normovolaemic hemodilution; non-ANH: No acute normovolaemic hemodilution