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Table 2 Perioperative variables, median with (5-95% range), or number with proportion

From: Perioperative transfusion threshold and ambulation after hip revision surgery – a randomized trial

 

Restrictive group (n = 33)

Liberal group (n = 33)

P-value

Surgery

   

Type of surgery, no. (%)

   

Total revision

13 (43)

15 (45.5)

0.05

Acetabular component revision

9 (30)

15 (45.5)

 

Femoral component revision

6 (20)

2 (6)

 

Other

2 (7)

1 (3)

 

Type of anesthesia, no. (%)

   

General anaesthesia

26 (87)

31 (94)

0.41

Spinal anaesthesia

4 (13)

2 (6)

 

Pain management, no. (%)

   

Femoral nerve block

2 (7)

1 (3)

0.60

Local infiltration analgesia with catheter

2 (7)

1 (3)

0.60

Local infiltration analgesia without catheter

8 (27)

10 (30)

0.79

Epidural as postoperative pain management

11 (33)

17 (52)

0.31

Blood loss during surgery, mL

575 (150–2300)

900 (200–2900)

0.10

Urinary output during surgery, mL

340 (76–975)

300 (65–1000)

0.84

Fluids given during surgery, mL 1

   

Red Blood Cells

0 (0–490)

0 (0–980)

0.05

Crystalloids

1500 (500–3500)

1500 (300–3100)

0.64

Colloids

500 (0–1500)

750 (0–2000)

0.11

Last Hb measured during surgery, g/dL

9.9 (6.5-12.8)

10.4 (8.3-12.9)

0.31

Post Anaesthesia Care Unit (PACU) 1

   

Blood loss in drain if used, mL

150 (0–700)

150 (0–500)

0.73

Urinary output during stay at PACU, mL

121 (49–190)

260 (45–1000)

0.70

Transfusions of red blood cells in PACU, mL

0 (0–245)

0 (0–245)

0.43

Crystalloids given in PACU, mL

700 (200–1200)

1000 (200–2400)

0.03

Colloids given in PACU, mL

0 (0–500)

0 (0–500)

0.93

Haemoglobin concentration at discharge from PACU, g/dL

9.9 (7.9-12.0)

10.2 (8.9-14.4)

0.16

Postoperative period

   

Crystalloids given, mL

0 (0–4000)

500 (0–4000)

0.66

Colloids given, mL

0 (0–500)

0 (0–1500)

0.25

Total perioperative transfusions of red blood cells, mL

0 (0–1470)

245 (0–1225)

0.22

Total number of patients transfused, no. (%)

11 (37)

16 (48)

0.32

  1. Mean where indicated.
  2. Type of surgery, anesthesia, and perioperative fluid and pain management of patients undergoing hip revision surgery and randomized to receive transfusion of red blood cells at a haemoglobin concentration of 7.3 or 8.9 g/dL, restrictive group and liberal group, respectively.
  3. 1One patient in the liberal group was transfused 1,100 mL of fresh frozen plasma (FFP) during sugery and one patient in the restrictive group was transfused 275 mL of FFP in the Post Anasthesia Care Unit. No further transfusions of FFP was given nor did any patients receive transfusion of platelets during the trial.