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Table 1 Baseline characteristics of the patients and the operations

From: Oral nutrition or water loading before hip replacement surgery; a randomized clinical trial

Parameter

Fasting

Water

Nutrition

(n = 20)

(n = 18)

(n = 19)

Age (years)

68.5 (9.6)

66.4 (10.6)

65.2 (8.0)

Body weight (kg)

82.5 (20.0)

82.6 (10.8)

83.1 (13.8)

ASA class I/II/III (%)

16/63/21

6/69/25

24/63/13

Operating time (min)

115 (27)

103 (20)

99 (21)

Blood loss (mL)

450 (350–500)

400 (300–450)

400 (238–700)

Intravenous fluid (mL)

   

 Acetated Ringer’s

1000 (0)

1000 (0)

1000 (0)

 Colloid fluida

556 (162)

500 (177)

500 (177)

Epidural anesthesia after surgery (%)

35

33

47

Wound catheter after surgery (%)

40

56

37

Tranexamic acid (%)

50

56

26

Blood Hb

   

 Before surgery (g/dL)

13.32 (1.15)

13.53 (1.04)

13.56 (1.40)

 Morning of Day 2 (g/dL)

10.33 (1.26)

9.72 (1.73)

10.41 (1.85)

Erythrocyte transfusion

   

 Frequency (%)

30

44

42

 Units given (mean)

1.8

2.8

2.4

Body weight change Day 0 to Day 2 (%)b

+0.4 (2.3)

+1.9 (2.7)

+0.3 (1.7)

  1. aHydroxyethyl starch 130/0.4 (Voluven, Fresenius-Kabi).
  2. bOnly 12, 12, and 10 patients were weighed in each group on Day 3 as the others were unable to stand up on the scale.
  3. Day 0, the day before surgery; Day 1, day of surgery; Day 2, first postoperative day; Day 3, second postoperative day.