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Table 1 Patients' characteristics before surgery

From: Goal-directed fluid management based on pulse pressure variation monitoring during high-risk surgery: a pilot randomized controlled trial

Characteristic

Group

 

C (n = 16)

I (n = 17)

Sex, M/F

12/4

11/6

Age (years)

62 ± 10

63 ± 16

Weight (kg)

68 ± 16

66 ± 16

Height (cm)

170 ± 8

164 ± 9

Body mass index (kg/m2)

23 ± 4

24 ± 5

ASA II score

3

3

ASA III score

9

8

ASA IV score

4

6

Chronic disease

  

   Renal failure requiring dialysis

1

0

   Renal failure without dialysisa

5

6

   Cirrhosis

0

1

   Chronic obstructive pulmonary disease

6

8

   Hypertension

13

13

   Peripheral vascular disease

3

9b

   Coronary artery disease

1

3

   Other cardiopathy

5

8

   Diabetes mellitus

5

7

   Cerebrovascular disease

1

3

Preoperative biological tests

  

   Serum creatinine (μmol/l)

124 ± 90

132 ± 55

   Prothrombin time (percentage)

87 ± 13

80 ± 19

   Hemoglobin (g/dl)

11.3 ± 2.0

11.9 ± 2.5

   Platelets (/μl)

305,000 ± 108,000

301,000 ± 110,000

  1. ASA, American Society of Anesthesiology physical status; C, control; I, intervention. aSerum creatinine more than 130 μmol/l; bP < 0.05, control group versus intervention group.