Table 1 Demographic characteristics of the patients studied

Age (year)

34 ± 5.76

75 ± 7.64*

 < 0.001

Weight (kg)

65.15 ± 19.39

71.48 ± 22.56

0.420

Blood sugar (mmol/L)

5.3 ± 1.39

6.6 ± 1.74

0.283

Infusion volume (mL)

825 ± 125

795 ± 175

0.416

Albumin (g/L)

46 ± 6.63

43 ± 7.54

0.257

BUN (mmol/L)

5.48 ± 0.75

6.36 ± 1.21

0.247

CREA (μmol/L)

63.08 ± 16.33

68.66 ± 18.11

0.659

Blood pressure (MAP, mmHg)

94 ± 4.41

97 ± 11.1

0.674

Heart rate (bpm)

76.4 ± 11.67

85.4 ± 16.46

0.398

Operation time (min)

107 ± 75.60

93 ± 20.75

0.730

maintenance time of anesthesia (min)

135 ± 40.57

165 ± 75.26*

0.039