Table 1 Patient characteristics

Age (years)

56 (12)

54 (12)

Male sex

364 (67%)

668 (67%)

ASA physical status

 I

116 (21%)

299 (30%)

 II

318 (57%)

588 (59%)

 III

123 (22%)

112 (11%)

Medical history

 Hypertension

256 (46%)

381 (38%)

 Diabetes mellitus

98 (18%)

156 (16%)

 Chronic renal disease

6 (< 1%)

8 (< 1%)

Tumor size (cm)

5.2 (2.3)

2.6 (1.4)

Size of mass removed (cm)

13.4 (3.3)

4.4 (2.2)

R.E.N.A.L. nephrectomy score

–

6.0 (1.8)

Warm ischemia time (min)

–

23.4 (12.6)

Duration of anesthesia (min)

207 (58)

224 (53)

Bleeding amount (mL)

171 (380)

232 (279)

Preoperative laboratory values

 Hematocrit (%)

41.4 (4.6)

42.5 (4.3)

 Neutrophil count (10³/μL)

4.31 (1.74)

3.77 (1.51)

 Lymphocyte count (10³/μL)

1.99 (0.63)

1.99 (0.61)

 Monocyte count (10³/μL)

0.44 (0.17)

0.42 (0.15)

 Platelet count (10³/μL)

264 (85)

252 (67)

 Creatinine (mg/dL)^a

0.88 (0.25)

0.85 (0.21)

 Blood urea nitrogen (mg/dL)^a

14.4 (4.4)

14.2 (3.9)

 Uric acid (mg/dL)^a

5.1 (1.4)

5.2 (1.4)

 Total protein (g/dL)^a

7.3 (0.5)

7.3 (0.5)

 Albumin (g/dL)^a

4.5 (0.4)

4.6 (0.4)

 Aspartate aminotransferase (IU/L)^a

22 (11)

23 (11)

 Alanine aminotransferase (IU/L)^a

23 (16)

25 (16)

 Alkaline phosphatase (IU/L)^a

68 (26)

65 (19)

 Total bilirubin (mg/dL)^a

0.7 (0.3)

0.7 (0.3)

 Cholesterol (mg/dL)^a

179 (42)

186 (36)

 Sodium (mEq/L)^a

141 (2)

141 (2)

 Potassium (mEq/L)^a

4.4 (0.4)

4.4 (0.4)

 Calcium (mEq/L)^a

9.4 (0.5)

9.4 (0.4)

 Phosphate (mEq/L)^a

3.6 (0.5)

3.5 (0.5)

Preoperative vital signs

 Systolic blood pressure (mmHg)

132 (14)

132 (16)

 Diastolic blood pressure (mmHg)

81 (10)

83 (11)

 Heart rate (beats/min)

74 (11)

74 (11)