Table 1 Demographic, anesthetic, and surgical variables with and without acute kidney injury

Demographic and Comorbidities

 Age (Years)

54 ± 18

60 ± 14.5

 Sex (Male), n (%)

149 (70)

1542 (58)

 BMI (kg/m²)

22 ± 4

23 ± 4

 Hypertension, n (%)

94 (44)

897 (34)

 Diabetes, n (%)

33 (15)

340 (13)

Anesthetic and Surgical Factors

ASA Physical Status, n (%)

 I

11 (5)

527 (20)

 II

89 (42)

1738 (65)

 III

92 (43)

387 (15)

 IV

19 (9)

12 (0.5)

Emergency Surgery, n (%)

70 (33)

304 (11)

Surgical Approach, n (%)

Open

168 (79)

1068 (40)

Videoscopic

30 (14)

1443 (51)

Robotic

15 (7)

156 (6)

Intraoperative Factors

 Case length (minutes)

288 [199,381]

224 [164,300]

 Tidal Volume (ml/kg)

6.58 [5.6, 7.7]

6.3[5.4, 7.6]

 Intraoperative blood loss (ml)

400 [200, 1000]

200 [100, 400]

 Red blood cell transfusion (units)

0 [0, 1]

0 [0, 0]

Hypotension Parameters

 Mean Arterial Pressure (mmHg)

77 ± 16

83 ± 15

 Number of Episodes of Hypotension (One Minute)

7.0 [2, 22]

3.0 [1, 7]

 Number of Episodes of Hypotension (Five Minutes)

2.0 [0, 9]

1 [0, 2]

 Number of Episodes of Hypotension (Ten Minutes)

1 [0, 5]

0 [0, 1]

 Number of Episodes of Hypotension (Fifteen Minutes)

1 [0, 4]

0 [0, 1]

 Percent of Case Time where MAP < 60 mmHg

4 [1, 12]

1[0, 4]