Table 1 Demographic, clinical characteristics and outcomes of transplant recipients according to the degree of IAH.

From: Impact of intra-abdominal pressure on early kidney transplant outcomes

 

All patients

No IAH

Grade I

IAH

Grade II/III

IAH

N

205

45

117

43

Age, years1

61 (51–69)

61 (48–69)

62 (52–70)

61 (53–68)

Male sex, n (%)

133 (64.9)

20 (44.4)

77 (65.8)

36 (83.7)

Caucasians, n (%)

202 (98.5)

45 (100)

116 (99.1)

41 (95.3)

Months on dialysis, months1

18 (10–33)

13 (7–37)

17 (9–31)

29 (13–43)

BMI, kg/m2 2

25.9 ± 3.9

23.6 ± 3.4

26 ± 3.7

27.9 ± 3.6

Polycystic kidney disease, n (%)

40 (19.5)

7 (15.6)

27 (23.1)

6 (14)

Peritoneal dialysis as RRT, n (%)

83 (40.5)

25 (55.6)

45 (38.5)

13 (30.2)

First renal transplant, n (%)

173 (84.4)

35 (77.8)

104 (88.9)

34 (79.1)

Hypertension, n (%)

181 (88.3)

36 (80)

107 (91.5)

38 (88.4)

Diabetes, n (%)

34 (16.6)

3 (6.7)

21 (17.9)

10 (23.3)

Age (donor), years1

60 (50–72)

56 (46–64)

62 (51–72)

60 (50–72)

Male sex (donor), n (%)

134 (65.4)

29 (64.4)

75 (64.1)

30 (69.8)

Donation after cardiac death, n (%)

16 (7.8)

4 (8.9)

8 (6.8)

4 (9.3)

Donor KDPI, percentage points1

75 (53–96)

63 (43–88)

78 (56–96)

78 (52–96)

Surgery duration, min1

185 (170–214)

173 (160–209)

190 (170–215)

193 (175–220)

Cold ischemia time, hours1

16 (13–19)

17 (14–19)

17 (13–19)

16 (13–18)

HLA mismatches, number1

4 (4–5)

5 (4–6)

4 (4–5)

4 (3–5)

Day 0 mean IAP, mmHg1

12 (9.7–14)

8.3 (7–10.2)

12 (10.5–13)

16.3 (15–18)

Day 1 mean IAP, mmHg1

12.3 (9.7–14)

9 (8–10)

12.7 (11–13.4)

15.8 (14–17)

Day 2 mean IAP, mmHg1

12.5 (10–14)

9.5 (8.4–10.7)

12.7 (11–13.7)

15.8 (13.7–17.3)

72 h mean IAP, mmHg1

12.1 (10.4–13.9)

9.1 (8.1–9.9)

12.1 (11.1–13)

15.6 (14.6–16.8)

72 h mean MAP, mmHg1

93.9 (90.8–97.6)

93.8 (90.6–96.7)

94.2 (91.1–98.1)

92.7 (90–97)

72 h accumulated fluid balance, L1

3.9 (2.6–5.1)

3.9 (2.6–4.9)

3.9 (2.4–5.1)

3.9 (2–5.6)

Outcomes

Renal resistive index1

0.76 (0.7–0.83)

0.77 (0.7–0.82)

0.75 (0.7–0.8)

0.8 (0.73–0.88)

Graft failure or death at discharge, n (%)

13 (6.3)

1 (2.2)

6 (5.1)

6 (14)

Delayed graft function, n (%)

54 (26.3)

5 (11.4)

26 (22.6)

23 (54.8)

Postoperative complications, n (%)

86 (42)

20 (44.4)

41 (35)

25 (58.1)

SCr at discharge, mg/dL1

2 (1.51–3.19)

1.68 (1.33–2.22)

2.09 (1.51–3.03)

2.94 (1.8–4.62)

SCr at 3 months, mg/dL1

1.66 (1.31–2.14)

1.47 (1.16–1.78)

1.69 (1.33–2.2)

1.77 (1.42–2.65)

SCr at 6 months, mg/dL1

1.59 (1.29–2.01)

1.5 (1.17–1.69)

1.63 (1.29–2.1)

1.69 (1.44–2.05)

Days until SCr < 2.0 mg/dL1

17 (4–41)

8 (3–19)

17 (4–49)

25 (19–180)

Biopsy-proven Acute Rejection, n (%)

6 (2.9)

2 (4.5)

4 (3.5)

0 (0)

Length of stay, days1

14 (12–18)

13 (11.5–17.5)

14 (12–17)

16 (12–22)

  1. 1Reported as median (interquartile range).
  2. 2Reported as mean ± standard deviation.
  3. BMI body-mass index, HLA human leukocyte antigen, IAH intra-abdominal hypertension, KDPI Kidney Donor Profile Index, IAP intra-abdominal pressure, MAP mean arterial pressure, RRT renal replacement therapy, SCr serum creatinine.