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Table 2 Comparison of variables of patients undergoing either simultaneous heart-kidney transplantation with prior cardiac surgery or solitary kidney transplantation

From: Simultaneous heart-kidney transplantation results in respectable long-term outcome but a high rate of early kidney graft loss in high-risk recipients – a European single center analysis

Variables

HKTx with prior cardiac surgery

KTx

p-value

Mean; Median (Range)

N (%)

M. v.

Mean; Median (Range)

N (%)

M. v.

Recipient data

Age (in years)

52.83; 55.5 (37-63)

 

0 (0)

55.67; 58 (34-70)

 

0 (0)

0.399

Male gender

 

9 (75.0)

 

18 (66.7)

0.719

Height (in cm)

178.17; 177.5 (172-192)

 

171.63; 172 (156-184)

 

0.015

Weight (in kg)

80.58; 74.75 (60-106)

 

73.01; 72.5 (44-103)

 

0.127

BMI (in kg/m2)

25.31; 24.42 (20.28-30.64)

 

24.68; 24.92 (17.70-32.00)

 

0.628

Cause of renal failure

Nephritis

 

3 (25.0)

 

11 (40.7)

n.a.

Hypertension

 

1 (8.3)

 

1 (3.7)

CNI toxicity

 

3 (25.0)

 

0 (0)

Cystic kidney disease

 

1 (8.3)

 

1 (3.7)

Diabetes

 

0 (0)

 

3 (11.1)

Focal segmental glomerulosclerosis

 

1 (8.3)

 

2 (7.4)

Cardiorenal syndrom

 

2 (16.7)

 

0 (0)

Others

 

0 (0)

 

8 (29.6)

Undefined

 

1 (8.3)

 

1 (3.7)

Cause of cardiac failure

Dilated CM

 

4 (33.3)

 

n.a.

n.a.

Ischemic CM

 

5 (41.7)

Others/Uncertain

 

3 (25.0)

Number of cardiovascular risk factors

1.58; 1 (0-3)

 

1.93; 2 (1-3)

 

0.210

Previous HTx

 

3 (25.0)

 

0 (0)

0.024

Previous KTx

 

0 (0)

 

2 (7.4)

1.000

Prior dialysis

 

5 (41.7)

 

27 (100)

<0.001

Time on dialysis (in months)

11.23; 0 (0-57)

 

85.85; 86 (12-190)

 

<0.001

GFR prior Tx for patients without prior dialysis (in ml/min)

20.57; 20 (15-27)

 

n.a.

 

n.a.

PRA prior Tx (in %)

10.25; 0 (0-59)

 

2.04; 0 (0-55)

 

0.014

Highest PRA (in %)

11.50; 0 (0-59)

 

5.00; 0 (0-88)

 

0.180

Donor data

Age (in years)

42.08; 45.5 (19-57)

 

43.41; 49 (18-62)

 

0.642

Male gender

 

11 (91.7)

 

20 (74.1)

0.394

Height (in cm)

179.00; 180.0 (170-190)

 

176.71; 176.5 (160-190)

 

3 (11.1)

0.377

Weight (in kg)

83.33; 80.0 (65-120)

 

79.17; 75 (61-110)

 

0.398

BMI (in kg/m2)

25.94; 24.76 (21.91-35.92)

 

25.34; 24.69 (20.88-32.65)

 

0.655

Creatinine (in μmol/l)

79.17; 71 (43-181)

 

123.37; 80 (31-725)

 

0 (0)

0.425

ICU ventilation (in days)

4.33; 2 (1-18)

 

4.85; 4 (1-15)

 

0.271

Surgical details

Number of HLA mismatches

4.00; 4 (3-6)

 

3.70; 4 (2-5)

 

0.447

Operation time (in min)

136.70; 134 (67-205)

 

139.75; 134 (85-225)

 

0.820

Cold ischemia time KTx (in min)

1161.50; 1224.5 (657-2084)

 

1125.74; 1118 (308-2286)

 

0.845

PRBC (yes)

 

8 (66.7)

 

2 (7.4)

<0.001

Number of PRBC

1.88; 2 (1-3)

 

1.50; 1.5 (1-2)

 

0.002

FFP (yes)

 

7 (58.3)

 

1 (3.7)

<0.001

Number of FFP

4.00; 4 (2-9)

 

5.00; 5 (5-5)

 

0.008

  1. HKTx: simultaneous heart and kidney transplantation; KTx: kidney transplantation; BMI: body mass index CNI: calcineurin inhibitor; CM: cardiomyopathy; HTx: heart transplantation; GFR: glomerular filtration rate; PRA: panel reactive antibodies; ICU: intensive care unit; HLA: human leukocyte antigen; PRBC: packed red blood cells; FFP: fresh frozen plasma; M.v.: missing values; n.a.: not applicable/not applied. Bold values indicate statistical significance.