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Annals of Intensive Care

Table 1 Characteristics of the patients and IHD sessions

From: Comparison between regional citrate anticoagulation and heparin for intermittent hemodialysis in ICU patients: a propensity score-matched cohort study

Variables

Before inverse probability of treatment weighting

After inverse probability of treatment weighting

RCA group

Heparin group

p-value

RCA group

Heparin group

p-value

|d|

Patients, n

40

35

 

38

34

  

Male gender, n (%)

26 (65)

26 (74)

0.38

(66)

(73)

0.60

0.141

Age, years

66 ± 16

69 ± 14

0.36

67 ± 16

67 ± 16

0.97

0.013

Weight at ICU admission, kg

78.7 ± 20.2

78.9 ± 16.4

0.88

81.7 ± 19.8

76.9 ± 15.0

0.25

0.27

BMI at ICU admission, kg/m2

27.6 ± 6.4

28.1 ± 6.3

0.72

28.5 ± 6.3

27.1 ± 5.6

0.32

0.23

SAPS II at ICU admission, points

65 ± 22

62 ± 20

0.62

61 ± 21

63 ± 22

0.81

0.066

Sepsis in ICU stay, n(%)

26 (65)

24 (69)

0.74

(68)

(75)

0.56

0.151

Chronic dialysis patients, n(%)

9 (22.5)

9 (26)

0.75

(20.4)

(35)

0.26

0.329

IHD sessions, n

124

84

 

112

82

  

Vascular access for IHD, n(%)

     

0.98

 

 Arteriovenous fistula

3 (2.4)

11 (13.1)

0.004

(6.8)

(6.9)

 

0.005

 Temporary central femoral catheter

65 (52.4)

33 (39.3)

0.07

(48.4)

(44.7)

 

0.073

 Temporary central right jugular catheter

37 (29.9)

16 (19)

0.10

(24.0)

(27.8)

 

0.085

 Temporary central left jugular catheter

2 (1.6)

1 (1.2)

1

(1.9)

(1.4)

 

0.040

 Tunneled central venous access

17 (13.7)

23 (27.4)

0.02

(18.9)

(19.2)

 

0.005

Urea volume distribution, L

36.9 ± 6.2

39.1 ± 6.2

0.17

37.5 ± 6.3

38.7 ± 6.3

0.23

0.197

Sodium concentration of the dialysate, mmol/L

139 ± 2

139 ± 2

0.99

139 ± 2

139 ± 2

0.58

0.087

Bicarbonate concentration of the dialysate, mmol/L

33 ± 3

34 ± 2

0.13

33 ± 3

34 ± 2

0.10

0.247

Dialysate with calcium concentration of 1.50 mmol/L, n(%)

87 (70.2)

77 (91.7)

0.001

(70.4)

(89.6)

0.008

0.495

Dialysis membrane surface are of 2.1m2, n (%)

106 (85.5)

65 (77.4)

0.064

(86.3)

(70.8)

0.01

0.386

Systemic anticoagulation for an indication other than IHD, n(%)

33 (26.6)

30 (35.7)

0.04

(33.7)

(39.2)

0.50

0.113

Contraindication to heparin anticoagulation, n(%)

16 (13)

0 (0)

0.001

(13)

(0)

0.001

0.537

Invasive mechanical ventilation during IHD, n (%)

46 (37)

33 (39)

0.21

(36)

(41)

0.48

0.113

Vasopressor amine infusion during IHD, n (%)

39 (31)

36 (43)

0.006

(29)

(42)

0.06

0.289

  1. RCA, regional citrate anticoagulation, BMI, body mass index, SAPS, simplified acute physiology score, IHD, intermittent hemodialysis
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