Skip to main content

Table 1 Baseline characteristics of the study population

From: Sodium bicarbonate prophylactic therapy in the prevention of contrast-induced nephropathy in patients admitted to the intensive care unit of a teaching hospital: a retrospective cohort study

Variable

Total number of CT* scans (n = 211)

No prophylaxis (n = 163)

Prophylaxis (n = 48)

p value

Male gender

125 (59.2 %)

99 (60.7 %)

26 (54.2 %)

0.42

Age (years)

65.3 (12.5)

64.3 (12.6)

68.6 (11.5)

0.04

Baseline sCr (μmol/L)

77.7 (71.5)

73.0 (53.0)

104.5 (134.0)

< 0.01

Baseline GFR$ (mL/min)

68.6 (37.9)

73.6 (38.4)

51.8 (31.0)

< 0.01

§APACHE II score

20.4 (8.3)

20.5 (8.5)

20.0 (7.5)

0.70

APACHE IV score

79.5 (30.1)

78.6 (31.6)

82.5 (24.4)

0.43

Predicted in-hospital mortality (%)

35.6 % (24.2 %)

34.4 (25.0)

39.8 (21.2 %)

0.18

SOFA# day 1

5.0 (6.0)

6.5 (5.0)

5.0 (5.0)

0.07

SOFA day 4

6.0 (5.0)

6.0 (7.0)

4.0 (5.0)

0.02

Comorbidities

    

 Diabetes

32 (15.2 %)

31 (19.0 %)

1 (2.1 %)

< 0.01

 Heart failure

11 (5.2 %)

6 (3.7 %)

5 (10.4 %)

0.09

 Sepsis

56 (26.5 %)

42 (25.8 %)

14 (29.2 %)

0.64

Haemoglobin < 6 (mmol/L)

57 (27.0 %)

42 (25.8 %)

15 (31.3 %)

0.45

Fluid balance

2529 (4701)

2401 (4639)

3123 (5695)

0.54

Patients receiving norepinephrine

54 (25.6 %)

43 (26.4 %)

11 (22.9 %)

0.63

Patients receiving aminoglycosides

12 (5.7 %)

10 (6.1 %)

2 (4.2 %)

1.00

  1. Dichotomous data are noted as the number of CT scans with the presence of the concerning variable in that group (percentage of the total number of CTs). Continuous data are noted as the mean (standard deviation) or median (interquartile range)
  2. * CT computed tomography, $ GFR glomerular filtration rate, sCr serum creatinine level, § APACHE Acute Physiology and Chronic Health Evaluation,# SOFA Sequential Organ Failure Assessment