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Table 3 Blood pressure measurements and pulsewave velocity grouped according to dialysate calcium concentration

From: Do higher dialysate calcium concentrations increase vascular stiffness in haemodialysis patients as measured by aortic pulse wave velocity?

Dialysate calcium

1.0 mmol/

1.25 mmol/l

1.35 mmol/l

≥1.5 mmol/l

SBP1 mmHg

150.3 ± 28.8

144 ± 30.3

149.2 ± 28.1

150.8 ± 27.7

DBP1 mmHg

79.7 ± 14.1

76.6 ± 14.9

81.7 ± 16.3

80.8 ± 13.9

SBP2 mmHg

151.4 ± 22.5

147.6 ± 30.7

149.5 ± 29.5

148.5 ± 14.9

DBP2 mmHg

81.1 ± 14.6

79.8 ± 16.6

81.5 ± 18.1

77.3 ± 12.7

PP1 mmHg

70.5 ± 20.9

67.3 ± 22.8

67.6 ± 19.0

70.0 ± 20.8

PP2 mmHg

70.3 ± 16.2

67.8 ± 18.8

68.1 ± 18.8

69.3 ± 16.4

%Δ SBP

0(−11.4to15.2)

2.6(−5.9 to 41.9)

0 (−10.6 to 12.5)

−4.1 (−10.8 to 7.3)

%Δ DBP

2.5 (−12.1 to 16.1)

4.3 (−6.3 to 14.3)

−4.4 (−12.4 to 11.9)

−4.3 (−10.8 to 1.3)

PWV1 ms-1

9.64 ± 1.94

9.41 ± 2.17

9.75 ± 1.96

9.69 ± 2.13

PWV2 ms-1

10.45 ± 1.98

9.79 ± 2.25

10.21 ± 2.18

9.6 ± 2.11

%Δ PWV

5.6 (−3.2 to 17.8)

5.3 (−5.1 to 18.8)

2.6 (−10 to 21.8)

1.3 (−11.8 to 10.9)

SBPao1 mmHg

150.7 ± 32.1

144.7 ± 35.7

150.8 ± 33.2

153.4 ± 30.8

SBPao2 mmHg

153.0 ± 26.9

138.7 ± 32.9

150.9 ± 33.5

149.2 ± 30.6

AoAXi1 (%)

39.0 ± 16.6

37.5 ± 17.4

38.7 ± 16.2

41.4 ± 12.9

AoAXi2 (%)

40.4 ± 15.9

37.5 ± 14.2

40.3 ± 16.1

41.8 ± 14.4

BrAXi1 (%)

6.7 (−17.3 to 31.2)

−1.6 (−34.8 to 25.4)

4.1 (−29.7 to 31.2)

12.3 (−12.3 to 29.7)

BrAXi2 (%)

3.9 (−28.6 to 27.9)

−8.1 (−23.5 to 25.5)

4.3 (−20.2 to 25.5)

8.9 (−16.8 to 33.9)

DRA1

36.7 ± 15.8

44.7 ± 23.6

40.3 ± 16.6

38.1 ± 12.3

DRA2

42.1 ± 15.3

46.7 ± 21.1

43.5 ± 16.7

39.2 ± 16.2

Echo ej%

60(50–60)

60(55–60)

60(50–60)

60(50–60)

LVEDD cm

4.72 ± 0.75

4.65 ± 0.61

4.66 ± 0.73

4.70 ± 0.68

IVSD cm

1.27 ± 0.32

1.33 ± 0.25

1.28 ± 0.29

1.21 ± 0.24

PWD cm

1.28 ± 0.21

1.17 ± 0.24

1.18 ± 0.24

1.03 ± 0.18

ACEI/ARB (%)

25.9

37.3

27.9

19.1

β blocker (%)

24.1

25.4

27.3

38.1

CCB (%)

27.8

22

18.8

19.1

Hypo1 (%)

3.7

0

7.1

9.5

Hypo2 (%)

16.7*

3.3

7.1

0

  1. Peripheral systolic blood pressure predialysis (SBP1) and after six months (SBP2), peripheral diastolic blood pressure (DBP), pulse pressure (PP), percentage change (%), aortic-femoral pulse wave velocity (PVW), aortic systolic blood pressure (AoSBP). Aortic augmentation index (AoAXi), brachial artery augmentation index (BrAXi), diastolic relaxation index (DRA) were corrected for heart rate. Cardiac echo derived left ventricular ejection fraction (ej), left ventricular end diastolic diameter (LVEDD), intra-ventricular septal thickness (IVSD), and left ventricular posterior wall thickness (PWD). Symptomatic hypotensive episodes during dialysis (Hypo). Results expressed as percentage (%), mean ± SD, or median (interquartile range). Patients dialysing with dialysate calcium 1.5 mmol/l (n = 17) added to those dialysing using calcium 1.75 mmol/l (n = 4) summated due to low numbers. * p > 0.05 anova with post hoc correction vs high calcium dialysate (≥1.5 mmol/l).