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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).