Skip to main content

Table 4 Total and ionized concentrations of magnesium and calcium according to treatment conditions in group StDi-2

From: Effects of on-line hemodiafiltration regimens and dialysate composition on serum concentrations of magnesium and calcium ions

Substitution volume [L/session] Pre-dilution Post-dilution HD (n = 6) P (5 groups)
60 (n = 6) 84 (n = 6) 8 (n = 6) 16 (n = 6)
Pre-dialysis values
 Total magnesium (mg/dL) 2.30 ± 0.35 2.27 ± 0.30 2.33 ± 0.32 2.22 ± 0.30 2.30 ± 0.28 0.983
 Ionized magnesium (mmol/L) 0.61 ± 0.10 0.56 ± 0.04 0.55 ± 0.06 0.53 ± 0.05 0.57 ± 0.05 0.545
 Total calcium (mg/dL) 9.08 ± 0.72 8.98 ± 0.65 8.95 ± 0.45 9.12 ± 0.47 9.13 ± 0.41 0.969
 Ionized calcium (mmol/L) 1.16 ± 0.08 1.16 ± 0.11 1.14 ± 0.07 1.15 ± 0.07 1.16 ± 0.05 0.992
 pH 7.38 ± 0.03 7.38 ± 0.01 7.38 ± 0.03 7.38 ± 0.02 7.38 ± 0.02 0.591
Post-dialysis values
 Total magnesium (mg/dL) 1.93 ± 0.14 1.95 ± 0.16 2.00 ± 0.15 1.95 ± 0.10 1.93 ± 0.12 0.911
 Ionized magnesium (mmol/L) 0.45 ± 0.05 0.44 ± 0.03 0.49 ± 0.02 0.43 ± 0.04 0.46 ± 0.02 0.166
 Total calcium (mg/dL) 9.92 ± 0.23 9.70 ± 0.18 10.0 ± 0.22 10.0 ± 0.25 9.95 ± 0.20 0.113
 Ionized calcium (mmol/L) 1.27 ± 0.06 1.21 ± 0.07 1.28 ± 0.02 1.27 ± 0.07 1.25 ± 0.04 0.207
 pH 7.41 ± 0.03 7.41 ± 0.03 7.42 ± 0.03 7.41 ± 0.02 7.41 ± 0.02 0.790
Pre-dialysis to post-dialysis
 Total magnesium (%) 85.1 ± 9.2 86.6 ± 6.2 86.4 ± 6.7 87.2 ± 7.9 84.6 ± 5.6 0.967
 Ionized magnesium (%) 73.9 ± 7.3 79.1 ± 11.8 79.3 ± 7.9 78.4 ± 8.3 81.3 ± 9.5 0.373
 Total calcium (%) 109.0 ± 7.9 108.4 ± 6.9 111.9 ± 4.0 110.1 ± 5.8 109.1 ± 4.1 0.878
 Ionized calcium (%) 109.8 ± 6.7 105.8 ± 4.4 112.8 ± 7.0 109.2 ± 2.5 107.5 ± 6.7 0.672
 pH 100.3 ± 0.4 100.5 ± 0.4 100.6 ± 0.5 100.4 ± 0.3 100.4 ± 0.3 0.750
Removal amount
 Magnesium (mg) 90 ± 95 67 ± 62 43 ± 72 128 ± 91 87 ± 94 0.513
 Calcium (mg) 196 ± 154 81 ± 85 187 ± 160 204 ± 90 202 ± 113 0.397
Albumin leakage (g/session) 3.1 ± 1.2 3.0 ± 0.4 4.3 ± 0.9 5.2 ± 0.9 2.8 ± 0.5 < 0.001