Skip to main content

Table 3 Total and ionized concentrations of magnesium and calcium according to treatment conditions in group StDi-1

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) 2.60 ± 0.12 2.50 ± 0.10 2.58 ± 0.13 2.50 ± 0.20 2.54 ± 0.23 0.817
 Ionized magnesium (mmol/L) 0.64 ± 0.03 0.59 ± 0.03 0.62 ± 0.04 0.60 ± 0.04 0.59 ± 0.03 0.146
 Total calcium (mg/dL) 8.96 ± 0.76 9.22 ± 0.78 9.16 ± 0.62 9.18 ± 0.76 9.02 ± 0.79 0.981
 Ionized calcium (mmol/L) 1.16 ± 0.09 1.15 ± 0.08 1.17 ± 0.06 1.14 ± 0.07 1.12 ± 0.11 0.926
 pH 7.38 ± 0.03 7.40 ± 0.03 7.40 ± 0.02 7.38 ± 0.03 7.39 ± 0.04 0.861
Post-dialysis values
 Total magnesium (mg/dL) 1.98 ± 0.11 2.04 ± 0.13 1.98 ± 0.13 1.88 ± 0.11 1.98 ± 0.04 0.283
 Ionized magnesium (mmol/L) 0.48 ± 0.06 0.47 ± 0.06 0.45 ± 0.06 0.47 ± 0.04 0.48 ± 0.05 0.229
 Total calcium (mg/dL) 9.08 ± 0.28 8.96 ± 0.25 9.18 ± 0.17 9.10 ± 0.22 9.12 ± 0.28 0.705
 Ionized calcium (mmol/L) 1.20 ± 0.02 1.19 ± 0.03 1.16 ± 0.05 1.18 ± 0.03 1.19 ± 0.03 0.524
 pH 7.42 ± 0.01 7.41 ± 0.03 7.42 ± 0.03 7.41 ± 0.02 7.41 ± 0.02 0.951
Pre-dialysis to post-dialysis
 Total magnesium (%) 76.3 ± 6.3 81.6 ± 4.5 76.9 ± 7.0 75.5 ± 5.4 78.4 ± 7.0 0.551
 Ionized magnesium (%) 75.3 ± 7.6 80.6 ± 10.2 72.6 ± 8.3 80.0 ± 9.1 81.9 ± 11.5 0.496
 Total calcium (%) 101.5 ± 6.1 97.6 ± 5.9 100.5 ± 5.4 99.6 ± 7.5 101.5 ± 6.2 0.843
 Ionized calcium (%) 103.8 ± 6.3 104.0 ± 5.2 99.5 ± 6.5 104.5 ± 5.2 106.4 ± 9.2 0.586
 pH 100.4 ± 0.3 100.2 ± 0.5 100.2 ± 0.3 100.3 ± 0.4 100.3 ± 0.3 0.827
Removal amount
 Magnesium (mg) 129 ± 97 126 ± 57 102 ± 72 128 ± 107 129 ± 55 0.979
 Calcium (mg) 472 ± 176 385 ± 183 362 ± 126 343 ± 152 470 ± 181 0.615
Albumin leakage (g/session) 3.5 ± 0.6 3.0 ± 0.3 4.3 ± 0.7 5.5 ± 0.7 3.0 ± 0.4 < 0.001