title: The effects of zero magnesium dialysate and magnesium supplements on ionised calcium concentration in patients on regular dialysis treatment.
abstract: The effect of oral magnesium carbonate or aluminium hydroxide on serum ionised calcium, total calcium, aluminium and magnesium, was assessed in 31 patients with chronic renal failure, during and after one haemodialysis. The behaviour of ionised calcium and total calcium was the same in both groups. Each showed a slight fall during dialysis, which was not significant. Serum total calcium was 0.2-0.3 mmol/l (0.8-1.2 mg/dl) greater throughout the period of dialysis in the group taking aluminium hydroxide. Serum magnesium and aluminium were both lower in the group treated with magnesium carbonate. In the group taking magnesium carbonate, serum magnesium concentrations fell markedly during dialysis, but otherwise were maintained within the reference range by the use of a magnesium-free dialysate. These results show the effectiveness of magnesium carbonate oral phosphate-binding agents and zero magnesium dialysate in reducing serum aluminium without affecting the behaviour of serum calcium fractions during dialysis.
mesh_terms: D000284:Administration, Oral; D000536:Aluminum Hydroxide / Q000097:blood / Q000627:therapeutic use; D002118:Calcium / Q000097:blood*; D006801:Humans; D007676:Kidney Failure, Chronic / Q000097:blood / Q000188:drug therapy; D008274:Magnesium / Q000097:blood / Q000627:therapeutic use*; D009994:Osmolar Concentration; D010710:Phosphates / Q000097:blood; D006435:Renal Dialysis
chemical_list: D010710:Phosphates; C005479:magnesium carbonate; D000536:Aluminum Hydroxide; D008274:Magnesium; D002118:Calcium