title: Does long term haemofiltration provoke secondary hyperparathyroidism?
abstract: One thousand nine hundred and forty-nine haemofiltration procedures have been performed since 1976; 4 different types of haemofilters have been tested in gravimetric and volumetric haemofiltration machines. Balance studies revealed a diminished calcium intake of about 1/3 of that found in conventional dialysis. Magnesium balance is negative and leads to decreasing serum Mg values. Inorganic phosphate is removed in similar quantity to dialysis. PTH levels increase during 3--18 months of treatment, whereas 25-OH-D3 levels rapidly fell, gc-globulin- and HCT-levels did not change markedly. g-c globulin could be detected in filtrate samples in remarkable amounts, 25-OH-D3 was found in traces. Radiologically no apparent alteration occurred. We recommend Vitamin D supplementation to compensate for the losses and thereby avoid development of secondary hyperparathyroidism.
mesh_terms: D002118:Calcium / Q000097:blood; D006801:Humans; D006962:Hyperparathyroidism, Secondary / Q000209:etiology* / Q000517:prevention & control; D008274:Magnesium / Q000097:blood; D010710:Phosphates / Q000097:blood; D006435:Renal Dialysis / Q000009:adverse effects*; D014462:Ultrafiltration; D014807:Vitamin D / Q000627:therapeutic use
chemical_list: D010710:Phosphates; D014807:Vitamin D; D008274:Magnesium; D002118:Calcium