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  • Title: Hemodialysis encephalopathy with osteomalacic fractures and muscle weakness.
    Author: Pierides AM, Edwards WG, Cullum UX, McCall JT, Ellis HA.
    Journal: Kidney Int; 1980 Jul; 18(1):115-24. PubMed ID: 7218657.
    Abstract:
    The hemodialysis unit at Columbia, South Carolina, opened in April, 1974. By June of 1977, 7 patients had died from dialysis encephalopathy, and 16 of the 51 surviving patients showed speech disorders, fits, and myoclonic jerks. Pathologic fractures were seen in 22 patients. Bone histomorphometry showed severe osteomalacia with minimal, if any, osteitis fibrosa, and serum alkaline phosphatase activity was normal. The mean serum aluminum concentration in 33 random patients was elevated at 83.5 microgram/liter (control group, 13.9 microgram/liter, P less than 0.001). The mean bone aluminum concentration in 4 patients who died from this syndrome was 307 ppm of bone ash (normal, less than 10 ppm). Dialysis fluid aluminum was high at 140 microgram/liter. Purification of the dialysis fluid with a water softener, reverse osmosis and a deionizer and abandoning extra-strength Basaljel resulted in a notable clinical and EEG improvement. None of 81 new patients who started hemodialysis between July of 1977 and July of 1979 after the change in treatment have developed any such symptoms. A syndrome of hemodialysis encephalopathy accompanied by pathologic osteomalacic fractures is described. Recovery is possible. The syndrome was eradicated after purification of the dialysis fluid.
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