[EEG dynamics in patients with renal failure during treatment with hemodialysis and following kidney transplantation].

The authors conducted an EEG study of 28 patients with chronic renal insufficiency, 20 of whom were on a programme hemodyalysis and 8 were studied at different periods following kidney transplantation. Background registrations detected mild and moderate changes of the bioelectric brain activity, mainly with disorders of alpha-rhythm. Only in 1/3 of the patients there were moderate slow forms of activity of paroxysmal signs. A worsening of the EEG indices after hemodialysis, seen in 11 of the 20 patients was expressed in abundant polymorphic slow activity or paroxysmal hilateral synchronous discharges of a large amplitude and was combined with an appearance of neurological disorders. In a successful kidney transplantation there was a distinct normalization of the EEG picture, whereas in a rejection of the transplant there were signs of expressed anomalies of brain electrogenesis.