[Electrocardiographic changes in patients with chronic kidney failure treated by periodic hemodialysis].

The data of the analysis of 245 ECGs of 110 patients with chronic renal failure treated by periodic hemodialysis are presented. The lengthening of the electrical systole (the PQ interval) is the most frequent ECG finding - in 70% of the patients. It is followed by left ventricular hypertrophy - in 33.6%, ischemic changes - in 29.1%, rhythm disturbances - in 23.7%, conduction disorders - in 10.9% of the patients. The statistical analysis of the results shows that the lengthening of the electrical systole, the left ventricular hypertrophy and the rhythm disturbances are unfavourable prognostic signs. The normal ECG found only in 9.1% of the patients is a favourable prognostic sign.