[The ECG changes during the performance of hemodialysis using dialysis solution concentrates with different potassium levels in patients with chronic kidney failure and normokalemia].

Seven patients with chronic renal failure and normokalemia underwent 56 hemodialysis procedures (4 procedures each) using a dialysis solution concentrate containing 2.0 mmol/l (4 procedures) and 3.0 mmol/l potassium (4 procedures). Other electrolytes in the concentrates were the same. It was found that administration of 2.0 mmol/l K concentrate in 4 patients led to ECG changes indicative of hypokalemia. The changes can be managed by slowing down the speed of K elimination from the blood. This is achieved with the solution concentrate containing K 3.0 mmol/l.