[Changes in the alkaline-acid status and some plasma electrolytes in chronic hemodialysis patients].

Prior to and post hemodialysis, a determination of plasma potassium, sodium, calcium, phosphorus and the indices of acid-base state is performed in 16 patients with chronic terminal renal insufficiency, with 560 hemodialyses, applied once or twice a week with deionized water and dialysis solution with 1, 5 mEq/1 potassium. Considerable hypopotassemia was established after hemodialysis--3, 3 mEq/1 and in 35% of the cases--hypopotassemia under 3.0 mEq/1. Metabolite alkalosis was established after dialysis: elevated pH in blood from 7,353 to 7,491; standard bicarbonates--from 21, 2 to 29, 1 m Eq/1; basis-excess: from (-3, 78) to (+5, 26) mEq/1; buffer bases: from 41, 3 to 51, 0 Eq/1, normalization of the elevated phosphorus in plasma from 7, 4 mg% to 4, 6 mg%. No significant changes in plasma sodium and potassium, as well as pCO2 were established after hemodialysis.