抄録
In order to keep dialysate pH constant, CO2 bubbling method is utilized in bicarbonate dialysis with batch system. In this report, we tested pH stability in the closed circuit system with Rhodial 75 manufactured by Rhone-Poulenc.
As the system mixes two solutions in air tight tank, difference of Pco2 according to the adding point of bicarbonate solution was anticipated. Accordingly, Pco2 was determined in five kinds of mixing in which adding points were different.
Effect of three kinds of HCO-3 concentration, namely, 20, 25 and 30mEq/l on final blood pH were evaluated.
Blood pH were changed from 7.315±0.017 to 7.393±0.009, pCO2 from 50.68±2.61 to 43.3±1.04 and HCO3 from 25.34±0.36 to 25.62±0.16, respectively.
Thus, it was observed that bicarbonate dialysis with Rhodial 75 could ameriolate excessive increase of pH and kept stable HCO-3 concentration. Precipitation mf calclm and magnesium was not observed.
