DB of 30 mmol/L appears to be associated with SB levels closer to physiological levels than 34 mmol/L. The bicarbonate dialysate, in the tested concentrations, did not appear to have a significant impact on intradialytic hypotension and interdialytic weight gain in maintenance HDF patients.

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Introduction and Aims: Arterial hypotension is one of the most common intradialytic complications. High ultrafiltration rates generally related to higher interdialytic weight gain are one of the major causes of this complication. Higher dialysate bicarbonate concentrations and consequent metabolic alkalosis have been associated with an increased risk of intradialytic hypotension. It has also been postulated that higher concentration of dialysate bicarbonate can be associated to greater salt and water retention and higher interdialytic weight gain. Both associations have a low level of

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