Abstract
The stepping-infuser of sodium cloride solation and the Ultrafiltrotion rate (UFR) controlling device were combined to th bicarbonate dialysis fluid sapply system. The stepping infuser could offer the vorieties of sodium concentration into the bicarbonate (or acetate) dialysate, amonge the any consective 10 steps. A single infusion interval was able to set up within one to 99 minutes. The UFR controlling device had the copacity up to 1.99 litter every hour. This new combination dialysis system could produce the bicarbonate dialysis fluid deliuery with any patterns of high-sodium gradient. The clinical trial of this new system prooued the remorkable benefitial effects rather than bicarbonate dialysis system alone, in the patients with refractorilly persistent hypotension.