Patent ID: 8182673

Claim:
An automated peritoneal dialysis system comprising: at least one dialysis fluid pump configured to pump a dialysis fluid to and from a patient's peritoneal cavity during a multi-cycle dialysis therapy, the multi-cycle dialysis therapy including a plurality of patient fills, dwells, and drains; at least one processor; and at least one memory device storing a plurality of instructions executed by the at least one processor during the multi-cycle dialysis therapy to: (i) control the dialysis fluid pumped by the at least one dialysis fluid pump to and from the patient's peritoneal cavity, (ii) calculate cumulative ultrafiltration, and (iii) reduce a prescribed fill volume if an amount of a prior incomplete one of the plurality of drains from the patient's peritoneal cavity causes the cumulative ultrafiltration at an end of the prior incomplete drain from the patient's peritoneal cavity to exceed a negative ultrafiltration limit.