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(B) Peritoneal Dialysis

Definition:
It is the movement of solutes and water from patient's blood across
a semipermeable membrane (which is the peritoneal membrane) to the
dialysis solution (dialysate).

This is carried out via a peritoneal catheter which is inserted into
the peritoneal cavity for infusion of the dialysate which is left to dwell
then; drained out via the catheter (Fig. 5.3).

(Fig. 5.3) Basic continuous

ambulatory peritoneal dialysis system, with

catheter, and dialysis solution container. On

the right, inflow and outflow are depicted.

Types:-
(1) CAPD (Continuous Ambulatory Peritoneal Dialysis):
In which the dialysate is always present in the peritoneal cavity and
is exchanged every 4-6 hours/day. This is the commonly used form of P.D
worldwide.