Final answer:
Peritoneal Dialysis (PD) does not typically require the use of heparin since the blood does not leave the body, unlike in hemodialysis where heparin is used to prevent clotting in the extracorporeal circuit.
Step-by-step explanation:
When Peritoneal Dialysis (PD) is being used, it is not always necessary for the client to be on heparin. Heparin is an anticoagulant medication that is used to prevent blood clots. While heparin is commonly used during hemodialysis to prevent blood from clotting as it moves outside the body through the dialysis circuit, PD typically does not require anticoagulation because the blood does not leave the body in this treatment. PD involves the introduction of fluid into the peritoneal cavity, where it dwells and filters waste products from the blood across the peritoneal membrane. The exchange of waste happens without directly exposing blood to the external environment, thus typically reducing the risk of clot formation that is associated with extracorporeal circuits.