Final answer:
An A-V fistula is performed for long-term dialysis to prevent aneurysm formation, decrease thrombosis, and eliminate ischemia.
Step-by-step explanation:
An A-V fistula, or arteriovenous fistula, is performed for long-term dialysis for several reasons:
- It helps prevent aneurysm formation. By connecting an artery directly to a vein, the blood flow is redirected, reducing the risk of aneurysms.
- It decreases the occurrence of thrombosis or blood clot formation. The fistula creates a high-velocity bloodstream, ensuring proper blood flow and reducing the risk of clot formation.
- It eliminates ischemia, which is a lack of blood supply to tissues. The fistula allows adequate blood flow to the dialysis machine, optimizing the efficiency of the procedure.
Therefore, option C, eliminating ischemia, and option D, decreasing thrombosis, are both correct answers for why an A-V fistula is performed for long-term dialysis.