What is the medical process called that supplements kidney function by filtering waste from the blood?

• A. Hemodialysis
• B. Peritoneal dialysis
• C. Ultrafiltration
• D. Renal therapy

Answer: (A)

The process that supplements kidney function by filtering waste from the blood is called hemodialysis. This medical procedure involves the use of a machine that removes waste, excess fluids, and toxins from the bloodstream when the kidneys are not functioning adequately. During hemodialysis, blood is drawn out of the body, filtered through a dialyzer (artificial kidney), and returned to the body after the impurities have been removed. This process is critical for individuals with chronic kidney disease or acute kidney injury who cannot perform these functions naturally.

While peritoneal dialysis is another method used to filter blood waste and involves the lining of the abdomen, it operates differently and is not the same as hemodialysis. Ultrafiltration, on the other hand, typically refers to the process of removing smaller particles and is generally not specifically associated with kidney function. Renal therapy is a broader term that might encompass various treatments for kidney issues, including dialysis and transplantation, but does not pinpoint the specific filtering action described in the question. Thus, hemodialysis is the precise term that directly answers the question about the medical process for filtering waste from the blood.