In hemodialysis, the term 'reuse' refers to the cleaning and disinfecting of:

• A. Dialyzers
• B. Bloodlines
• C. Dialysis machines
• D. Water treatment system

Answer: (A)

Reuse in hemodialysis means reprocessing the dialyzer after a treatment so it can be used again. The dialyzer is the component that actually performs filtration, and its membrane must be cleaned, disinfected, and checked to ensure it remains intact and safe for another use. Bloodlines are designed for single use and are discarded after each patient, while dialysis machines and the water treatment system are maintained and serviced regularly but are not the part that is described by the term reuse. Reprocessing the dialyzer reduces waste and cost but requires strict procedures to prevent contamination and preserve membrane function.