A patient receives hemodialysis on Mondays and Thursdays. When should elective dental treatment be scheduled?

Correct answer: A. On Tuesday — the day after a dialysis session

• A. ✅ CORRECT — Treat on the DAY AFTER dialysis. Uremic toxins and fluid overload have been cleared, and — critically — the heparin given during dialysis has worn off (its half-life is only 1–2 hours, so hemostasis is normal by the following day). For a Monday/Thursday schedule that means TUESDAY or Friday.
• B. ❌ Immediately after dialysis the patient is systemically anticoagulated from the session's heparin and is often hypotensive and fatigued.
• C. ❌ Immediately before dialysis the patient is at their most uremic and fluid-overloaded, with the highest potassium and bleeding tendency.
• D. ❌ Wednesday is two days out and approaching the next session, so uremia and fluid load are rising again.

Note: Other rules: take BP in the NON-fistula arm and never use that arm for IV access; adjust drug doses for renal clearance; avoid NSAIDs; consider antibiotic prophylaxis for synthetic grafts per physician consultation.