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Tramadol Risk Dialysis — ESENeph MCQ

Instant feedback + full explanation. One question, done properly.

ModerateChronic Kidney DiseaseTramadol Risk DialysisESENeph

A 60-year-old man with CKD G5D on haemodialysis has chronic pain from diabetic neuropathy. He asks about Tramadol. Why is Tramadol particularly risky in dialysis patients?

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Correct answer: A — Tramadol and its active metabolite (O-desmethyltramadol) accumulate in renal failure, increasing seizure risk, serotonin syndrome risk, and respiratory depression; it is poorly dialysable

Tramadol is partially renally excreted and its active metabolite (M1, O-desmethyltramadol) accumulates significantly in CKD/ESKD. This increases the risk of seizures (Tramadol lowers seizure threshold), serotonin syndrome (particularly if co-prescribed with SSRIs/SNRIs), and respiratory depression. Tramadol is poorly removed by haemodialysis. BNF recommends dose reduction and extended intervals in renal impairment. Alternative analgesics for neuropathic pain in dialysis include low-dose Gabapentin (after dialysis), Pregabalin (renally adjusted), or topical agents.

Reference: BNF 2024 – Tramadol; NICE CG173 – Chronic Pain; KDIGO 2024