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Anaesthesia · Preoperative assessment: ASA class for dialysis-dependent renal failure
Sample itemA 58-year-old man with end-stage renal disease attends thrice-weekly haemodialysis without missed sessions. He has no other significant illness and is listed for elective arteriovenous fistula revision. What is his ASA physical status?
Original practice item, not a recalled exam question. Nothing here is recorded.
The answer and the reasoning
D. ASA III
In the ASA examples, end-stage renal disease on regularly scheduled dialysis is a severe systemic disease with functional limitation and falls in class III. Class IV is reserved for a constant threat to life, such as ESRD without regular dialysis or recent myocardial infarction.
Option by option
A. ASA IV
Class IV is a severe disease that is a constant threat to life; this man is stable on a regular programme.
B. ASA V
Class V is a moribund patient not expected to survive without the operation, which does not fit an elective fistula revision.
C. ASA II
Class II is mild systemic disease with no substantive limitation, such as well-controlled hypertension; dialysis dependence is more than that.
D. ASA III (correct)
Correct. ESRD maintained on regular dialysis is a severe but stable systemic disease, which is class III.
Source note: Original NextPrep sample item — pending expert review. This item is original practice material awaiting independent expert review, so confirm important facts in a standard textbook.
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