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Anaesthesia · Preoperative assessment: unstable angina before elective surgery
Sample itemA 66-year-old man listed for elective knee replacement reports chest pain at rest, increasing over the last week and relieved by sublingual nitrate. What is the best next step?
Original practice item, not a recalled exam question. Nothing here is recorded.
The answer and the reasoning
A. Postpone the operation and refer for cardiac evaluation and treatment
Rest angina of recent onset and worsening is unstable angina, an active cardiac condition. Elective non-cardiac surgery is postponed until the condition has been evaluated and treated, since proceeding carries a high risk of perioperative infarction.
Option by option
A. Postpone the operation and refer for cardiac evaluation and treatment (correct)
Correct. Unstable angina requires evaluation and treatment before elective surgery.
B. Proceed under general anaesthesia after a beta blocker an hour before
A single early beta-blocker dose does not stabilise an active coronary syndrome and may cause harm.
C. Proceed under spinal anaesthesia, as it avoids the stress of intubation
A regional technique does not remove the risk of infarction in an unstable coronary syndrome.
D. Proceed after a normal resting ECG on the day of surgery
A normal resting ECG does not exclude unstable coronary disease.
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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