Task: Answer Verification
Input (English): Question: Is previous coronary artery bypass grafting a risk factor for aortic valve replacement?
Answer: The risk of AVR after previous CABG is similar to that for primary AVR+CABG. Valve replacement should, therefore, be pursued despite prior CABG when hemodynamically significant aortic stenosis develops. Furthermore, a circumspect approach to "prophylactic" AVR for mild aortic stenosis at primary CABG seems warranted.
Output (English): no