Task: Answer Verification
Input (English): Question: Does preoperative 6-minute walk test add prognostic information to Euroscore in patients undergoing aortic valve replacement?
Answer: The 6MWT is safe and feasible to carry out in patients with severe aortic stenosis before AVR, and provides potentially important functional and prognostic information to clinical assessment and the Euroscore risk score.
Output (English): yes