Task: Answer Verification
Input (English): Question: Does small prosthesis size in aortic valve replacement affect mortality?
Answer: Small aortic valve prosthesis size does not independently increase operative mortality following primary AVR. Increased morbidity and mortality among patients undergoing the implantation of small AV prostheses is related to the confounding effects of preoperative and operative risk factors. Annular enlargement may not always reduce mortality.
Output (English): no