This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Valvular hea diseases, Subject name: Medicine
[{'content': 'A 65-year-old man with history of syncopal attacks on exeion and angina is undergoing hea valve surgery. The intra-operative appearance is shown below. Which kind of pulse is expected to present in this case before surgery? \nSelect and explain. \nA. Dicrotic pulse, B. Pulsus bigeminus, C. Pulsus bisferiens, D. Anacrotic pulse', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Aoic Stenosis Notice a calcified hea valve with three cusps. Taking into consideration age of patient with clinical finding of syncopal attacks and angina, Pulse- Slow rising pulse with low amplitude - Anacrotic pulse.', 'role': 'assistant'}]