A 67-year-old man presents to the emergency department with central crushing chest pain. the pain started when he was carrying grocery bags from the superstore to his house. the pain was severe and radiated to his neck and jaw. now he feels nauseated and apprehensive. he never had such severe pain before. he has a history of hypertension managed by hydrochlorothiazide 25 mg daily. on examination, he is alert but in distress. his blood pressure is 110/60 mm hg, pulse 82/min (regular), and respiratory rate is 20/min. his electrocardiogram reveals st elevations of 3 mm in leads v2, v3, and v4. which of the following valvular lesions is most likely to occur as a complication of the patient's condition?