<prompt> Please answer with one of the option in the bracket. Write reasoning in between . Write answer in between .Q:A 58-year-old man comes to the emergency department for complaints of crushing chest pain for 4 hours. He was shoveling snow outside when the pain started. It is rated 710 and radiates to his left arm. An electrocardiogram ECG demonstrates ST-segment elevation in leads V2-4. He subsequently undergoes percutaneous coronary intervention PCI and is discharged with aspirin, clopidogrel, carvedilol, atorvastatin, and lisinopril. Five days later, the patient is brought to the emergency department by his wife with complaints of dizziness. He reports lightheadedness and palpitations for the past 2 hours but otherwise feels fine. His temperature is 99.7F 37.6C, blood pressure is 9555 mmHg, pulse is 105min, and respirations are 17min. A pulmonary artery catheter is performed and demonstrates an increase in oxygen concentration at the pulmonary artery. What finding would you expect in this patient?? A: Drop of systolic blood pressure by 20 mmHg during inspiration, B: Harsh, loud, holosystolic murmur at the lower left sternal border, C: Normal findings, D: Pulseless electrical activity, E: Widespread ST-segment elevations,  <response>: This is a multiple choice question about a patient who recently underwent PCI for a myocardial infarction and now presents with dizziness, lightheadedness, palpitations, low blood pressure, and tachycardia. The key details in the stem are the recent PCI, current symptoms, and pulmonary artery catheter findings showing increased oxygen concentration in the pulmonary artery. The correct answer is B, a holosystolic murmur at the lower left sternal border, which would indicate acute mitral regurgitation due to papillary muscle rupture. This is a known complication that can occur after myocardial infarction and present with the symptoms described. Choices A, C, D, and E can be ruled out: A describes pulsus paradoxus which would not be expected. C describes normal findings which do not fit the clinical picture. D describes pulseless electrical activity which would present differently.E describes ECG findings of a new MI which does not fit the history.B: Harsh, loud, holosystolic murmur at the lower left sternal border 