<prompt> Please answer with one of the option in the bracket. Write reasoning in between . Write answer in between .Q:A 68-year-old male with a history of congestive heart failure presents to his cardiologist complaining of mild dyspnea on exertion and swollen ankles. His past medical history is also significant for hypertension and alcohol abuse. He has a 50 pack-year smoking history. He currently takes lisinopril, aspirin, and metoprolol. His temperature is 99F 37.2C, blood pressure is 13585 mmHg, pulse is 85min, and respirations are 18min. An echocardiogram reveals an ejection fraction of 35. His cardiologist adds an additional medication to the patients regimen. Two weeks later, the patient notices yellow halos in his vision. Which of the following medications did this patient most likely start taking?? A: Hydralazine, B: Furosemide, C: Dobutamine, D: Digoxin, E: Nitroprusside,  <response>: This is a clinical vignette about a 68-year-old male with a history of congestive heart failure, hypertension, and alcohol abuse who presents with worsening symptoms of heart failure. His physical exam and echocardiogram are consistent with decompensated heart failure with reduced ejection fraction. The question asks which additional medication was most likely added to his regimen that resulted in the side effect of seeing yellow halos in his vision two weeks later.The choices provided are all medications that could potentially be added in heart failure. Hydralazine A is a vasodilator, furosemide B is a diuretic, dobutamine C is an inotrope, digoxin D is a cardiac glycoside, and nitroprusside E is a vasodilator. The description of yellow halos in the vision makes digoxin toxicity the most likely cause. Digoxin can cause visual changes including yellow halos and blurred vision. The other medications would not be as likely to cause this specific visual disturbance.D: Digoxin 