MSRA-0077
A 70-year-old man with a history of chronic heart failure due to ischaemic cardiomyopathy is being evaluated. He was discharged from the hospital two weeks ago after experiencing a heart attack. An echocardiogram conducted during his hospitalization revealed a left ventricular ejection fraction of 40%, but no valve issues were identified.
Despite his current regimen of furosemide, ramipril, carvedilol, aspirin, and simvastatin, he continues to experience shortness of breath with minimal exertion, such as walking 30 meters. On examination, his chest is clear, and there is only slight peripheral edema. What is the most appropriate next step in his management?