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MediumCardiologyHeart failure with reduced ejection fractionau-racpau-amc

A 62-year-old man with ischaemic cardiomyopathy (left ventricular ejection fraction 30%) presents with exertional dyspnoea and ankle swelling. He is on frusemide only. His blood pressure is 120/70 mmHg and renal function is normal. Which additional medication is most important to initiate to improve survival?

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