MediumCardiologyHeart failure with reduced ejection fractionca-mccqe1ca-rcpsc-im
A 72 year old woman with ischaemic cardiomyopathy has an ejection fraction of 28%, NYHA class II symptoms, sinus rhythm and normal kidney function. She currently takes ramipril, bisoprolol and spironolactone at guideline doses. Blood pressure is 118/70 mm Hg and potassium is 4.5 mmol/L. Which additional therapy provides the greatest mortality benefit?