Cardiology clinics
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Heart failure with preserved ejection fraction (HFpEF) is a complex clinical syndrome based on traditional heart failure symptoms with documentation of increased left ventricular filling pressures and preserved left ventricular ejection fraction. The exact mechanisms that induce HFpEF are not known. ⋯ This article reviews the epidemiology, pathophysiology, and treatment of heart failure with preserved ejection fraction (HFpEF). Current practice guidelines focus on remedying volume overload, aggressively controlling hypertension, and treatment of comorbid conditions that contribute to decompensation.
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The renin-angiotensin-aldosterone system (RAAS) plays a critical role in the pathophysiology of heart failure with reduced ejection fraction (HFrEF). Targeting components of the RAAS has produced significant improvements in morbidity and mortality. ⋯ Angiotensin-receptor blockers may be used instead of ACE inhibitors in patients with intolerance, or in conjunction with ACE inhibitors to further reduce symptoms. Recent data support broader indications for aldosterone antagonists in heart failure, and the combination of an ACE-inhibitor and aldosterone antagonist has become the preferred strategy for dual blockade of the RAAS.