Cardiac resynchronization therapy in heart failure patients with less severe left ventricular dysfunction

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Cardiac resynchronization therapy is beneficial in heart failure patients with LVEF ≤35% and electrical dyssynchrony. However, its effects among patients with less severe LV dysfunction have not been established. Recent post-hoc analyses of landmark CRT trials suggest that CRT benefit may be present in patients with LVEF >35% and is associated with improvement in cardiac reverse remodelling, all-cause mortality, and need for heart failure hospitalizations. This review summarizes the currently available literature regarding the potential impact of CRT in patients with more modest reductions in LVEF.

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