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.
Keywords: Cardiac resynchronization therapy; Heart failure; Left ventricular ejection fraction; Reverse cardiac remodelling.
© 2014 The Authors. European Journal of Heart Failure © 2014 European Society of Cardiology.