Background: Cardiac resynchronization therapy (CRT) is recommended for patients with reduced ejection fraction (EF) and left bundle branch block (LBBB) on guideline-directed medical therapy (GDMT) for at least 3 months.… Click to show full abstract
Background: Cardiac resynchronization therapy (CRT) is recommended for patients with reduced ejection fraction (EF) and left bundle branch block (LBBB) on guideline-directed medical therapy (GDMT) for at least 3 months. For a subset of patients with wide LBBB and non-ischemic cardiomyopathy (NICM)
               
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