what are the Recommendations for ICDs and CRTs
Referenced studies that support the recommendations are
summarized in the Online Data Supplements.?
For patients who have LVEF ?35%, sinus rhythm, left bundle branch block (LBBB) with a QRS duration ?150 ms, and NYHA class II, III, or ambulatory IV symptoms on GDMT, CRT is indicated to reduce total mortality, reduce hospi- talizations, and improve symptoms and QOL.