Abstract: BackgroundCardiac resynchronization therapy (CRT) is highly beneficial in patients with heart failure (HF) and left bundle branch block (LBBB); however, up to 30% of patients in this selected group are nonresponders.HypothesisWe hypothesized that clinical and echocardiographic variables can be used to develop a simple mortality risk stratification score in CRT.MethodsBest‐subsets proportional‐hazards regression analysis was used to develop a simple clinical risk score for all‐cause mortality in 756 patients with LBBB allocated to the CRT ...
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Topics: 
Internal medicine
Cardiology