Heart rhythm : the official journal of the Heart Rhythm Society
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Randomized Controlled Trial Multicenter Study
Long-term outcomes of left bundle branch block in high-risk survivors of acute myocardial infarction: the VALIANT experience.
In survivors of myocardial infarction (MI), new left bundle branch block (LBBB) is associated with adverse outcomes, but its impact is not well described in post-MI patients with left ventricular (LV) systolic dysfunction and/or heart failure (HF). ⋯ In post-MI survivors with LV systolic dysfunction and/or HF, new LBBB was an independent predictor of all major adverse cardiovascular outcomes during long-term follow-up. This readily available ECG marker should be considered a major risk factor for long-term cardiovascular complications in high-risk patients after MI.