ATTENUATIONS IN TISSUE DOPPLER-DERIVED LEFT VENTRICULAR SYSTOLIC VELOCITY PREDICT AN AMPLIFIED RISK OF LETHAL ARRHYTHMIAS IN ICD RECIPIENTS INDEPENDENTLY OF EJECTION FRACTION

Tissue doppler-derived systolic mitral annular velocity (S') is a powerful predictor of death, but its ability to forecast lethal arrhythmias in ICD and CRT±ICD recipients is unknown. Because longitudinal myocytes are the most sensitive to arrythmogenic triggers, we hypothesized that S', an index