Sympathetic Innervation Modulates Ventricular Repolarization and Arrhythmia Vulnerability After Myocardial Infarction
This study demonstrates that sympathetic modulation via the stellate ganglia dynamically reshapes ventricular arrhythmic vulnerability in chronic post-infarcted substrates by inducing regionally heterogeneous repolarization changes, a mechanism effectively captured by the RVI metric even when conventional stimulation-based inducibility remains unchanged.