Left Ventricular Mechanical Insights Into Left Bundle Branch Pacing and Left Ventricular Septal Pacing

In patients with preserved or moderately reduced LV ejection fraction, LBBP exhibited LV mechanical efficiency comparable to that of spontaneous LV activation. Conversely, LVSP is a valuable option, but LV mechanics is impaired, showing a reduced GWE of the left ventricle. (Evaluation of Contemporary Cardiac Stimulation in Clinical Practice: Left, Biventricular, Right, and Conduction System Pacing [TREEBEARD]; NCT06324682).