The cardiac conduction system is commonly diseased in patients with aortic valve disease, and the site of conduction defect in those with severe calcific aortic valve stenosis is most commonly the His bundle or infra-Hisian., The bundle of His traverses the membranous septum towards the left ventricular outflow tract (LVOT) running superficially over the crest of the ventricular septum, originating the left bundle branch. This anatomical course makes the His bundle and its left branch susceptible to mechanical injury during […]