Left bundle branch area pacing with stylet driven lead in third-degree atrioventricular block following Morrow surgery

Hypertrophic cardiomyopathy (HCM) is a rare genetical myocardial disease characterized by a pathologic increase in left ventricular thickness not explained by abnormal loading conditions.1 One of the major complications in HCM is left ventricle outflow tract obstruction (LVOTO) caused by an anomalous systolic anterior mitral movement. Despite emerging pharmacologic therapy,2 such as a potential alternative to reduce symptomatic LVOTO septal myectomy (SM), surgical resection of small sections of muscle tissue in the proximal ventricular septum remains one of the most effective treatments.