His Bundle Pacing with Recruitment of Right Bundle Branch after Orthotopic Heart Transplant

Abstract

The incidence of permanent pacemaker implant after orthotopic heart transplant is between 2-24%. We present a 63year-old male with ischemic cardiomyopathy who underwent orthotopic heart transplant. His post-operative course was complicated by recurrent asystole from sinus bradycardia and complete heart block. He had baseline right bundle branch block and right ventricular dysfunction. The decision was made to proceed with His-bundle pacing to provide physiologic cardiac activation, and provide anatomical benefit for subsequent endomyocardial biopsy. He did well after receiving a His bundle pacemaker with recruitment of his right bundle branch.