Key result
Leadless pacemaker implantation proves feasible in a subpulmonic left ventricle in ccTGA with complete heart block.
Why the study?
Leadless pacemakers are designed for implantation in a subpulmonic morphologic right ventricle, but in some patients the subpulmonic ventricle is a morphologic left ventricle, creating unique implantation challenges.
Case Report (n=1)
Demonstrates the potential feasibility of leadless pacemaker implantation in a subpulmonic left ventricle for a patient with ccTGA and limited vascular access.
May support leadless pacing in select ccTGA cases; hypothesis-generating and should not change practice.
Leadless pacemakers are designed for implantation in a subpulmonic, morphologic right ventricle in patients with normal cardiac anatomy. In selected scenarios the subpulmonic ventricle may be a morphologic left ventricle. We present a case of a 38-year-old male patient with congenitally corrected transposition of the great arteries (ccTGA) with complete heart block who developed a pocket infection after implantable cardioverter-defibrillator (ICD) implantation. He had significant superior vena cava (SVC) stenosis, making vascular access for future lead placement difficult.
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Shah et al. (2022) conducted a case report in Congenitally corrected transposition of the great arteries (ccTGA) with complete heart block (n=1). Leadless pacemaker implantation in a subpulmonic left ventricle was evaluated. Leadless pacemaker implantation was described in a subpulmonic left ventricle in a 38-year-old male with congenitally corrected transposition of the great arteries and complete heart block.
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