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Updated: Aug 17, 2026

Benefits of Cardiac Resynchronization Therapy in an Asynchronous Heart Failure Model Induced by Left Bundle Branch Ablation and Rapid Pacing
Published on: December 11, 2017
Deployment of left ventricular lead from the ipsilateral side of central vein obstruction
Klaus K A Witte1, Sue J Kelly, John D Parker
1Division of Cardiology, University Health Network, University of Toronto, Canada. klauswitte@hotmail.com
Abstract:
Cardiac resynchronisation therapy improves symptoms and reduces mortality in patients with chronic heart failure. In patients with previously implanted devices, particularly automatic defibrillators, central venous stenoses provide a challenge to upgrading to resynchronisation devices. We present a patient with central venous obstruction secondary to previously implanted defibrillator leads, in whom we achieved coronary sinus pacing through the ipsilateral internal jugular vein.
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