Synchronized left anterior/posterior fasciculars pacing - a modified strategy for difficult left ventricular lead...

Area of Science:

• Cardiology
• Electrophysiology
• Medical Devices

Background:

• Cardiac resynchronization therapy-defibrillator (CRT-D) is effective for ischemic heart failure (HF).
• Left ventricular lead implantation poses significant challenges in CRT-D procedures.
• Complete right bundle branch block (cRBBB) can complicate CRT-D lead placement.

Purpose of the Study:

• To describe a novel bailout approach for difficult left ventricular lead implantation during CRT-D.
• To evaluate the efficacy of this alternative pacing strategy in a patient with ischemic cardiomyopathy and cRBBB.
• To assess the impact on QRS duration and patient outcomes.

Main Methods:

• A patient with ischemic cardiomyopathy and cRBBB underwent CRT-D implantation.
• Conventional left ventricular lead placement in the lateral/posterior wall was unsuccessful.
• A bailout strategy involving right ventricular lead implantation in the anterior and posterior septal regions was employed.
• Synchronized pacing of the left anterior and posterior bundle (LAB and LPB) was performed.

Main Results:

• Successful implantation using the bailout approach.
• Significant reduction in QRS duration from 160ms to 100ms.
• Improved patient quality of life and stable pacing parameters at one-month follow-up.

Conclusions:

• This case demonstrates a technically feasible bailout approach for CRT-D when standard methods fail.
• Alternative septal pacing via right ventricular leads can be effective for CRT-D in select patients.
• This strategy offers a potential solution for challenging left ventricular lead implantations.