Left Bundle Branch Pacing of His-Purkinje Conduction System: Initial Experience
Alexander Romeno Janner Dal Forno1, Caique M P Ternes1, João Vítor Ternes Rech1
1Hospital SOS Cardio , Florianópolis , SC - Brasil.
Arquivos Brasileiros De Cardiologia
|March 9, 2022
Summary
Left bundle branch stimulation offers a safe and effective alternative to conventional pacing, reducing risks of heart failure and atrial fibrillation. This His-Purkinje system stimulation method demonstrates high success rates and favorable electronic parameters in patients.
Area of Science:
- Cardiology
- Electrophysiology
- Medical Devices
Background:
- Conventional right ventricular pacing is linked to increased risks of atrial fibrillation and heart failure.
- Left bundle branch (LBB) stimulation of the His-Purkinje system presents a potential method to mitigate these adverse outcomes.
Purpose of the Study:
- To evaluate the intraoperative outcomes, electrocardiographic data, and initial clinical follow-up of patients undergoing LBB stimulation.
- To assess the safety and feasibility of LBB stimulation as a pacing strategy.
Main Methods:
- Retrospective analysis of 52 consecutive patients who underwent LBB stimulation.
- Evaluation of electronic pacing parameters, procedure duration, and early complications.
Main Results:
- A high success rate of 50 out of 52 procedures (96.2%) was achieved.
- Significant reduction in QRS duration from 146 ms to 120 ms, indicating improved ventricular conduction.
- Low stimulation thresholds and adequate R-wave amplitudes were observed, alongside manageable procedure and fluoroscopy times.
Conclusions:
- Left bundle branch stimulation is a safe and feasible technique for cardiac pacing via the His-Purkinje system.
- The procedure demonstrates a high success rate with favorable electronic parameters and efficient procedural metrics.
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