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Atrial and His bundle stimulation with an accessory nodo-ventricular connection
Pacing and Clinical Electrophysiology : PACE
|May 1, 1980
Summary
This study details a rare right-sided accessory nodo-ventricular connection causing paroxysmal tachycardia. It highlights novel diagnostic and therapeutic pacing techniques for this condition.
Area of Science:
- Cardiology
- Electrophysiology
- Cardiac Arrhythmias
Background:
- Persistent left bundle branch block (LBBB) can complicate tachycardia diagnosis.
- Accessory pathways are common causes of supraventricular tachycardias.
Observation:
- A 39-year-old male with a 27-year history of paroxysmal tachycardias presented with LBBB.
- Electrophysiology study revealed a right-sided accessory nodo-ventricular pathway.
Findings:
- QRS normalization during left atrial pacing aided diagnosis.
- Rapid His bundle pacing successfully terminated the tachycardia.
Implications:
- This case underscores the utility of specific pacing maneuvers in diagnosing complex accessory pathway-mediated tachycardias.
- Rapid His bundle pacing offers a potential therapeutic strategy for refractory arrhythmias.