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Related Experiment Videos

Adenosine sensitive left ventricular tachycardia

E Diker1, K Tezcan, M Ozdemir

  • 1Türkiye Yüksek Ihtisas Hastanesi, Ankara, Turkey.

Pacing and Clinical Electrophysiology : PACE
|February 25, 1998
PubMed
Summary

This study details a case of ventricular tachycardia originating in the left ventricle, successfully treated with radiofrequency ablation. Adenosine responsiveness and P potentials guided the successful ablation targeting the anterior fascicle.

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Area of Science:

  • Cardiology
  • Electrophysiology
  • Cardiac Pacing

Background:

  • Ventricular tachycardia (VT) in patients without structural heart disease presents diagnostic and therapeutic challenges.
  • Identifying the precise origin of VT is crucial for effective ablation strategies.

Observation:

  • A 39-year-old male presented with recurrent ventricular tachycardia characterized by right bundle branch block morphology and right axis deviation.
  • The tachycardia was inducible by ventricular pacing and originated from the mid-anterior free wall of the left ventricle.
  • The arrhythmia showed responsiveness to adenosine administration.

Findings:

  • Radiofrequency current application at a site with presumed P potentials successfully eliminated the ventricular tachycardia.
  • Electrophysiological mapping indicated the VT origin was closely related to the anterior fascicle.

Related Experiment Videos

  • Adenosine effectively terminated the tachycardia, supporting its reentrant mechanism.

    • Implications:

    • This case highlights the potential for fascicular VT in patients without structural heart disease.
    • Accurate electrophysiological mapping and targeted ablation are effective for managing such arrhythmias.
    • Understanding the role of fascicular pathways in VT can refine ablation techniques.