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Fascicular parasystole and recurrent syncope - a case report
Johannes Steinfurt1,2, Stefan Asbach1,2, Katja E Odening1,2
1Department of Cardiology and Angiology I, Heart Center Freiburg University, Hugstetter Str. 55, 79106 Freiburg, Germany.
European Heart Journal. Case Reports
|April 26, 2019
Summary
Ventricular parasystole, an abnormal heart rhythm, can cause syncope (fainting) and increase the risk of dangerous arrhythmias. Catheter ablation successfully treated a teenager with this condition, resolving symptoms and preventing further events.
Area of Science:
- Cardiology
- Electrophysiology
- Cardiac Electrophysiology
Background:
- Parasystole is an ectopic pacemaker competing with the sinus node, found in various heart regions.
- Ventricular parasystole typically has a benign prognosis but can rarely initiate tachyarrhythmias.
- This case explores ventricular parasystole originating from the left posterior fascicle.
Observation:
- A 15-year-old presented with recurrent syncope, diagnosed as ventricular parasystole.
- Structural and primary electrical heart diseases were excluded.
- The patient was identified as high-risk for parasystole-induced tachyarrhythmia.
Findings:
- Catheter ablation of the ectopic focus was performed.
- The patient remains symptom-free post-ablation.
- This intervention effectively managed the ventricular parasystole.
Implications:
- Highlights the risk of ventricular parasystole in recurrent syncope.
- Demonstrates the efficacy of catheter ablation for symptomatic ventricular parasystole.
- Underscores the importance of considering parasystole in unexplained syncope and tachyarrhythmia risk assessment.
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