Aortic Sinus of Valsalva Aneurysm Isolation by Radiofrequency Ablation in Outflow Tract Ventricular Tachycardia
| Autor: | Scott W Ferreira, Ali Mehdirad, Peter Mikolajczak, Nicholas Olson |
|---|---|
| Rok vydání: | 2014 |
| Předmět: |
Premature ventricular complexes
medicine.medical_specialty medicine.diagnostic_test business.industry Radiofrequency ablation medicine.medical_treatment medicine.disease Ablation Ventricular tachycardia Arrhythmogenic substrate law.invention medicine.anatomical_structure Aneurysm law Aortic sinus Internal medicine Angiography cardiovascular system medicine Cardiology cardiovascular diseases business |
| Zdroj: | World Journal of Cardiovascular Diseases. :131-137 |
| ISSN: | 2164-5337 2164-5329 |
| DOI: | 10.4236/wjcd.2014.44019 |
| Popis: | Idiopathic monomorphic ventricular tachycardia and premature ventricular complexes (PVCs) commonly arise from the right and left ventricular outflow tracts (VOT). Their mechanism is most commonly triggered activity from delayed after-depolarizations and successful ablation is performed at the site of earliest endocardial activation. Re-entrant mechanisms have been rarely described. We report a case of an otherwise healthy patient who ultimately underwent six electro-physiology studies (EPS) and suffered numerous implantable cardiac defibrillator (ICD) discharges prior to the successful radiofrequency ablation (RFA) of two idiopathic VOT tachycardias. During the sixth EPS, a proximal aortogram demonstrated a left aortic sinus of valsalva (LASV) aneurysm. Subsequntly, a novel and successful RFA strategy of aneurysm isolation was undertaken. The presence of multiple clinical or inducible VT morphologies and the characterization of a VT as re-entrant should raise concerns that a complex arrhythmogenic substrate is present and defining the anatomy with angiography or an alternative imaging modality is essential in achieving a successful ablation strategy. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|