Electrophysiological Characteristics and Radiofrequency Catheter Ablation Treatment of Idiopathic Ventricular Arrhythmias Successfully Ablated From the Ostium of the Coronary Sinus.
Circ J
; 81(12): 1807-1815, 2017 Nov 24.
Article
em En
| MEDLINE
| ID: mdl-28652528
ABSTRACT
BACKGROUND:
Idiopathic ventricular arrhythmias (VAs) rarely arise from the epicardium at the crux of the heart. However, the electrophysiological characteristics of VAs successfully ablated from the ostium of the coronary sinus (CSO) have not yet been documented.MethodsâandâResults:
Electrocardiographic and electrophysiological data were analyzed in patients with idiopathic VAs successfully ablated from the CSO.Among 309 patients with idiopathic VAs treated with radiofrequency catheter ablation (RFCA), 6 (1.94%; 3 men; age 66.3±9.7 years) had VAs successfully ablated from the CSO. Only 1 patient had sustained ventricular tachycardia. The morphology of the QRS showed a left superior axis and QS pattern in leads III and aVF. Furthermore, the precordial maximum deflection index was >0.55 in all patients and a right bundle branch block pattern was recorded in 5 of 6 patients. All VAs were successfully eliminated by RFCA within the CSO. Intracardiac ECGs at sites where VAs were eliminated by RFCA showed clear atrial and ventricular potentials (atrial amplitude 0.21±0.11 mV; ventricular amplitude 0.43±0.24 mV), except in 1 case of atrial fibrillation. No patients had recurrence during the 3.4±1.8-year follow-up period.CONCLUSIONS:
The idiopathic VAs in our study were eliminated by RFCA within the CS, where a clear atrial amplitude was recorded.Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Taquicardia Ventricular
/
Ablação por Cateter
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Seio Coronário
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Fenômenos Eletrofisiológicos
Tipo de estudo:
Observational_studies
/
Prognostic_studies
Limite:
Aged
/
Humans
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Male
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Middle aged
Idioma:
En
Revista:
Circ J
Assunto da revista:
ANGIOLOGIA
/
CARDIOLOGIA
Ano de publicação:
2017
Tipo de documento:
Article