Idiopathic ventricular arrhythmia arising from the mitral annulus

Tada, Hiroshi; Ito, Sachiko; Naito, Shigeto; Kurosaki, Kenji; Kubota, Shoichi; Sugiyasu, Aiko; Tsuchiya, Taketsugu; Miyaji, Kohei; Yamada, Minoru; Kutsumi, Yasunori; Oshima, Shigeru; Nogami, Akihiko; Taniguchi, Koichi

doi:10.1016/j.jacc.2004.12.025

Cited by 188 publications

(40 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The QRS morphology in our patient was similar to those reported by Tada et al3 for posterior-mitral annular VT/PVCs. In their series, among the 19 VT/PVCs originating from the annulus, two originated from the posterior mitral annulus.…”

Section: Discussionsupporting

confidence: 90%

“…Tada et al3 reported that 5% of IVT/PVCs originate from the mitral annulus. They studied the prevalence, ECG characteristics, and preferential site of tachycardia origin within the mitral annulus and the efficacy of RFCA for IVT of this kind.…”

Section: Discussionmentioning

confidence: 99%

“…Eighty percent of IVT originates from the left ventricular outflow tracts and left ventricular fascicles 2. The incidence of VT originating from mitral annulus has been reported as 5% 3. Although tachycardia electrocardiogram (ECG) usually shows wide QRS complex, IVTs encountered in patients without structural heart disease are associated with relatively narrow QRS tachycardia.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Ablation of idiopathic ventricular tachycardia originating from posterior mitral annulus by using electroanatomical mapping

Aksu¹,

Güler²,

Gölcük³

et al. 2015

IMCRJ

View full text Add to dashboard Cite

Idiopathic ventricular tachycardia (IVT) is an important type of arrhythmia, which has distinct electrocardiographic features and treatment options. Most of the cases originate from right ventricular outflow tract and less frequently from the left ventricular outflow tract. IVTs originating from mitral annulus are rare, and little is known about the efficacy of radiofrequency catheter ablation in this form. We hereby present a rare case of IVT arising from posterior mitral annulus. The electrocardiographic, electrophysiological, and electroanatomical characteristics of this tachycardia are discussed.

show abstract

Section: Discussionsupporting

confidence: 90%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Ablation of idiopathic ventricular tachycardia originating from posterior mitral annulus by using electroanatomical mapping

Aksu¹,

Güler²,

Gölcük³

et al. 2015

IMCRJ

View full text Add to dashboard Cite

show abstract

“…6). Als weitere eigene Entität innerhalb der linksventrikulären Tachykardien wurde jüngst ein Tachykardie-Ursprung in enger anatomischer Beziehung zum Mitralklappenring beschrieben [31].…”

Section: Idiopathische Rechts-und Linksventrikuläre Tachykardieunclassified

Ventrikuläre Tachykardien

2006

View full text Add to dashboard Cite

The origin of ventricular tachycardia lies in the ventricular tissue and includes a variety of symptoms such as monomorphic and polymorphic ventricular tachyarrhythmia (VT), ventricular flutter and ventricular fibrillation. Due to transitions of one form of VT to another, any form of VT incurs in principal the risk of cardiac failure. Apart from different electrophysiologic mechanisms such as reentry or triggered activity, any occurrence of VT has to be considered in an individual context: VT can be caused by structural heart disease such as coronary artery disease or dilative cardiomyopathy, or primary electrical disease such as long or short QT syndromes or can even occur without any detectable cause (idiopathic VT). Correct identification of the underlying cause of the arrhythmia is essential for the prognosis, differential therapy and long-term treatment of patients.

show abstract

“…In recent years, radiofrequency catheter ablation (RFCA) has proven to be a safe and successful therapy for the arrhythmias [2-5]. PVCs mainly originate from the right ventricular outflow tract, with a small part of them originating from the left ventricular outflow tract, mitral and tricuspid valve annulus [6-11]. However, idiopathic PVCs that originated from the left ventricular septum, not involving the left anterior or posterior fascicle, have also been observed.…”

Section: Introductionmentioning

confidence: 99%

Premature ventricular contractions originating from the left ventricular septum: Results of Radiofrequency Catheter Ablation in twenty patients

et al. 2011

BMC Cardiovasc Disord

View full text Add to dashboard Cite

BackgroundRFCA has been established as an effective and curative therapy for severely symptomatic PVC from the outflow tract in structurally normal hearts. However, it is unknown whether PVCs originating from the left ventricular septum, are effectively eliminated by RFCA. This study aimed to investigate electrophysiologic characteristics and effects of Radiofrequency catheter ablation (RFCA) for patients with symptomatic premature ventricular contraction (PVC) originating from the left ventricular septum without including fascicular PVCs.MethodsCharacteristics of body surface electrocardiogram (ECG) and electrophysiologic recordings endocardiogram in a successful RFCA target were analyzed in 20 patients with symptomatic PVCs originating from the left ventricular septum. RFCA was performed using pace mapping and activation mapping.ResultsThe QRS morphology of PVCs originating from the left ventricular septum is similar to that seen in fascicular tachycardia. Most of the PVCs originated from the left septum appears in the form of ventricular parasystole. The incidence of ventricular parasystole was 70%. Sustained ventricular tachycardia was not inducible by electrical stimulation and isoproterenol infusion in all 20 patients, ablation at the site recording the earliest Purkinje potential was not effective in all 20 patients, and Purkinje potentials were not identified at successful sites during point mapping. Sixteen patients were successful with RFCA using pace mapping and activation mapping, 3 failed, and 1 recurrent.ConclusionAlthough the ECG characteristics of the PVCs arising from the left ventricular septum are similar to that seen in fascicular tachycardia, the electrophysiologic characteristics are different between the two types of PVCs. The distinguishing characteristic of the PVCs is that Purkinje potentials were not present at the site of successful ablation, suggesting a myocardial as opposed to fascicular substrate. RFCA is an effective curative therapy for symptomatic PVCs originating from the left ventricular septum (not from the left anterior and posterior fascicle).

show abstract

Idiopathic ventricular arrhythmia arising from the mitral annulus

Abstract: Mitral annular VT/PVC is a rare but distinct subgroup of IVT/PVC. MAVT/PVC origin could be determined by ECG analysis. The AL and PS sites of the MA were preferential.

Cited by 188 publications

References 23 publications

Ablation of idiopathic ventricular tachycardia originating from posterior mitral annulus by using electroanatomical mapping

Ablation of idiopathic ventricular tachycardia originating from posterior mitral annulus by using electroanatomical mapping

Ventrikuläre Tachykardien

Premature ventricular contractions originating from the left ventricular septum: Results of Radiofrequency Catheter Ablation in twenty patients

Contact Info

Product

Resources

About