First Case of Left Posterior Fascicle in a Bystander Circuit of Idiopathic Left Ventricular Tachycardia

2014 ◽  
Vol 30 (11) ◽  
pp. 1460.e11-1460.e13 ◽  
Author(s):  
Shingo Maeda ◽  
Yasuhiro Yokoyama ◽  
Akihiko Nogami ◽  
William W. Chik ◽  
Kenzo Hirao
Keyword(s):  
Ventricular Tachycardia ◽  
Left Ventricular ◽  
Idiopathic Left Ventricular Tachycardia ◽  
First Case ◽  
Left Posterior ◽  
Left Posterior Fascicle

scholarly journals Idiopathic Left Ventricular Tachycardia Originating in the Left Posterior Fascicle

2020 ◽  
Vol 8 (4) ◽  
pp. 249-254
Author(s):  
Hongwu Chen ◽  
Kit Chan ◽  
Sunny S Po ◽  
Minglong Chen
Keyword(s):  
Ventricular Tachycardia ◽  
Left Ventricular ◽  
Purkinje Fibres ◽  
Idiopathic Left Ventricular Tachycardia ◽  
Purkinje System ◽  
Left Posterior ◽  
The Difference ◽  
Ventricular Tachycardias ◽  
Left Posterior Fascicle ◽  
Reentrant Circuit

Ventricular tachycardias originating from the Purkinje system are the most common type of idiopathic left ventricular tachycardia. The majority if not all of the reentrant circuit involved in this type of tachycardia is formed by the Purkinje fibres of the left bundle branch, particularly the left posterior fascicle. In general, slowly conducting Purkinje fibres (P1) form the antegrade limb, and normally conducting Purkinje fibres (P2) form the retrograde limb of the reentrant circuit of the ventricular tachycardia originating from the left posterior fascicle. Elimination of the critical Purkinje elements in the reentrant circuit is the route to successful ablation. While the reentrant circuit identified by activation mapping provides the roadmap to ablation targets, comparing the difference in the His-ventricular interval during sinus rhythm and tachycardia also helps to identify the critical site in the reentrant circuit.

scholarly journals New implications for the recurrence mechanism of an upper septal ventricular tachycardia: a case report

2019 ◽  
Vol 3 (2) ◽  
Author(s):  
Junji Yamaguchi ◽  
Yasutoshi Nagata ◽  
Yasuteru Yamauchi ◽  
Kenzo Hirao
Keyword(s):  
Ventricular Tachycardia ◽  
Catheter Ablation ◽  
Left Ventricular ◽  
Common Type ◽  
Idiopathic Left Ventricular Tachycardia ◽  
Case Summary ◽  
Slow Conduction ◽  
Left Posterior ◽  
Proximal Site ◽  
The Us

Abstract Background Verapamil-sensitive fascicular ventricular tachycardia (VT) is the most common type of idiopathic left ventricular tachycardia, and it is divided into three types. Upper septal ventricular tachycardia (US-VT) is likely in patients with prior episodes of left posterior fascicular (LPF)-VT ablation, however, little is known about the recurrence mechanism of US-VT. Case summary A 53-year-old man had an US-VT after two catheter ablation sessions for a common idiopathic LPF-VT. The US-VT was successfully treated by ablating the proximal site of the LPF without making any further branch or fascicular block. This successful ablation point corresponded completely with the earliest pre-systolic potential (P2) site of the LPF-VT during the 1st session of catheter ablation. Discussion An US-VT recurrence could occur if a critical slow conduction is not affected by the catheter ablation. This recurrence might be the result of changing the re-entrant circuit after damage to the LPF. In order to eliminate the LPF-VT and prevent an US-VT recurrence, the earliest P2 site should be investigated carefully and ablated sufficiently.

scholarly journals Is narrow qrs complex tachyarrythmia always from supraventricular?

2019 ◽  
Vol 43 (1) ◽  
pp. 38
Author(s):  
Tiya Setiadi ◽  
Hauda El Rasyid
Keyword(s):  
Ventricular Tachycardia ◽  
Young Patients ◽  
Structural Heart Disease ◽  
Left Ventricular ◽  
Qrs Complex ◽  
Bundle Branch Block ◽  
Idiopathic Left Ventricular Tachycardia ◽  
Narrow Qrs ◽  
First Case ◽  
Narrow Qrs Complex

Idiopathic left ventricular tachycardia (previously known as fascicular VT) is characterized by right bundle branch block (RBBB) left axis ventricular tachycardia (VT) with a relatively narrow QRS (120–140 ms) in young patients and sensitive to verapamil. Objective: To remind that not all tachyarrhythmias with relatively narrow QRS are derived from supraventricular. Cases: First case of 23 years old man with chief complain palpitation and presyncope with narrow QRS ventricular tachycardia electrocardiography (ECG). Second case of 16 years old man with chief complain palpitation with narrow QRS ventricular tachycardia ECG, both of them are getting better after administration of diltiazem and verapamil. Conclusions: Idiopathic left ventricular tachycardia is associated with presyncope, palpitation and was successfully terminated with verapamil. Medical management is variable in its outcomes and given the age of the population affected. Narrow QRS complex tachycardia not always from supraventricular, we should think about ventricular tachycardia especially ILVT if there is no structural heart disease.

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