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Fascicular ventricular tachycardia

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https://www.readbyqxmd.com/read/27810292/special-electrophysiological-characteristics-of-pediatric-idiopathic-ventricular-tachycardia
#1
Shuenn-Nan Chiu, Wei-Lun Wu, Chun-Wei Lu, Kun-Lang Wu, Wei-Chieh Tseng, Ming-Tai Lin, Chien-Chih Chang, Jou-Kou Wang, Mei-Hwan Wu
BACKGROUND: Idiopathic ventricular tachycardia (VT) is an important pediatric arrhythmia but relevant studies in Asian cohort are rare. We determined the electrophysiological characteristics and outcomes of this rhythm disturbance. METHODS: From an institutional database, patients aged <18years without structural heart disease who have sustained monomorphic VT (longer than 30s) during 1995-2016 were enrolled. RESULTS: We enrolled 57 idiopathic VT patients (male:female=31:26)...
October 29, 2016: International Journal of Cardiology
https://www.readbyqxmd.com/read/27763695/use-of-new-imaging-carto%C3%A2-segmentation-module-software-to-facilitate-ablation-of-ventricular-arrhythmias
#2
Oholi Tovia-Brodie, Bernard Belhassen, Aharon Glick, Haim Shmilovich, Galit Aviram, Raphael Rosso, Yoav Michowitz
INTRODUCTION: A new imaging software (CARTO® Segmentation Module, Biosense Webster) allows preprocedural 3-D reconstruction of all heart chambers based on cardiac CT. We describe our initial experience with the new module during ablation of ventricular arrhythmias. METHODS AND RESULTS: Eighteen consecutive patients with idiopathic ventricular arrhythmias or ischemic ventricular tachycardia (VT) were studied. In the latter group, a combined endocardial and epicardial ablation was performed...
October 20, 2016: Journal of Cardiovascular Electrophysiology
https://www.readbyqxmd.com/read/27729344/non-reentrant-fascicular-tachycardia-clinical-and-electrophysiological-characteristics-of-a-distinct-type-of-idiopathic-ventricular-tachycardia
#3
Ahmed Karim Talib, Akihiko Nogami, Itsuro Morishima, Yasushi Oginosawa, Kenji Kurosaki, Shinya Kowase, Yuki Komatsu, Kenji Kuroki, Miyako Igarashi, Yukio Sekiguchi, Kazutaka Aonuma
BACKGROUND: The most common form of idiopathic Purkinje-related ventricular tachycardia (VT) is the reentrant type. We describe the clinical and electrophysiological characteristics of focal non-reentrant fascicular tachycardia. METHODS AND RESULTS: Among 530 idiopathic VT patients who were referred for ablation, we identified 15 (2.8%) with non-reentrant fascicular tachycardia (11 men, 45±21 years). Sinus rhythm ECG showed normal conduction intervals with a His-ventricular interval of 41±4 ms...
October 2016: Circulation. Arrhythmia and Electrophysiology
https://www.readbyqxmd.com/read/27635075/what-is-the-real-identity-of-the-mysterious-potential-p1-and-what-is-the-most-important-segment-of-the-fascicular-ventricular-tachycardia-circuit
#4
EDITORIAL
Akihiko Nogami
No abstract text is available yet for this article.
September 2016: Circulation. Arrhythmia and Electrophysiology
https://www.readbyqxmd.com/read/27635071/macroreentrant-loop-in-ventricular-tachycardia-from-the-left-posterior-fascicle-new-implications-for-mapping-and-ablation
#5
Qiang Liu, Michael Shehata, Ruhong Jiang, Lu Yu, Shiquan Chen, Jun Zhu, Ashkan Ehdaie, Ali A Sovari, Eugenio Cingolani, Sumeet S Chugh, Chenyang Jiang, Xunzhang Wang
BACKGROUND: The underlying mechanisms of reentry during left posterior fascicular ventricular tachycardia (LPF-VT) remain unclear. The purpose of this study is to describe the components of LPF-VT reentry circuit and their electrophysiological properties. METHODS AND RESULTS: Fourteen consecutive patients with LPF-VT underwent electrophysiology study and radiofrequency ablation. Via a multipolar electrode catheter placed from a retrograde aortic approach, a sharp inflection, high-frequency potential (P1) was detected in 9 patients (64%)...
September 2016: Circulation. Arrhythmia and Electrophysiology
https://www.readbyqxmd.com/read/27625168/mechanisms-of-posterior-fascicular-tachycardia-the-relationship-between-high-frequency-potentials-and-the-ventricular-myocardium
#6
Qiang Liu, Michael Shehata, Ruhong Jiang, Lu Yu, Jun Zhu, Ashkan Ehdaie, Eugenio Cingolani, Sumeet S Chugh, Chenyang Jiang, Xunzhang Wang
No abstract text is available yet for this article.
September 2016: Circulation. Arrhythmia and Electrophysiology
https://www.readbyqxmd.com/read/27521090/spectrum-of-fascicular-arrhythmias
#7
REVIEW
Raphael Sung, Melvin Scheinman
Fascicular arrhythmias encompass a wide spectrum of ventricular arrhythmias that depend on the specialized conduction system of the right and left ventricles. These arrhythmias include premature ventricular complexes, monomorphic ventricular tachycardia, polymorphic ventricular tachycardia, and ventricular fibrillation. These arrhythmias may be organized by mechanism, including intrafascicular reentry, interfascicular reentry, and focal. Mapping and ablation of the fascicular system can result in high cure rates of debilitating and potentially life-threatening arrhythmias...
September 2016: Cardiac Electrophysiology Clinics
https://www.readbyqxmd.com/read/27485564/incessant-tachycardia-in-a-patient-with-advanced-heart-failure-and-left-ventricular-assist-device-what-is-the-mechanism
#8
Amit Noheria, Siva K Mulpuru, Peter A Noseworthy, Samuel J Asirvatham
We present a case of incessant wide-complex tachycardia in a patient with left-ventricular assist device, and discuss the differential diagnosis with an in-depth analysis of the intracardiac tracings during the invasive electrophysiologic study, including interpretation of the relative timing of the fascicular signals during tachycardia and in sinus rhythm, and interpretation of pacing and entrainment maneuvers.
January 2016: Indian Pacing and Electrophysiology Journal
https://www.readbyqxmd.com/read/27193769/-fascicular-ventricular-tachycardia-in-a-49-year-old-patient
#9
Barbara Bellmann, Patrick Nagel, Verena Tscholl, Mattias Roser, Andreas Rillig
We report a 49-year-old patient who presented with tachycardia in our emergency room. The 12-lead ECG showed a wide complex tachycardia with a heart rate of 234 beats per minute. After structural heart disease was excluded via echocardiography, coronary angiography and magnetic resonance imaging, an electrophysiological study was performed. During programmed ventricular stimulation, a fascicular tachycardia was induced, which was successfully treated by radiofrequency ablation. Fascicular ventricular tachycardia is a rare tachycardia that occurs in patients without structural heart disease...
June 2016: Herzschrittmachertherapie & Elektrophysiologie
https://www.readbyqxmd.com/read/27119598/arrhythmogenic-right-ventricular-cardiomyopathy-ecg-progression-over-time-and-correlation-with-long-term-follow-up
#10
Cristina Gallo, Alessandro Blandino, Carla Giustetto, Matteo Anselmino, Davide Castagno, Elena Richiardi, Fiorenzo Gaita
AIMS: Arrhythmogenic right ventricular cardiomyopathy (ARVC) is an inherited heart muscle disease primarily affecting the right ventricle and potentially causing sudden death in young people. Our aims are to analyse the progression over time of electrocardiographic (ECG) findings and to investigate their prognostic impact. METHODS: Sixty-eight patients (69% men; age 31 ± 19 years) with ARVC diagnosis were followed up for a mean of 17 ± 8 years. Follow-up included baseline ECG, 24-h Holter ECG, signal-averaged ECG, stress test, echocardiography, cardiac magnetic resonance and electrophysiologic study...
June 2016: Journal of Cardiovascular Medicine
https://www.readbyqxmd.com/read/26920179/anatomical-ablation-strategy-for-noninducible-fascicular-tachycardia
#11
REVIEW
Ahmed Karim Talib, Akihiko Nogami
The presence of structural heart disease does not exclude fascicular ventricular tachycardia (VT), especially if the VT is verapamil sensitive. An empirical anatomic approach is effective when fascicular VT is noninducible or if diastolic Purkinje potential (P1) cannot be recorded during VT mapping. Pace mapping at the successful ablation site is usually not effective because selective pacing of P1 is difficult and there is an antidromic activation of the proximal P1 potential.
March 2016: Cardiac Electrophysiology Clinics
https://www.readbyqxmd.com/read/26899748/the-normal-heart-fascicular-ventricular-tachycardia
#12
Ven Gee Lim, Kay Por Yip, Zhan Yun Lim, Simon Sporton, Simon Kennon
No abstract text is available yet for this article.
June 2016: American Journal of Medicine
https://www.readbyqxmd.com/read/26723904/nonsustained-repetitive-upper-septal-idiopathic-fascicular-left-ventricular-tachycardia
#13
LETTER
Miguel A Arias, Alberto Puchol, Marta Pachón, Finn Akerström, Luis Rodríguez-Padial
No abstract text is available yet for this article.
February 2016: Revista Española de Cardiología
https://www.readbyqxmd.com/read/26654921/a-novel-method-to-identify-the-origin-of-ventricular-tachycardia-from-the-left-fascicular-system
#14
Hongwu Chen, Fengxiang Zhang, Bing Yang, Michael Shehata, Weizhu Ju, Gang Yang, Kai Gu, Mingfang Li, Kejiang Cao, Minglong Chen, Xunzhang Wang
BACKGROUND: There are well-described ablation strategies to treat left fascicular tachyarrhythmia (LFTA); however, a method to predict the origin is less well characterized. OBJECTIVE: The purpose of this study was to predict the origin of LFTAs by measuring the HV interval during normal sinus rhythm (NSR) and LFTAs. METHODS: A predicted value of the earliest presystolic potential (PP) time was calculated using the HV interval during NSR and LFTAs [(HVNSR+HVLFTA)/2]...
March 2016: Heart Rhythm: the Official Journal of the Heart Rhythm Society
https://www.readbyqxmd.com/read/26475648/spontaneous-coronary-dissection-masquerading-as-benign-fascicular-ventricular-tachycardia
#15
Sara Wei-Fen Ho, Weiqin Lin, Koo Hui Chan, Swee-Chong Seow
Spontaneous coronary artery dissection is an uncommon cause of acute coronary syndrome. Diagnosis of coronary artery dissection is made on coronary angiogram and prompt revascularisation is the key in management. We present a case of coronary artery dissection with an atypical presentation of cardiac arrhythmia mimicking benign fascicular ventricular tachycardia. A high index of suspicion and early coronary angiogram allowed us to diagnose and treat this potentially life-threatening disease.
January 2016: Heart, Lung & Circulation
https://www.readbyqxmd.com/read/26413355/a-case-of-clozapine-induced-myocarditis-in-a-young-patient-with-bipolar-disorder
#16
Ronny Cohen, Alla Lysenko, Thierry Mallet, Brooks Mirrer, Michael Gale, Pablo Loarte, Robert McCue
We present a case of drug-induced myocarditis manifesting as acute heart failure in a young patient with bipolar disorder being treated for depression. The case describes a 20-year-old man being treated in the psychiatry ward for worsening depression when he started complaining of chest pain and shortness of breath. His list of medications included clozapine, lithium, lorazepam, and haloperidol. The main findings on physical examination were tachycardia, low-grade fever, crackles in both lung bases on auscultation, and the absence of any notable edema...
2015: Case Reports in Cardiology
https://www.readbyqxmd.com/read/26386017/catheter-ablation-of-fascicular-ventricular-tachycardia-long-term-clinical-outcomes-and-mechanisms-of-recurrence
#17
Yaowu Liu, Zhen Fang, Bing Yang, Pipin Kojodjojo, Hongwu Chen, Weizhu Ju, Kejiang Cao, Minglong Chen, Fengxiang Zhang
BACKGROUND: Fascicular ventricular tachycardia (FVT) is a common form of sustained idiopathic left ventricular tachycardia with an Asian preponderance. This study aimed to prospectively investigate long-term clinical outcomes of patients undergoing ablation of FVT and identify predictors of arrhythmia recurrence. METHODS AND RESULTS: Consecutive patients undergoing FVT ablation at a single tertiary center were enrolled. Activation mapping was performed to identify the earliest presystolic Purkinje potential during FVT that was targeted by radiofrequency ablation...
December 2015: Circulation. Arrhythmia and Electrophysiology
https://www.readbyqxmd.com/read/26381389/insights-into-the-mechanism-of-idiopathic-left-ventricular-tachycardia-a-case-report-and-literature-review
#18
REVIEW
Paul Puie, Gabriel Cismaru, Lucian Muresan, Radu Rosu, Mihai Puiu, Marius Andronache, Gabriel Gusetu, Roxana Matuz, Petru-Adrian Mircea, Dana Pop, Dumitru Zdrenghea
Left ventricular posterior fascicular tachycardia (LVPFT) is an idiopathic form of VT characterized by right bundle branch block morphology and left axis deviation. The mechanism of LPFVT is thought to be localized reentry close to the posterior fascicle. We present the case of a 24-year-old medical student who was admitted to the emergency department complaining of palpitations. The ECG showed an aspect suggestive of LVPFT. Vagal maneuvers, adenosine and i.v. Metoprolol were ineffective in terminating the arrhythmia...
2015: European Journal of Medical Research
https://www.readbyqxmd.com/read/26139310/a-stepwise-approach-to-the-induction-of-idiopathic-fascicular-ventricular-tachycardia
#19
Arun Gopi, Sandeep G Nair, Abhijeet Shelke, Daljeet Kaur Saggu, Sachin Yalagudri, Prabhakar Reddy, Calambur Narasimhan
PURPOSE: Noninducibility of the clinical tachycardia is a major limitation while mapping and ablating idiopathic fascicular ventricular tachycardia (FVT). There is very little data on systematic induction protocols in this entity. Our aim was to study the role of systematic induction protocols in patients with clinically documented ventricular tachycardia (VT). METHODS: Programmed electrical stimulation was performed at baseline from high right atrium, right ventricular apex, right ventricular outflow tract and from left ventricle as per the protocol...
October 2015: Journal of Interventional Cardiac Electrophysiology: An International Journal of Arrhythmias and Pacing
https://www.readbyqxmd.com/read/26073786/estimation-of-purkinje-trees-from-electro-anatomical-mapping-of-the-left-ventricle-using-minimal-cost-geodesics
#20
Rubén Cárdenes, Rafael Sebastian, David Soto-Iglesias, Antonio Berruezo, Oscar Camara
The electrical activation of the heart is a complex physiological process that is essential for the understanding of several cardiac dysfunctions, such as ventricular tachycardia (VT). Nowadays, patient-specific activation times on ventricular chambers can be estimated from electro-anatomical maps, providing crucial information to clinicians for guiding cardiac radio-frequency ablation treatment. However, some relevant electrical pathways such as those of the Purkinje system are very difficult to interpret from these maps due to sparsity of data and the limited spatial resolution of the system...
August 2015: Medical Image Analysis
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