keyword
https://read.qxmd.com/read/38501333/intramural-needle-ablation-or-repeated-standard-ablation-in-patients-referred-for-repeat-ablation-of-scar-related-ventricular-tachycardia
#1
JOURNAL ARTICLE
Masaaki Kurata, Uyanga Batnyam, Usha B Tedrow, Travis D Richardson, Arvindh N Kanagasundram, Kanae Hasegawa, Shunsuke Uetake, Deborah Manuelian, Christine Pellegrini, William G Stevenson
INTRODUCTION: When ventricular tachycardia (VT) recurs after standard RF ablation (sRFA) some patients benefit from repeat sRFA, whereas others warrant advanced methods such as intramural needle ablation (INA). Our objectives are to assess the utility of repeat sRFA and to clarify the benefit of INA when repeat sRFA fails in patients with VT due to structural heart disease. METHODS: In consecutive patients who were prospectively enrolled in a study for INA for recurrent sustained monomorphic VT despite sRFA, repeat sRFA was considered first...
March 19, 2024: Journal of Cardiovascular Electrophysiology
https://read.qxmd.com/read/38397861/phenomena-of-intussusceptive-angiogenesis-and-intussusceptive-lymphangiogenesis-in-blood-and-lymphatic-vessel-tumors
#2
JOURNAL ARTICLE
Lucio Díaz-Flores, Ricardo Gutiérrez, Miriam González-Gómez, Maria Del Pino García, Jose-Luis Carrasco-Juan, Pablo Martín-Vasallo, Juan Francisco Madrid, Lucio Díaz-Flores
Intussusceptive angiogenesis (IA) and intussusceptive lymphangiogenesis (IL) play a key role in the growth and morphogenesis of vessels. However, there are very few studies in this regard in vessel tumors (VTs). Our objective is to assess the presence, characteristics, and possible mechanisms of the formation of intussusceptive structures in a broad spectrum of VTs. For this purpose, examples of benign and malignant blood and lymphatic VTs were studied via conventional procedures, semithin sections, and immunochemistry and immunofluorescence microscopy...
January 23, 2024: Biomedicines
https://read.qxmd.com/read/38060425/tailored-planning-of-surgical-myectomy-in-obstructive-hypertrophic-cardiomyopathy
#3
REVIEW
Hyun Jung Koo, Seung-Ah Lee, Sung Ho Jung, Joon-Won Kang, Dong Hyun Yang
Hypertrophic cardiomyopathy (HCM) is a genetic myocardial disease characterized by abnormal thickening of the myocardium caused by myocardial disarray and interstitial fibrosis. HCM is associated with sudden cardiac-related events, such as ventricular fibrillation, tachycardia, and syncope. Moreover, left ventricular or midcavity obstruction due to the thickened myocardium can result in severe heart failure and mortality in patients with HCM. Surgical myectomy is a standard treatment option for patients with symptomatic obstructive HCM; however, it is a complex procedure that requires careful planning and execution to avoid complications, such as residual flow obstruction, persistent obliteration of the left ventricular cavity in systole, or iatrogenic ventricular septal defects...
January 2024: Radiographics: a Review Publication of the Radiological Society of North America, Inc
https://read.qxmd.com/read/38035256/mitral-annular-disjunction-how-accurate-are-we-a-cardiovascular-mri-study-defining-risk
#4
JOURNAL ARTICLE
Nasir Hussain, Geeta Bhagia, Mark Doyle, Geetha Rayarao, Ronald B Williams, Robert W W Biederman
AIMS: Mitral Annular Disjunction (MAD) refers to embryologic fibrous separation between mitral annular ring and basal left ventricular myocardium. Since its original description, the role of MAD in arrhythmic mitral valve prolapse (MVP) has been the subject of active research. In this study we sought to assess prognostic and imaging characteristics of MVP patients with and without underlying MAD. METHODS AND RESULTS: Patients with posterior or bi-leaflet MVP were retrospectively identified via a review of all patients referred to our cardiac magnetic resonance (CMR) imaging laboratory from January 2015 to May 2022...
December 2023: IJC Heart & Vasculature
https://read.qxmd.com/read/37498247/purkinje-related-ventricular-tachycardia-and-ventricular-fibrillation-solved-and-unsolved-questions
#5
REVIEW
Akihiko Nogami, Yuki Komatsu, Ahmed Karim Talib, Wipat Phanthawimol, Qasim J Naeemah, Tetsuya Haruna, Itsuro Morishima
Of the monomorphic ventricular tachycardias, there are 4 specific tachycardias related to the Purkinje system: 1) idiopathic verapamil-sensitive fascicular ventricular tachycardia (FVT); 2) non-re-entrant FVT; 3) bundle branch re-entry and interfascicular re-entry; and 4) Purkinje-mediated VT in structural heart disease. Verapamil-sensitive FVT is classified into 4 types according to the location of the circuit: 1) left posterior type; 2) left anterior type; 3) left upper septal type;and 4) reverse type...
October 2023: JACC. Clinical Electrophysiology
https://read.qxmd.com/read/37480871/false-tendons-in-the-left-ventricle-implications-for-successful-ablation-of-left-posterior-fascicular%C3%A2-tachycardias
#6
JOURNAL ARTICLE
Qiang Liu, Yunhe Wang, Ashkan Ehdaie, Hui Cheng, Ruhong Jiang, Shiquan Chen, Yaxun Sun, Pei Zhang, Lu Yu, Xia Sheng, Jianwei Lin, Zuwen Zhang, Xu Zhou, Guosheng Fu, Michael Shehata, Chenyang Jiang, Xunzhang Wang
BACKGROUND: The anatomical substrate for left posterior fascicular ventricular tachycardia (LPF-VT) is still unclear. OBJECTIVES: The purpose of this study is to describe the endocavitary substrate of the re-entrant loop of LPF-VT. METHODS: Twenty-six consecutive patients with LPF-VT underwent an electrophysiology study and radiofrequency ablation. RESULTS: Intracardiac echocardiography imaging observed a 100% prevalence of false tendons (FTs) at the left posterior septal region in all patients, and 3 different types of FTs could be classified according to their location...
June 30, 2023: JACC. Clinical Electrophysiology
https://read.qxmd.com/read/37144324/cardiac-echinococcosis-a-multidisciplinary-approach-in-the-diagnosis-and-treatment-of-this-rare-entity-two-case-reports-and-literature-review
#7
JOURNAL ARTICLE
Assen Kelchev, Boyan Kunev, Anelia Partenova, Kamelia Genova, Dimitar Nikolov
We present two case reports of cardiac echinococcosis. Case 1 was a 33-year-old woman with hepatic and cardiac echinococcosis. The parasitic cyst was located intramyocardially in the free wall of the left ventricle leading to cranial dislocation of the left circumflex coronary artery (LCx). The patient was successfully operated. Case 2 was a 28-year-old woman with hepatic and cardiac echinococcosis. The parasitic cyst was located in the left ventricular myocardium in the area of the apex and manifested clinically as paroxysms of ventricular tachycardia...
April 30, 2023: Folia Medica
https://read.qxmd.com/read/37071717/abnormal-mechanics-relate-to-myocardial-fibrosis-and-ventricular-arrhythmias-in-patients-with-mitral-valve-prolapse
#8
JOURNAL ARTICLE
Yasufumi Nagata, Philippe B Bertrand, Vinit Baliyan, Jonathan Kochav, Ruth D Kagan, Kristian Ujka, Hassan Alfraidi, Antonia van Kampen, Jordan E Morningstar, Jacob P Dal-Bianco, Serguei Melnitchouk, Godtfred Holmvang, Michael A Borger, Reece Moore, Lanqi Hua, Razia Sultana, Pablo Villar Calle, Brian Yum, J Luis Guerrero, Tomas G Neilan, Michael H Picard, Jiwon Kim, Francesca N Delling, Judy Hung, Russell A Norris, Jonathan W Weinsaft, Robert A Levine
BACKGROUND: The relation between ventricular arrhythmia and fibrosis in mitral valve prolapse (MVP) is reported, but underlying valve-induced mechanisms remain unknown. We evaluated the association between abnormal MVP-related mechanics and myocardial fibrosis, and their association with arrhythmia. METHODS: We studied 113 patients with MVP with both echocardiogram and gadolinium cardiac magnetic resonance imaging for myocardial fibrosis. Two-dimensional and speckle-tracking echocardiography evaluated mitral regurgitation, superior leaflet and papillary muscle displacement with associated exaggerated basal myocardial systolic curling, and myocardial longitudinal strain...
April 2023: Circulation. Cardiovascular Imaging
https://read.qxmd.com/read/36842790/a-rapid-wide-complex-tachycardia
#9
JOURNAL ARTICLE
Frederick T Han, Melvin Scheinman
No abstract text is available yet for this article.
March 2023: Heart Rhythm: the Official Journal of the Heart Rhythm Society
https://read.qxmd.com/read/36769578/idiopathic-ventricular-tachycardia
#10
REVIEW
Robert C Ward, Martin van Zyl, Christopher V DeSimone
Idiopathic ventricular tachycardia (VT) is an important cause of morbidity and less commonly, mortality in patients with structurally normal hearts. Appropriate diagnosis and management are predicated on an understanding of the mechanism, relevant cardiac anatomy, and associated ECG signatures. Catheter ablation is a viable strategy to adequately treat and potentially provide a cure in patients that are intolerant to medications or when these are ineffective. In this review, we discuss special approaches and considerations for effective and safe ablation of VT arising from the right ventricular outflow tract, left ventricular outflow tract, left ventricular fascicles, papillary muscles, and moderator band...
January 25, 2023: Journal of Clinical Medicine
https://read.qxmd.com/read/36736059/irregular-ventricular-tachycardia-originating-from-the-moderator-band
#11
JOURNAL ARTICLE
Marina L Gonzalez, Chenni S Sriram, Mario D Gonzalez
Ventricular tachycardias (VT) may initially show beat to beat oscillations but rapidly stabilize into a regular tachycardia with a stable cycle length. A persistently irregular ventricular tachycardia is a rare phenomenon. We report a rare case of an "irregular" ventricular tachycardia with so pronounced oscillations in cycle length that it was initially misdiagnosed as atrial fibrillation with aberrant conduction. This ventricular tachycardia was incessant and resulted in a tachycardia induced cardiomyopathy refractory to several antiarrhythmic drugs...
January 30, 2023: Journal of Electrocardiology
https://read.qxmd.com/read/36722012/papillary-muscle-ventricular-ectopy-ablation-in-a-malignant-mitral-valve-prolapse-ablation-in-malignant-mitral-valve-prolapse-ablation-in-malignant-mitral-valve-prolapse
#12
JOURNAL ARTICLE
Sergio Conti, Francesco Sabatino, Carlo Caserta, Giuseppe Sgarito
Patients with mitral valve prolapse (MVP) have a heterogeneous clinical spectrum, ranging from benign to severe clinical presentations such as sudden cardiac death (SCD). Some of the markers of "arrhythmic MVP" include inverted/biphasic T-waves, QT prolongation, and polymorphic premature ventricular contractions (PVCs) originating from the left ventricular outflow tract and papillary muscles (PMs). The genesis of arrhythmias in MVP recognizes the combination of the substrate (fibrosis) and the trigger (mechanical stretch)...
March 2023: Echocardiography
https://read.qxmd.com/read/36692598/dark-papillary-muscles-sign-a-novel-prognostic-marker-for-cardiac-magnetic-resonance
#13
JOURNAL ARTICLE
Giovanni Donato Aquaro, Carmelo De Gori, Giulia Grilli, Roberto Licordari, Andrea Barison, Giancarlo Todiere, Umberto Ianni, Matteo Parollo, Crysanthos Grigoratos, Luca Restivo, Antonio De Luca, Lorenzo Faggioni, Dania Cioni, Gianfranco Sinagra, Gianluca Di Bella, Emanuele Neri
OBJECTIVES: The prognostic role of left ventricular (LV) papillary muscle abnormalities in patients with preserved LV systolic ejection fraction (LVEF) is unknown. We sought to evaluate the prognosis role of LV papillary muscle abnormalities by CMR in patients with ventricular arrhythmias, preserved LVEF with no cardiac disease. METHODS: A total of 391 patients with > 500/24 h premature ventricular complexes and/or with non-sustained ventricular tachycardia (NSVT), preserved LVEF, and no cardiac disease were enrolled...
January 24, 2023: European Radiology
https://read.qxmd.com/read/36651353/catheter-ablation-of-idiopathic-left-fascicular-ventricular-tachycardia-implications-of-false-tendons-for-mapping-and-ablation
#14
JOURNAL ARTICLE
Wei Ma, Jiuchun Qiu, Fengmin Lu, Michael Shehata, Xunzhang Wang, Le He, Fan Zhang, Shaobo Fan, Enyuan Zhang, Dongyan Wu, Zulu Wang, Jing Xu
INTRODUCTION: The anatomical substrate for idiopathic left ventricular tachycardia (ILVT) remains speculative. Purkinje networks surrounding false tendons (FTs) might be involved in the reentrant circuit of ILVT. The objective was to evaluate the anatomical and electrophysiological features of false tendons FTs in relation to ILVT. METHODS: Intracardiac echocardiography (ICE) was conducted on patients with ILVT. The relationship of the FTs with ILVT was determined using electro-anatomical mapping...
January 18, 2023: Journal of Cardiovascular Electrophysiology
https://read.qxmd.com/read/36312773/successful-ventricular-tachycardia-ablation-in-a-patient-with-limited-vascular-and-left-ventricular-endocardial-access-due-to-multiple-mechanical-cardiac-support-devices
#15
Gen Matsuura, Hidehira Fukaya, Yuki Ikeda, Teppei Fujita, Junya Ako
A 48-year-old male with ischemic cardiomyopathy was admitted because of cardiogenic shock due to incessant ventricular tachycardia (VT). Despite the introduction of multiple mechanical cardiac support (MCS) devices, his hemodynamics were unstable; therefore, VT ablation was performed. Due to the limited vascular and left ventricle (LV) access with the multiple MCS devices, only the left femoral artery and vein were accessible. In addition, the transseptal approach as an LV access was difficult because of the MitraClip (Abbott Park, IL, USA)...
November 2022: Journal of Cardiology Cases
https://read.qxmd.com/read/36264437/needle-tipped-catheter-ablation-of-papillary-muscle-results-in-deeper-and-larger-ablation-lesions
#16
JOURNAL ARTICLE
Udi Nussinovitch, Paul Wang, Meghedi Babakhanian, Sanjiv M Narayan, Mohan Viswanathan, Nitish Badhwar, Lijun Zheng, William H Sauer, Duy T Nguyen
Ventricular tachycardia associated with papillary muscle (PM) is often refractory to standard radiofrequency ablation (RFA). The needle-tipped ablation catheter (NT-AC) has been used to treat deep intramyocardial substrates, but its use for PM has not been characterized. Using an ex vivo experimental platform, both 3 mm and 6 mm NT-AC created larger ablation lesion volumes and depths than open-irrigated ablation catheter did (OI-AC; e.g., 57.12 ± 9.70mm3 and 2.42 ± 0.22 mm, respectively; p < 0...
October 20, 2022: Journal of Cardiovascular Translational Research
https://read.qxmd.com/read/36225805/incessant-non-sustained-ventricular-tachycardia-immediately-after-mitraclip-placement-a-case-report
#17
Sayaka Funabashi, Makoto Amaki, Kenichiro Yamagata, Chisato Izumi
Background: MitraClip therapy has become an alternative therapy for primary and secondary mitral regurgitation (MR) in patients at high surgical risk. However, this procedure is associated with several complications. Case summary: The patient was a 93-year-old male with severe MR caused by prolapse of the mid-posterior mitral leaflet (P2) and atrial enlargement. His heart failure (HF) continued to worsen, requiring hospitalization. Considering his high surgical risk, the heart team chose MitraClip treatment...
October 2022: European Heart Journal. Case Reports
https://read.qxmd.com/read/35912329/successful-ablation-of-sustained-monomorphic-ventricular-tachycardia-in-a-patient-with-mitral-annular-disjunction
#18
Swee-Chong Seow, Wee-Tiong Yeo
Mitral annular disjunction (MAD) with or without mitral valve prolapse is associated with sudden death. Observed arrhythmias are usually ventricular ectopic beats originating from the papillary muscles. We describe a successful ablation of sustained monomorphic ventricular tachycardia from an epicardial focus in a patient with MAD. ( Level of Difficulty: Intermediate. ).
July 20, 2022: JACC. Case reports
https://read.qxmd.com/read/35783824/case-report-delayed-ventricular-pseudoaneurysm-after-radiofrequency-ablation-of-left-posteromedial-papillary-muscle-ventricular-tachycardia
#19
Min Kim, Yoon Jung Park, Hee Tae Yu, Tae-Hoon Kim, Jae-Sun Uhm, Boyoung Joung, Hui-Nam Pak, Moon-Hyoung Lee
A 74-year-old woman presented with incessant wide complex tachycardia that was refractory to cardioversions. Successful radiofrequency catheter ablation was performed on the left ventricular posteromedial papillary muscle. An inaudible steam pop has occurred during the procedure, but we confirmed that there were no complications during the procedure and short-term follow-up of echocardiography. Two months after the procedure, an asymptomatic pseudoaneurysm was identified at the ablation site that had not been observed in the short-term follow-up...
2022: Frontiers in Cardiovascular Medicine
https://read.qxmd.com/read/35567782/long-term-study-on-electrophysiological-characteristics-and-catheter-ablation-of-idiopathic-ventricular-arrhythmias-originating-from-the-left-ventricular-posterior-papillary-muscles-guided-by-intracardiac-ultrasound
#20
JOURNAL ARTICLE
Xiangfei Liu, Jin Wang, Yanwei Gong, Changmin Wei
BACKGROUND: This study aimed to investigate the electrophysiological characteristics of idiopathic ventricular arrhythmias (VAs) originating from the left ventricular posterior papillary muscles (LPPM) and explore the efficiency of catheter ablation using three-dimensional intracardiac ultrasound technology. METHODS: Twenty-seven cases of premature ventricular contraction/ventricular tachycardia (PVC/VT) originating from the left ventricular posterior papillary muscles were recorded from July 2015 to June 2019 in the Central Hospital of Shengli Oil Field and the First Affiliated Hospital of Zhengzhou University...
September 2022: Annals of Noninvasive Electrocardiology
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