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Papillary VT

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https://www.readbyqxmd.com/read/28930844/health-related-quality-of-life-assessment-in-surgical-patients-with-papillary-thyroid-carcinoma-a-single-center-analysis-from-mainland-china
#1
Juxiang Gou, Wenjie Cheng, Jianyong Lei, Qian Pan, Wei You, Ming Cai, Huairong Tang, Yali Lei, Zhihui Li, Rixiang Gong, Jinqiang Zhu
Even with a favorable prognosis, the health-related quality of life (HRQoL) of papillary thyroid carcinoma (PTC) patients remains unclear and conflicting. Thus, in the present study, we compared the HRQoL of PTC patients with that of the general population (GP).The study was performed in our thyroid and parathyroid surgery department, and 186 PTC patients who had undergone thyroidectomy were included. The exclusion criteria were an age < 18 years, no follow-up, and the presence of other malignant neoplasms...
September 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28802656/rethinking-papillary-muscle-resection-for-refractory-ventricular-tachycardia-in-the-lvad-era-a-case-report
#2
Zachary J Il'Giovine, Adam D DeVore, Chetan B Patel, Jason Koontz, Jacob Schroder
We report the case of a 57-year-old man with a history of ischemic cardiomyopathy who presented to the hospital with recurrent episodes of ventricular tachycardia refractory to antiarrhythmic medications. Mapping identified a deep premature ventricular contraction focus in the anterolateral papillary muscle, an area that has been previously identified as difficult to treat with radiofrequency catheter ablation. The hospital course was complicated by cardiogenic shock and VT-storm, and the patient ultimately underwent surgical resection of the anterolateral papillary muscle with left ventricular assist device placement as a successful bridge to cardiac transplantation...
July 12, 2017: Journal of Electrocardiology
https://www.readbyqxmd.com/read/28677887/inferior-lead-discordance-in-ventricular-arrhythmias-a-specific-marker-for-certain-arrhythmia-locations
#3
Andres Enriquez, Rajeev K Pathak, Pasquale Santangeli, Jackson Jeikai Liang, Mohammed Al Rawahi, Tatsuya Hayashi, Danielle Muser, David S Frankel, Gregory Supple, Robert Schaller, David Lin, Saman Nazarian, Erica Zado, Francis E Marchlinski, Fermin C Garcia
BACKGROUND: Most idiopathic ventricular arrhythmias (VAs) originate from the outflow tracts and are characterized by an inferior axis on the 12-lead ECG. A group of patients will exhibit inferior lead discordance (ILD), demonstrating a positive QRS in lead II with negative QRS in III or the opposite finding. METHODS AND RESULTS: We identified patients undergoing ablation of idiopathic premature ventricular contractions (PVCs) or ventricular tachycardia (VT) between 2013 and 2015...
July 5, 2017: Journal of Cardiovascular Electrophysiology
https://www.readbyqxmd.com/read/28484842/conventional-mapping-and-ablation-of-focal-ventricular-tachycardias-in-the-healthy-heart
#4
REVIEW
Sonia Busch, Johannes Brachmann, Ahmed Saleh, Mathias Forkmann
Ventricular tachycardias (VT) in the healthy heart, also known as idiopathic VTs, often have a focal origin. Triggered activity due to delayed after-depolarization is the most likely mechanism of focal VTs. Localization of the site of origin of focal VTs is based on activation mapping with or without combination with pace mapping. The characteristic anatomic site of origin of idiopathic VTs is the right and left outflow tract. Other sites include the tricuspid and mitral annulus, the papillary muscles, and Purkinje fibers...
May 8, 2017: Herzschrittmachertherapie & Elektrophysiologie
https://www.readbyqxmd.com/read/28449078/surface-electrocardiography-characteristics-and-radiofrequency-catheter-ablation-of-idiopathic-ventricular-arrhythmias-originating-from-the-left-infero-septal-papillary-muscles-differences-from-those-originating-from-the-left-posterior-fascicle
#5
Shixing Li, Zulu Wang, Zhaoliang Shan, Xiangmin Shi, Ming Liang, Yanchun Liang, Zhiqing Jin, Yaling Han, Yutang Wang
Aims: Distinguishing between ventricular arrhythmias originating from the left ventricular infero-septal papillary muscles (PM) and those from the left posterior fascicle (LPF) by surface electrocardiography (ECG) is very difficult. This study aimed to report the ECG characteristics and radiofrequency catheter ablation of PM and LPF ventricular arrhythmias. Methods and results: A total of 127 patients underwent catheter ablation of idiopathic ventricular arrhythmias originating from the LPF (n = 106; 85 males; 10-70 years) or PM (n = 21; 14 males; 4-68 years) were studied...
April 24, 2017: Europace: European Pacing, Arrhythmias, and Cardiac Electrophysiology
https://www.readbyqxmd.com/read/28292752/fascicular-ventricular-tachycardia-originating-from-papillary-muscles-purkinje-network-involvement-in-the-reentrant-circuit
#6
COMPARATIVE STUDY
Yuki Komatsu, Akihiko Nogami, Kenji Kurosaki, Itsuro Morishima, Keita Masuda, Tomoya Ozawa, Takashi Kaneshiro, Yuichi Hanaki, Yasutoshi Shinoda, Ahmed Karim Talib, Shinya Kowase, Yukio Sekiguchi, Kazutaka Aonuma
BACKGROUND: Verapamil-sensitive fascicular ventricular tachycardia (FVT) has been demonstrated to be a reentrant mechanism using the Purkinje network as a part of its reentrant circuit. Although the papillary muscles (PMs) are implicated in arrhythmogenic structure, reentrant FVT originating from the PMs has not been well defined. METHODS AND RESULTS: We studied 13 patients in whom FVT was successfully eliminated by ablation at the posterior PMs (n=8; PPM-FVT) and anterior PMs (n=5; APM-FVT)...
March 2017: Circulation. Arrhythmia and Electrophysiology
https://www.readbyqxmd.com/read/27890738/ventricular-arrhythmias-associated-with-left-ventricular-noncompaction-electrophysiologic-characteristics-mapping-and-ablation
#7
Daniele Muser, Jackson J Liang, Walter Rt Witschey, Rajeev K Pathak, Simon Castro, Silvia Magnani, Erica S Zado, Fermin C Garcia, Benoit Desjardins, David J Callans, David S Frankel, Francis E Marchlinski, Pasquale Santangeli
BACKGROUND: Left ventricular noncompaction (LVNC) is a primary cardiomyopathy that can present with recurrent ventricular arrhythmias (VAs). Data on the benefit of catheter ablation of VAs in LVNC are lacking. OBJECTIVE: The purpose of this study was to describe the electrophysiologic features and outcomes of catheter ablation of VAs in LVNC. METHODS: The cohort consisted of 9 patients (age 42 ± 15 years) with diagnosis of LVNC based on established criteria and VA (ventricular tachycardia [VT] in 3 and frequent premature ventricular contractions (PVCs) in 6) despite treatment with a mean of 2 ± 1 antiarrhythmic drugs...
February 2017: Heart Rhythm: the Official Journal of the Heart Rhythm Society
https://www.readbyqxmd.com/read/27485578/intracardiac-echo-facilitated-3d-electroanatomical-mapping-of-ventricular-arrhythmias-from-the-papillary-muscles-assessing-the-fourth-dimension-during-ablation
#8
MULTICENTER STUDY
Riccardo Proietti, Santiago Rivera, Charles Dussault, Vidal Essebag, Martin L Bernier, Felix Ayala-Paredes, Mariano Badra-Verdu, Jean-François Roux
AIMS: Ventricular arrhythmias (VA) originating from a papillary muscle (PM) have recently been described as a distinct clinical entity with peculiar features that make its treatment with catheter ablation challenging. Here, we report our experience using an intracardiac echo-facilitated 3D electroanatomical mapping approach in a case series of patients undergoing ablation for PM VA. METHODS AND RESULTS: Sixteen patients who underwent catheter ablation for ventricular tachycardia (VT) or symptomatic premature ventricular contractions originating from left ventricular PMs were included in the study...
January 2017: Europace: European Pacing, Arrhythmias, and Cardiac Electrophysiology
https://www.readbyqxmd.com/read/27422985/partial-ik1-blockade-destabilizes-spiral-wave-rotation-center-without-inducing-wave-breakup-and-facilitates-termination-of-reentrant-arrhythmias-in-ventricles
#9
Yasunori Kushiyama, Haruo Honjo, Ryoko Niwa, Hiroki Takanari, Masatoshi Yamazaki, Yoshio Takemoto, Ichiro Sakuma, Itsuo Kodama, Kaichiro Kamiya
It has been reported that blockade of the inward rectifier K(+) current (IK1) facilitates termination of ventricular fibrillation. We hypothesized that partial IK1 blockade destabilizes spiral wave (SW) re-entry, leading to its termination. Optical action potential (AP) signals were recorded from left ventricles of Langendorff-perfused rabbit hearts with endocardial cryoablation. The dynamics of SW re-entry were analyzed during ventricular tachycardia (VT), induced by cross-field stimulation. Intercellular electrical coupling in the myocardial tissue was evaluated by the space constant...
September 1, 2016: American Journal of Physiology. Heart and Circulatory Physiology
https://www.readbyqxmd.com/read/25936441/geospatial-and-temporal-analysis-of-thyroid-cancer-incidence-in-a-rural-population
#10
John P Hanley, Erin Jackson, Leslie A Morrissey, Donna M Rizzo, Brian L Sprague, Indra Neil Sarkar, Frances E Carr
BACKGROUND: The increasing incidence of thyroid cancer has resulted in the rate tripling over the past 30 years. Reasons for this increase have not been established. Geostatistics and geographic information system (GIS) tools have emerged as powerful geospatial technologies to identify disease clusters, map patterns and trends, and assess the impact of ecological and socioeconomic factors (SES) on the spatial distribution of diseases. In this study, these tools were used to analyze thyroid cancer incidence in a rural population...
July 2015: Thyroid: Official Journal of the American Thyroid Association
https://www.readbyqxmd.com/read/25229319/ventricular-tachycardia-originating-from-the-septal-papillary-muscle-of-the-right-ventricle-electrocardiographic-and-electrophysiological-characteristics
#11
Francesco Santoro, Luigi DI Biase, Patrick Hranitzky, Javier E Sanchez, Pasquale Santangeli, Alessandro Paoletti Perini, John David Burkhardt, Andrea Natale
INTRODUCTION: Premature ventricular complexes (PVCs) and ventricular tachycardia (VT) arising from papillary muscles of both ventricles have recently been described. There is a lack of data on VT originating from the right ventricular papillary (RV PAP) muscles. There have been no prior studies focused on the electrocardiogram (ECG) features and ablation of PVC/VT arising from the septal papillary muscle of the right ventricle. METHODS: Among 155 consecutive patients with normal structural heart who underwent catheter ablation of PVC/VT, 8 patients with PVC/VT from the septal RV PAP muscle were identified...
February 2015: Journal of Cardiovascular Electrophysiology
https://www.readbyqxmd.com/read/24961117/-antiarrhythmic-effect-of-tj0711
#12
Xiao-Jing Zhang, Jun Qiu, Gao Li
To study the antiarrhythmic effect of the newly developed alpha/beta-blocker TJ0711, a variety of animal models of arrhythmia were induced by CaCl2, ouabain and ischemia/reperfusion. Glass microelectrode technique was used to observe action potentials of right ventricular papillary muscle of guinea pig. The onset time of arrhythmia induced by CaCl2 was significantly prolonged by TJ0711 at 0.75, 1.5 and 3 mg x kg(-1) doses. TJ0711 (1.5 and 3 mg x kg(-1)) can significantly shorten the ventricular tachycardia (VT) and ventricular fibrillation (VF) duration, the incidence of VF and mortality were significantly reduced...
March 2014: Yao Xue Xue Bao, Acta Pharmaceutica Sinica
https://www.readbyqxmd.com/read/22922342/discovery-of-n-3-5-bis-1-pyrrolidylmethyl-4-hydroxybenzyl-4-methoxybenzenesulfamide-sulcardine-as-a-novel-anti-arrhythmic-agent
#13
Dong-Lu Bai, Wei-Zhou Chen, Yun-Xin Bo, Yue-Li Dong, Ai-Li Kang, Wei-Kang Sun, Wei Wang, Zhong-Liang Hu, Yi-Ping Wang
AIM: To investigate the anti-arrhythmic effects of sulfamide analogues of changrolin and to characterize the sulfate of compound 6f (sulcardine sulfate, Sul) as a novel anti-arrhythmic agent. METHODS: The anti-arrhythmic effects of compounds were studied against aconitine-induced arrhythmias in rats and ouabain-induced arrhythmias in guinea pigs. The effects of Sul on transmembrane action potentials were investigated in isolated rabbit sinoatrial nodes and guinea-pig papillary muscles using intracellular recording...
September 2012: Acta Pharmacologica Sinica
https://www.readbyqxmd.com/read/22912539/catheter-ablation-of-ventricular-tachycardia-originating-from-the-left-posterior-papillary-muscle-guided-by-the-shadow-of-a-multipolar-catheter
#14
Shiro Nakahara, Noritaka Toratani, Kan Takayanagi
A 62-year-old man without structural heart disease underwent electrophysiological testing for ventricular tachycardia (VT). Hemodynamically unstable VT was induced after isoproterenol (ISP) provocation. Electroanatomical mapping using a multipolar catheter identified the earliest activation originating from the posterior papillary muscle (PPM) where prepotentials preceding the local ventricular electrogram were observed. Irrigated radiofrequency current guided by the shadow of a multipolar catheter eliminated the VT...
July 2012: Indian Pacing and Electrophysiology Journal
https://www.readbyqxmd.com/read/22318814/electroanatomical-characteristics-of-idiopathic-left-ventricular-tachycardia-and-optimal-ablation-target-during-sinus-rhythm-significance-of-preferential-conduction-through-purkinje-fibers
#15
Junbeom Park, Young-Hoon Kim, Chun Hwang, Hui-Nam Pak
PURPOSE: We hypothesized that Purkinje potential and their preferential conduction to the left ventricle (LV) posteroseptum during sinus rhythm (SR) are part of reentrant circuits of idiopathic left ventricular tachycardia (ILVT) and reentry anchors to papillary muscle. MATERIALS AND METHODS: In 14 patients with ILVT (11 men, mean age 31.5±11.1 years), we compared Purkinje potential and preferential conduction during SR with VT by non-contact mapping (NCM). If clear Purkinje potential(SR) was observed in the LV posteroseptum and the earliest activation site (EA) of preferential conduction at SR (EA(SR)) was well matched with that of VT (EA(VT)), EA(SR) was targeted for radiofrequency catheter ablation (RFCA)...
March 2012: Yonsei Medical Journal
https://www.readbyqxmd.com/read/21049461/radioiodine-ablation-of-thyroid-remnants-in-patients-with-differentiated-thyroid-carcinoma-dtc-following-administration-of-rhtsh-a-comparison-with-l-thyroxine-withdrawal
#16
COMPARATIVE STUDY
Agata Bałdys-Waligórska, Filip Gołkowski, Anna Krzentowska-Korek, Alicja Hubalewska-Dydejczyk
INTRODUCTION: A group of differentiated thyroid carcinoma (DTC) patients receiving post thyroidectomy rhTSH-aided radioiodine treatment (group I) was compared with patients treated with ¹³¹I following endogenous stimulation of TSH (group II) after L-thyroxine withdrawal. MATERIAL AND METHODS: Group I consisted of 66 patients of mean age 51.7 ± 16.2 years (58 females and 8 males). Group II included 76 patients of mean age 54.8 ± 14.7 years (67 females and 9 males)...
September 2010: Endokrynologia Polska
https://www.readbyqxmd.com/read/20394294/-effect-of-gbe50-on-experimental-arrhythmias
#17
Xingyu Wang, Zhixiong Zhang, Aihua Liu
OBJECTIVE: The action and mechanism of ginkgo leaf extract (EGB50) in fighting arrhythmia were studies. METHOD: The animal model of arrhythmia was established by intravenous drip of aconitine and ouabain, and the standard microelectrode technique was used. RESULT: In Oua model, threshold doses of ouabain induced VP, VT, VF, CA were observed. GBE50 significantly increased threshold doses of ouabain. In Aco model, threshold doses of Aco induced VP, VT, VF, CA were observed, GBE50 significantly increased threshold doses of Aco...
January 2010: Zhongguo Zhong Yao za Zhi, Zhongguo Zhongyao Zazhi, China Journal of Chinese Materia Medica
https://www.readbyqxmd.com/read/20206325/ventricular-arrhythmias-originating-from-papillary-muscles-in-the-right-ventricle
#18
Thomas Crawford, Giesela Mueller, Eric Good, Krit Jongnarangsin, Aman Chugh, Frank Pelosi, Matthew Ebinger, Hakan Oral, Fred Morady, Frank Bogun
BACKGROUND: Premature ventricular complexes (PVCs) and ventricular tachycardia (VT) with origin in the left ventricular papillary muscle have recently been described. There are no prior studies describing the characteristics of the ventricular arrhythmias (VAs) arising from the right ventricular papillary muscles (RV PAPs). METHODS: Among 169 consecutive patients who underwent a catheter ablation of a VA, eight patients with RV PAPs were identified (seven men, mean PVC burden 17...
June 2010: Heart Rhythm: the Official Journal of the Heart Rhythm Society
https://www.readbyqxmd.com/read/19817930/relevance-of-endocavitary-structures-in-ablation-procedures-for-ventricular-tachycardia
#19
Omar Abouezzeddine, Mahmoud Suleiman, Traci Buescher, Suraj Kapa, Paul A Friedman, Arshad Jahangir, Jennifer A Mears, Dorothy J Ladewig, Thomas M Munger, Stephen C Hammill, Douglas L Packer, Samuel J Asirvatham
BACKGROUND: Radiofrequency (RF) ablation for ventricular tachycardia (VT) has high failure rates. Whether endocavitary structures (ECS) such as the papillary muscles (PMs), moderator bands (MBs), or false tendons (FTs) impact VT ablation is unknown. METHODS AND RESULTS: We retrospectively reviewed records of 190 consecutive patients presenting for VT ablation and identified 46 (24%) where ECS affected ablation. In 31 of 46 patients (67%), the ECS created difficulty with catheter manipulation (n = 20), interpretation of pace map data (n = 7), or with accurately defining a scar (n = 4)...
March 2010: Journal of Cardiovascular Electrophysiology
https://www.readbyqxmd.com/read/19808390/ventricular-tachycardia-originating-from-the-posterior-papillary-muscle-in-the-left-ventricle-a-distinct-clinical-syndrome
#20
Harish Doppalapudi, Takumi Yamada, H Thomas McElderry, Vance J Plumb, Andrew E Epstein, G Neal Kay
BACKGROUND: Several distinct forms of focal ventricular tachycardia (VT) from the left ventricle (LV) have been described. We report a new syndrome of VT arising from the base of the posterior papillary muscle in the LV. METHODS AND RESULTS: Among 290 consecutive patients who underwent ablation for VT or symptomatic premature ventricular complexes (PVCs) based on a focal mechanism, 7 patients were found to have an ablation site at the base of the posterior papillary muscle in the LV...
April 2008: Circulation. Arrhythmia and Electrophysiology
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