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ventricle tachycardia

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https://www.readbyqxmd.com/read/27871248/left-ventricle-remodeling-predicts-the-recurrence-of-ventricular-tachyarrhythmias-in-implantable-cardioverter-defibrillator-recipients-for-secondary-prevention
#1
Wei-Chieh Lee, Huang-Chung Chen, Yung-Lung Chen, Tzu-Hsien Tsai, Kuo-Li Pan, Yu-Sheng Lin, Mien-Cheng Chen
BACKGROUND: Implantable cardioverter defibrillator (ICD) is an effective treatment for secondary prevention of ventricular tachycardia/ventricular fibrillation (VT/VF). Left ventricular (LV) remodeling may develop before ICD implant and over time. However, it remains unclear how LV remodeling affects subsequent risk for recurrence VT/VF in ICD recipients under optimal medical therapy. METHODS: From May of 2004 to June of 2015, 144 patients received ICD implantation for secondary prevention were enrolled in this study...
November 21, 2016: BMC Cardiovascular Disorders
https://www.readbyqxmd.com/read/27871237/a-unique-association-of-arrhythmogenic-right-ventricular-dysplasia-and-acute-myocarditis-as-assessed-by-cardiac-mri-a-case-report
#2
Andrea Ponsiglione, Marta Puglia, Carmine Morisco, Luigi Barbuto, Antonio Rapacciuolo, Mario Santoro, Letizia Spinelli, Bruno Trimarco, Alberto Cuocolo, Massimo Imbriaco
BACKGROUND: Arrhythmogenic right ventricular dysplasia (ARVD), is a genetic disorder of the heart, which mainly involves the right ventricle. It is characterized by hypokinetic areas at the free wall of the right ventricle (RV) or both ventricles, where myocardium is replaced by fibrous or fatty tissue. ARVD is an important cause of ventricular arrhythmias in children and young adults. Although the transmission of the disease is based on hereditary, in young adults it may not show any symptoms...
November 21, 2016: BMC Cardiovascular Disorders
https://www.readbyqxmd.com/read/27862484/%C3%AE-1-adrenoceptor-autoantibodies-increase-the-susceptibility-of-ventricular-arrhythmias-involving-abnormal-repolarization-in-guinea-pigs
#3
Yu-Hui Zhao, Hai-Xia Huang, Ping Liu, Yun-Hui Du, Peng Wang, Wen Wang, Ye Wu, Li Wang, Chang-Sheng Ma, Hui-Rong Liu
High titers of autoantibodies against the second extracellular loop of β1 -adrenergic receptors (β1 -AA) can be detected in the sera from patients with ventricular arrhythmias, but a causal relationship between β1 -AAs and ventricular arrhythmias has not been established. In this work, electrocardiograms of guinea pigs and isolated guinea pig hearts were recorded. Ventricular tachycardia (VT) and ventricular fibrillation (VF) were evoked by programmed electrical stimulation of the left ventricular epicardium of isolated guinea pig hearts...
November 11, 2016: Experimental Physiology
https://www.readbyqxmd.com/read/27807020/miliary-tuberculosis-in-an-immunocompetent-male-with-a-fatal-outcome
#4
Louise Dunphy, Elizabeth Keating, T Parke
A man aged 33 years, born in Nepal, but resident in the UK for 7 years presented to the emergency department with a 4-day history of general malaise, fever (temperature 38.6°C) and a non-productive cough. His medical history was unremarkable and no high-risk behaviour was identified. Clinical examination confirmed decreased air entry bilaterally with bibasal crackles. He was tachycardic, with a heart rate of 120 bpm. Further investigation with a 12-lead ECG confirmed supraventricular tachycardia (SVT) which was terminated with vagal manoeuvres...
November 2, 2016: BMJ Case Reports
https://www.readbyqxmd.com/read/27799231/electrophysiology-study-for-complex-supraventricular-tachycardia-in-congenital-heart-disease-patients-with-single-ventricle-physiology
#5
Shuenn-Nan Chiu, Jou-Kou Wang, Chun-Wei Lu, Kun-Lang Wu, Wei-Chieh Tseng, Mei-Hwan Wu
BACKGROUND: Supraventricular tachycardia (SVT) is common in complex congenital heart disease (CCHD) patients with single-ventricle physiology and may cause hemodynamic deterioration. We reported the outcomes of catheter ablation for such complex SVT in these single-ventricle CCHD patients. METHODS AND RESULTS: Patients with single-ventricle physiology (defined as CCHD patients) who received electrophysiology studies and catheter ablation between 1995 and 2015 were studied...
October 31, 2016: Journal of the American Heart Association
https://www.readbyqxmd.com/read/27771401/combination-of-ecg-and-echocardiography-for-identification-of-arrhythmic-events-in-early-arvc
#6
Ida S Leren, Jørg Saberniak, Trine F Haland, Thor Edvardsen, Kristina H Haugaa
OBJECTIVES: The aim of this study was to investigate early markers of arrhythmic events (AEs) and improve risk stratification in early arrhythmogenic right ventricular cardiomyopathy (ARVC). BACKGROUND: AEs are frequent in patients with ARVC, but risk stratification in subjects with early ARVC is challenging. METHODS: Early ARVC disease was defined as possible or borderline ARVC diagnosis according to the ARVC Task Force Criteria 2010. We performed resting and signal averaged electrocardiogram (ECG)...
October 14, 2016: JACC. Cardiovascular Imaging
https://www.readbyqxmd.com/read/27763695/use-of-new-imaging-carto%C3%A2-segmentation-module-software-to-facilitate-ablation-of-ventricular-arrhythmias
#7
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/27761164/the-genetic-background-of-arrhythmogenic-right-ventricular-cardiomyopathy
#8
Seiko Ohno
Arrhythmogenic right ventricular cardiomyopathy (ARVC) is characterized by degeneration of the right ventricle and ventricular tachycardia originating from the right ventricle. Additionally, the disease is an inherited cardiomyopathy that mainly follows the autosomal dominant pattern. More than 10 genes have been reported as causative genes for ARVC, and more than half of ARVC patients carry mutations in desmosome related genes. The desmosome is one of the structures involved in cell adhesion and its disruption leads to various diseases, including a skin disease called pemphigus...
October 2016: Journal of Arrhythmia
https://www.readbyqxmd.com/read/27753716/reentry-tachycardia-in-children-adenosine-can-make-it-worse
#9
Maximilian D Hien, Fernando Benito Castro, Philippe Fournier, Anne Filleron, Tu-Anh Tran
OBJECTIVES: We report on a rare but severe complication of adenosine use in a child with reentry tachycardia. METHODS AND RESULTS: Treatment with adenosine, which is the standard medical therapy of atrioventricular reentry tachycardia, led to the development of an irregular wide complex tachycardia, caused by rapid ventricular response to atrial fibrillation. The girl was finally stabilized with electrical cardioversion. We analyze the pathomechanism and discuss possible treatment options...
October 8, 2016: Pediatric Emergency Care
https://www.readbyqxmd.com/read/27751261/a-giant-cardiac-hydatid-cyst-presenting-with-chest-pain-and-ventricular-tachycardia-in-a-pregnant-woman-undergoing-cesarean-section
#10
Mehmet Yaman, Ahmet Hakan Ates, Ugur Arslan, Hasan Ozturk, Aytekin Aksakal
Cyst hydatid disease is an infectious disease caused by development of the larval form of Echinococcus granulosus in humans. Cardiac involvement of this disease is a rare condition, and if present, it is most commonly located in the left ventricle. Interventricular septal involvement is observed only in 4% of these cases. Herein, we report a case of cyst hydatid located at interventricular septum causing chest pain and ventricular tachycardia during cesarean section.
September 2016: Indian Heart Journal
https://www.readbyqxmd.com/read/27748433/optogenetics-design-of-mechanistically-based-stimulation-patterns-for-cardiac-defibrillation
#11
Claudia Crocini, Cecilia Ferrantini, Raffaele Coppini, Marina Scardigli, Ping Yan, Leslie M Loew, Godfrey Smith, Elisabetta Cerbai, Corrado Poggesi, Francesco S Pavone, Leonardo Sacconi
Current rescue therapies for life-threatening arrhythmias ignore the pathological electro-anatomical substrate and base their efficacy on a generalized electrical discharge. Here, we developed an all-optical platform to examine less invasive defibrillation strategies. An ultrafast wide-field macroscope was developed to optically map action potential propagation with a red-shifted voltage sensitive dye in whole mouse hearts. The macroscope was implemented with a random-access scanning head capable of drawing arbitrarily-chosen stimulation patterns with sub-millisecond temporal resolution allowing precise epicardial activation of Channelrhodopsin2 (ChR2)...
October 17, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27746571/anesthetic-management-of-a-child-with-complete-atrioventricular-septal-defect-and-single-ventricle-posted-for-noncardiac-surgery
#12
Aabid Hussain Mir, Zulfiqar Ali, Bashir Ahmad Dar, Imtiaz A Naqash, Samreena Bashir
Congenital heart defects are associated with various physiological disturbances. They pose anesthetic challenges for both cardiac and noncardiac surgeries. Atrioventricular septal defects are due to a developmental failure in the separation of atria and the ventricles into separate chambers and failure in the separation of mitral and tricuspid valves. We present a case of a child (1½ years), weighing 10 kg, diagnosed as congenital hydrocephalus who was planned for ventriculoperitoneal shunt. Child was having an oxygen saturation of 76% on room air...
September 2016: Anesthesia, Essays and Researches
https://www.readbyqxmd.com/read/27738505/depression-masquerading-as-chest-pain-in-a-patient-with-wolff-parkinson-white-syndrome
#13
Rajashree Madabushi, Anil Agarwal, Saipriya Tewari, Sujeet K S Gautam, Sandeep Khuba
Wolff Parkinson White (WPW) syndrome is a condition in which there is an aberrant conduction pathway between the atria and ventricles, resulting in tachycardia. A 42-year-old patient, who was treated for WPW syndrome previously, presented with chronic somatic pain. With her cardiac condition in mind, she was thoroughly worked up for a recurrence of disease. As part of routine screening of all patients at our pain clinic, she was found to have severe depression as per the Patient Health Questionnaire-9 (PHQ-9) criteria...
October 2016: Korean Journal of Pain
https://www.readbyqxmd.com/read/27738073/safety-long-term-outcomes-and-predictors-of-recurrence-after-first-line-combined-endoepicardial-ventricular-tachycardia-substrate-ablation-in-arrhythmogenic-cardiomyopathy-impact-of-arrhythmic-substrate-distribution-pattern-a-prospective-multicentre-study
#14
Antonio Berruezo, Juan Acosta, Juan Fernández-Armenta, Alonso Pedrote, Alberto Barrera, Eduardo Arana-Rueda, Andrés Ignacio Bodegas, Ignasi Anguera, Luis Tercedor, Diego Penela, David Andreu, Rosario Jesus Perea, Susana Prat-González, Lluis Mont
BACKGROUND: First-line endoepicardial ventricular tachycardia (VT) ablation has been proposed for patients with arrhythmogenic cardiomyopathy (AC). This study reports procedural safety, outcomes, and predictors of recurrence. METHODS AND RESULTS: Forty-one consecutive patients [12 with left ventricle (LV) involvement, 7 left-dominant] underwent first-line endoepicardial VT substrate ablation. Standard bipolar and unipolar thresholds were used to define low-voltage areas (LVA)...
October 12, 2016: Europace: European Pacing, Arrhythmias, and Cardiac Electrophysiology
https://www.readbyqxmd.com/read/27733459/catheter-ablation-for-ventricular-tachycardia-following-surgical-treatment-of-pulmonary-stenosis-with-intact-ventricular-septum
#15
Bingbo Hou, Lihui Zheng, Guodong Niu, Lingmin Wu, Yu Qiao, Wei Sun, Ligang Ding, Gang Chen, Shu Zhang, Reginald Liew, Yan Yao
AIMS: This study was aimed to report the characteristics and treatment of ventricular tachycardia (VT) following surgical treatment of pulmonary stenosis with intact ventricular septum. METHODS AND RESULTS: Five patients underwent radiofrequency catheter ablation for sustained monomorphic left bundle branch block (LBBB) type VT who previously underwent surgical treatment of pulmonary stenosis. Except stimulation, voltage and activation mapping was performed using three-dimensional (3D) electro-anatomic mapping and ablation was applied accordingly...
October 12, 2016: Europace: European Pacing, Arrhythmias, and Cardiac Electrophysiology
https://www.readbyqxmd.com/read/27729359/prognostic-benefit-of-cardiac-magnetic-resonance-over-transthoracic-echocardiography-for-the-assessment-of-ischemic-and-nonischemic-dilated-cardiomyopathy-patients-referred-for-the-evaluation-of-primary-prevention-implantable-cardioverter-defibrillator-therapy
#16
Gianluca Pontone, Andrea I Guaricci, Daniele Andreini, Anna Solbiati, Marco Guglielmo, Saima Mushtaq, Andrea Baggiano, Virginia Beltrama, Laura Fusini, Cristina Rota, Chiara Segurini, Edoardo Conte, Paola Gripari, Antonio Dello Russo, Massimo Moltrasio, Fabrizio Tundo, Federico Lombardi, Giuseppe Muscogiuri, Valentina Lorenzoni, Claudio Tondo, Piergiuseppe Agostoni, Antonio L Bartorelli, Mauro Pepi
BACKGROUND: The aim of this study was to determine the prognostic benefit of cardiac magnetic resonance (CMR) over transthoracic echocardiography (TTE) in ischemic cardiomyopathy and nonischemic dilated cardiomyopathy patients evaluated for primary prevention implantable cardioverter-defibrillator therapy. METHODS AND RESULTS: We enrolled 409 consecutive ischemic and dilated cardiomyopathy patients (mean age: 64±12 years; 331 men). All patients underwent TTE and CMR, and left ventricle end-diastolic volume, left ventricle end-systolic volume, and left ventricle ejection fraction (LVEF) were evaluated...
October 2016: Circulation. Cardiovascular Imaging
https://www.readbyqxmd.com/read/27715074/-arrhythmogenic-left-ventricular-cardiomyopathy
#17
Štěpán Havránek, Tomáš Paleček, Petr Kuchynka, Ivana Vítková
Arrhythmogenic left ventricular cardiomyopathy (ALVC) is a rare condition characterised by progressive fibrofatty replacement of the myocardium of the left ventricle in combination with arrhythmias of left ventricular origin. ALVC has been linked to autosomal dominant mutations of genes encoding desmosomal proteins, similarly to the classic arrhythmogenic right ventricular cardiomyopathy with which it also shares pathological and prognostic features. It seems that isolated left or right ventricular abnormalities represent two extremes of the spectrum of clinical manifestations of a single disease: arrhythmogenic cardiomyopathy...
2016: Vnitr̆ní Lékar̆ství
https://www.readbyqxmd.com/read/27710875/biventricular-transient-systolic-dysfunction-after-mitral-valve-replacement-pericardial-decompression-syndrome
#18
Sebnem Albeyoglu, Mustafa Aldag, Ufuk Ciloglu, Hakan Kutlu, Sabri Dagsali
BACKGROUND: Pericardial decompression syndrome is defined as paradoxical hemodynamic instability, left ventricular or bi ventricular systolic dysfunction and pulmonary edema after pericardial fluid drainage. Pericardial Decompression Syndrome is an unexpected clinical scenario with an incidence less than 5% in all surgically or percutaneously managed pericardial tamponade patients. The aim of this manuscript was to describe a case with cardiac tamponade in whom acute biventricular heart failure and pulmonary edema developed after surgical creation of a pericardial window, and to discuss this case in light of the literature...
September 30, 2016: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/27689971/glycyrrhizic-acid-reduces-heart-rate-and-blood-pressure-by-a-dual-mechanism
#19
Kailash Singh, Aung Moe Zaw, Revathi Sekar, Ahuja Palak, Ahmed A Allam, Jamaan Ajarem, Billy K C Chow
Beta adrenergic receptors are crucial for their role in rhythmic contraction of heart along with their role in the pathological conditions such as tachycardia and high risk of heart failure. Studies report that the levels of beta-1 adrenergic receptor tend to decrease by 50%, whereas, the levels of beta-2 adrenergic receptor remains constant during the risk of heart failure. Beta blockers-the antagonistic molecules for beta-adrenergic receptors, function by slowing the heart rate, which thereby allows the left ventricle to fill completely during tachycardia incidents and hence helps in blood pumping capacity of heart and reducing the risk of heart failure...
2016: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/27662633/radionuclide-assessment-of-cardiac-function-and-dyssynchrony-in-children-with-idiopathic-ventricular-tachycardia
#20
Konstantin V Zavadovsky, Victor V Saushkin, Mikhail S Khlynin, Sergey V Popov, Yuri B Lishmanov
BACKGROUND: The aim of the study was to evaluate the impact of idiopathic ventricular tachycardia and premature ventricular beats on cardiac function and dyssynchrony and to elucidate relationships between data of scintigraphic and intracardiac electrophysiology studies (EPSs). METHODS: The study comprised 64 patients with idiopathic ventricular arrhythmias (VAs; median age of 14 years ranging from 8 to 18 years). The control group comprised 20 patients (median age of 12 ranging from 7 to 16 years) without cardiac arrhythmias...
November 2016: Pacing and Clinical Electrophysiology: PACE
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