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https://www.readbyqxmd.com/read/28523857/arrhythmia-burden-and-related-outcomes-in-eisenmenger-syndrome
#1
Shankar Baskar, Philippa Horne, Samantha Fitzsimmons, Philip R Khoury, Joseph Vettukattill, Koichiro Niwa, Teiji Agaki, Mark Spence, Hisanori Sakazaki, Gruschen Veldtman
BACKGROUND: Patients with Eisenmenger syndrome have a shorter lifespan than the general population. A significant proportion develop arrhythmia and some, sudden death. OBJECTIVE: The aims of this study were to characterize the frequency, type and effects of arrhythmias in adult patients with Eisenmenger's syndrome and to identify risk factors for arrhythmias. METHODS: This retrospective study included patients aged ≥ 18 years of age with Eisenmenger's syndrome from three institutions...
May 19, 2017: Congenital Heart Disease
https://www.readbyqxmd.com/read/28512102/uncommon-presentation-of-adult-form-scimitar-syndrome-associated-with-single-left-pulmonary-vein-in-a-pregnant-woman
#2
Sarah Ali Althomali, Ashraf Ahmad Alhefny, Mohammad Salih Almalki
Scimitar syndrome is the constellation of malformations including an abnormal venous drainage of the right lung into the inferior vena cava, associated with the right lung and systemic supply to the right lung. The anomalous vein looks like the curved, Turkish sword (scimitar), hence the name.The adult form of scimitar syndrome is rare, and it is usually an incidental diagnosis based on the characteristic finding on radiological imaging since the patients are usually asymptomatic or with minimal symptoms.Our patient presented with a rare presentation of scimitar syndrome, which is tachyarrhythmia (sinus tachycardia, with episodes of supraventricular tachycardia)...
May 15, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28509894/swallowing-induced-supraventricular-tachyarrhythmia
#3
Umair Khalid, Ali Massumi, Aziz Shaibani
Swallowing-induced supraventricular tachyarrhythmia is an extremely rare entity with unclear pathophysiology. A 55-year-old man presented with a 2-year history of worsening presyncopal symptoms triggered only by drinking liquids of any temperature. Results of a physical examination were unremarkable except for reproducible atrial tachycardias to 180 to 210 beats/minute documented on rhythm strips when the patient was given water to drink. He underwent radiofrequency ablation with complete resolution of symptoms...
2017: Reviews in Cardiovascular Medicine
https://www.readbyqxmd.com/read/28497858/beat-to-beat-ecg-restitution-a-review-and-proposal-for-a-new-biomarker-to-assess-cardiac-stress-and-ventricular-tachyarrhythmia-vulnerability
#4
REVIEW
Anthony A Fossa
BACKGROUND: Cardiac restitution is the ability of the heart to recover from one beat to the next. Ventricular arrhythmia vulnerability can occur when the heart does not properly adjust to sudden changes in rate or in hemodynamics leading to excessive temporal and/or spatial heterogeneity in conduction or repolarization. Restitution has historically been used to study, by invasive means, the dynamics of the relationship between action potential duration (APD) and diastolic interval (DI) in sedated subjects using various pacing protocols...
May 12, 2017: Annals of Noninvasive Electrocardiology
https://www.readbyqxmd.com/read/28495652/acute-efficacy-safety-and-long-term-clinical-outcomes-utilizing-the-second-generation-cryoballoon-for-pulmonary-vein-isolation-in-patients-with-a-left-common-pulmonary-vein-a-multicenter-study
#5
Christian-Hendrik Heeger, Verena Tscholl, Erik Wissner, Thomas Fink, Laura Rottner, Peter Wohlmuth, Barbara Bellmann, Mattias Roser, Shibu Mathew, Christian Sohns, Bruno Reißmann, Christine Lemeš, Tilman Maurer, Francesco Santoro, Johannes Riedl, Britta Goldmann, Ulf Landmesser, Feifan Ouyang, Karl-Heinz Kuck, Andreas Rillig, Andreas Metzner
BACKGROUND: Second-generation cryoballoon (CB2)-based pulmonary vein isolation (PVI) has demonstrated encouraging clinical results in the treatment of paroxysmal (PAF) and persistent atrial fibrillation (PersAF). However, the CB2 features a maximal diameter of 28mm and its adaptability to anatomical variations of the pulmonary veins (PVs) might be challenging. OBJECTIVE: To assess acute efficacy, safety and long-term clinical results of CB2-based PVI in patients with a left common PV (LCPV)...
May 8, 2017: Heart Rhythm: the Official Journal of the Heart Rhythm Society
https://www.readbyqxmd.com/read/28491809/early-stage-left-atrial-intramural-hemorrhage-mimicking-partial-coronary-sinus-thrombosis-in-a-patient-who-received-ablation-for-atrial-tachyarrhythmias
#6
Po-Cheng Chang, Yuan-Chang Liu, Ming-Shien Wen, Chung-Chuan Chou
No abstract text is available yet for this article.
April 2017: HeartRhythm Case Reports
https://www.readbyqxmd.com/read/28488108/-ventricular-tachyarrhythmia-as-a-side-effect-of-pharmacotherapy
#7
REVIEW
Thomas Demming, Hendrik Bonnemeier
Ventricular tachyarrhythmia is a severe and life-threatening potential side effect of pharmacotherapy. Substances with proarrhythmic potential belong to various groups of medication. Apart from antiarrhythmic agents, especially antibiotics and psychiatric drugs are worth mentioning owing to their broad application. Interaction with cardiac potassium channels is the most important reason for drug-induced ventricular tachyarrhythmia. Over 20 years of research in animal models and clinical studies have uncovered the underlying mechanisms...
May 9, 2017: Herzschrittmachertherapie & Elektrophysiologie
https://www.readbyqxmd.com/read/28484965/the-protective-role-of-small-heat-shock-proteins-in-cardiac-diseases-key-role-in-atrial-fibrillation
#8
Xu Hu, Denise M S Van Marion, Marit Wiersma, Deli Zhang, Bianca J J M Brundel
Atrial fibrillation (AF) is the most common tachyarrhythmia which is associated with increased morbidity and mortality. AF usually progresses from a self-terminating paroxysmal to persistent disease. It has been recognized that AF progression is driven by structural remodeling of cardiomyocytes, which results in electrical and contractile dysfunction of the atria. We recently showed that structural remodeling is rooted in derailment of proteostasis, i.e., homeostasis of protein production, function, and degradation...
May 8, 2017: Cell Stress & Chaperones
https://www.readbyqxmd.com/read/28484840/epidemiology-of-ventricular-tachyarrhythmia-any-changes-in-the-past-decades
#9
REVIEW
Benjamin Jong-Ming Pang, Martin Stephen Green
Ventricular tachyarrhythmias include potentially lethal episodes of sustained ventricular tachycardia (VT) and ventricular fibrillation (VF) as well as hemodynamically tolerated ventricular ectopic activity. Sustained VT or VF may develop in the setting of acute myocardial infarction or as clinical sequelae of advanced cardiomyopathy. The incidence of these serious arrhythmias is estimated from retrospective and observational studies and registries of sudden cardiac arrest and sudden cardiac death. Over the past few decades, there has been a gradual decline in the incidence of life-threatening ventricular tachyarrhythmias which has been largely driven by upstream treatments for and prevention of coronary artery disease and its sequelae...
May 8, 2017: Herzschrittmachertherapie & Elektrophysiologie
https://www.readbyqxmd.com/read/28470179/autoimmune-channelopathies-as-a-novel-mechanism-in-cardiac-arrhythmias
#10
REVIEW
Pietro Enea Lazzerini, Pier Leopoldo Capecchi, Franco Laghi-Pasini, Mohamed Boutjdir
Cardiac arrhythmias confer a considerable burden of morbidity and mortality in industrialized countries. Although coronary artery disease and heart failure are the prevalent causes of cardiac arrest, in 5-15% of patients, structural abnormalities at autopsy are absent. In a proportion of these patients, mutations in genes encoding cardiac ion channels are documented (inherited channelopathies), but, to date, the molecular autopsy is negative in nearly 70% of patients. Emerging evidence indicates that autoimmunity is involved in the pathogenesis of cardiac arrhythmias...
May 4, 2017: Nature Reviews. Cardiology
https://www.readbyqxmd.com/read/28460772/profiling-cardiac-arrhythmia-and-heart-failure-patients-in-india-the-pan-arrhythmia-and-heart-failure-observational-study
#11
Amit Vora, Ajay Naik, Yash Lokhandwala, Arun Chopra, Jagmohan Varma, G S Wander, Aparna Jaswal, V Srikanthan, Balbir Singh, Dhiman Kahali, Anoop Gupta, R R Mantri, Anil Mishra, Ulhas Pandurangi, Debashis Ghosh, Jitendra Singh Makkar, Sujaayaa Sahu, Rajesh Radhakrishnan
BACKGROUND: The PANARrhythMia and Heart Failure Registry (PANARM HF) characterized demographic, clinical and interventional therapy indication profiles of cardiac arrhythmia (CA) and heart failure (HF) patients in India. METHODS: Consulting Physicians (CP) who medically manage CA and HF patients enrolled patients with one or more of the following: syncope, pre-syncope, dyspnea, palpitation, fatigue and LV dysfunction. The CPs were trained by interventional cardiologists (IC) to identify CA/HF patients indicated for implantable device/radiofrequency ablation (RFA)...
March 2017: Indian Heart Journal
https://www.readbyqxmd.com/read/28457241/development-of-tachyarrhythmias-late-after-the-fontan-procedure-the-role-of-ablative-therapy
#12
REVIEW
Natasja M S de Groot, Ad J J C Bogers
Patients with a Fontan circulation are at a high risk of developing a variety of cardiac dysrhythmias after cardiac surgery. These dysrhythmias are most often supraventricular tachyarrhythmias (SVT), but ventricular tachyarrhythmias (VT) may also occur. Mechanisms underlying SVT are variable, including both ectopic activity and reentry. Over time, successive SVT may be caused by different mechanisms. The acute success rate of ablative therapy of atrial tachyarrhythmias is considerably high yet during long-term follow-up 'recurrences' frequently occur...
June 2017: Cardiac Electrophysiology Clinics
https://www.readbyqxmd.com/read/28456577/evaluation-of-processed-borax-as-antidote-for-aconite-poisoning
#13
Prasanta Kumar Sarkar, Pradeep K Prajapati, Vinay J Shukla, Basavaiah Ravishankar
ETHNOPHARMACOLOGICAL RELEVANCE: Aconite root is very poisonous; causes cardiac arrhythmias, ventricular fibrillation and ventricular tachycardia. There is no specific antidote for aconite poisoning. In Ayurveda, dehydrated borax is mentioned for management of aconite poisoning. AIM OF THE STUDY: The investigation evaluated antidotal effect of processed borax against acute and sub-acute toxicity, cardiac toxicity and neuro-muscular toxicity caused by raw aconite...
April 26, 2017: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/28456483/characteristics-and-long-term-catheter-ablation-outcome-in-long-standing-persistent-atrial-fibrillation-patients-with-non-pulmonary-vein-triggers
#14
Yuan Hung, Li-Wei Lo, Yenn-Jiang Lin, Shih-Lin Chang, Yu-Feng Hu, Fa-Po Chung, Ta-Chuan Tuan, Tze-Fan Chao, Jo-Nan Liao, Rohit Walia, Abigail Louise D Te, Shinya Yamada, Chung-Hsing Lin, Yao-Ting Chang, Chin-Yu Lin, Chao-Shun Chan, Ying-Chieh Liao, Sunu Raharjo, Suresh Allamsetty, Shih-Ann Chen
BACKGROUND: There are limited literatures regarding the non-pulmonary vein (NPV) triggers in long-standing persistent atrial fibrillation (LSPAF). The goal of the present study was to investigate the characteristics and long-term outcome of catheter ablation among these patients. METHODS: The study included 776 patients (age 53.59±11.38years-old, 556 males) who received catheter ablation for drug-refractory atrial fibrillation (AF). We divided these patients into 3 groups...
April 21, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/28454826/outcomes-in-adult-fontan-patients-with-atrial-tachyarrhythmias
#15
Alexander C Egbe, Heidi M Connolly, Arooj R Khan, Talha Niaz, Sameh S Said, Joseph A Dearani, Carole A Warnes, Abhishek J Deshmukh, Suraj Kapa, Christopher J McLeod
BACKGROUND: The optimal management strategy for atrial tachyarrhythmia in the Fontan population is unknown. METHODS: Retrospective review of 264 adult Fontan patients with atrial tachyarrhythmia evaluating 3 clinically adopted scenarios: antiarrhythmic drug (AAD) therapy, catheter ablation (CA), and Fontan conversion (FC). These patients were followed up at Mayo Clinic from 1994 to 2014. The study objective was to compare freedom from atrial tachyarrhythmia recurrence (AR) and occurrence of composite adverse events (stroke, heart failure hospitalization, death, or heart transplant) between treatment groups...
April 2017: American Heart Journal
https://www.readbyqxmd.com/read/28454824/the-impact-of-body-mass-index-on-the-wearable-cardioverter-defibrillator-shock-efficacy-and-patient-wear-time
#16
Chingping Wan, Steven J Szymkiewicz, Helmut U Klein
BACKGROUND: The impact of body mass index (BMI) on the shock efficacy and patient adherence among patients using a wearable cardioverter defibrillator (WCD) is unknown. METHODS: Patients prescribed the WCD between January 1, 2008 and June 1, 2013, who experienced at least one episode of sustained ventricular tachycardia (VT) or ventricular fibrillation (VF) and who received appropriate WCD therapy, were identified within a registry maintained by the manufacturer for regulatory, reimbursement, and administrative purposes...
April 2017: American Heart Journal
https://www.readbyqxmd.com/read/28446231/remote-ischemic-preconditioning-differentially-attenuates-post-ischemic-cardiac-arrhythmia-in-streptozotocin-induced-diabetic-versus-nondiabetic-rats
#17
Zhaoyang Hu, Mou Chen, Ping Zhang, Jin Liu, Geoffrey W Abbott
BACKGROUND: Sudden cardiac death (SCD), a leading cause of global mortality, most commonly arises from a substrate of cardiac ischemia, but requires an additional trigger. Diabetes mellitus (DM) predisposes to SCD even after adjusting for other DM-linked cardiovascular pathology such as coronary artery disease. We previously showed that remote liver ischemia preconditioning (RLIPC) is highly protective against cardiac ischemia reperfusion injury (IRI) linked ventricular arrhythmias and myocardial infarction, via induction of the cardioprotective RISK pathway, and specifically, inhibitory phosphorylation of GSK-3β (Ser 9)...
April 26, 2017: Cardiovascular Diabetology
https://www.readbyqxmd.com/read/28440361/the-role-of-echocardiography-in-fetal-tachyarrhythmia-diagnosis-a-burden-for-the-pediatric-cardiologist-and-a-review-of-the-literature
#18
Liliana Gozar, Claudiu Marginean, Rodica Toganel, Iolanda Muntean
Supraventricular tachyarrhythmia represents the most frequent fetal dysrhythmia. In the lack of diagnosis and treatment these fetuses may develop hydrops and even death. For the therapeutic approach it is important to establish the diagnosis of the type of supraventricular tachycardia. In this paper we report 29 cases with different types of supraventricular tachycardia in which the diagnosis was established using our own protocol, which allowed us to make the difference between the types of tachycardia (atrioventricular reentry tachycardia due to the accessory pathway, atrial ectopic tachycardia and permanent junctional reciprocal tachycardia)...
April 22, 2017: Medical Ultrasonography
https://www.readbyqxmd.com/read/28438723/long-term-outcomes-of-minimally-invasive-surgical-ablation-for-atrial-fibrillation-a-single-center-experience
#19
Aditya Saini, Yuhning L Hu, Vigneshwar Kasirajan, Frederick T Han, Muhammad Z Khan, Luke Wolfe, Sampath Gunda, Jayanthi N Koneru, Kenneth A Ellenbogen
BACKGROUND: Minimally invasive surgical atrial fibrillation (AF) ablation (MISAA) delivers radiofrequency energy via a thoracoscopic approach to perform pulmonary vein isolation and left atrial ganglionic plexi ablation. Data on long-term outcomes of MISAA are lacking. OBJECTIVE: We report 5-year follow-up data from a prospective cohort of patients who underwent MISAA at a single center. METHODS: One hundred nine consecutive patients (60 paroxysmal, 49 persistent; mean age 62...
April 22, 2017: Heart Rhythm: the Official Journal of the Heart Rhythm Society
https://www.readbyqxmd.com/read/28438355/early-and-frequent-defibrillator-discharge-in-patients-with-cardiac-sarcoidosis-compared-with-patients-with-idiopathic-dilated-cardiomyopathy
#20
Yoichi Takaya, Kengo Kusano, Nobuhiro Nishii, Kazufumi Nakamura, Hiroshi Ito
BACKGROUND: Little is known about the suitability of implantable cardioverter defibrillator (ICD) implantation in patients with cardiac sarcoidosis (CS). We evaluated the efficacy of ICD implantation in patients with CS, including suspected CS, compared with those with idiopathic dilated cardiomyopathy (DCM). METHODS: A total of 102 consecutive patients with definite CS, suspected CS, or DCM who underwent ICD implantation were enrolled. The endpoint was the first documentation of appropriate ICD therapy for ventricular tachyarrhythmias...
April 19, 2017: International Journal of Cardiology
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