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Cardiac arrhythmia

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https://www.readbyqxmd.com/read/27914158/causes-of-death-in-an-acute-psychiatric-inpatient-unit-of-a-portuguese-general-hospital
#1
Sofia Barbosa, Márcia Sequeira, Sara Castro, Rita Manso, Catarina Klut Câmara, Bruno Trancas, Nuno Borja-Santos, Teresa Maia
INTRODUCTION: Psychiatric patients are at increased risk of death from a number of natural and unnatural causes. This study examines the mortality causes of all psychiatric inpatients of an acute psychiatric unit at a general hospital in Portugal for sixteen years (1998 to 2013). MATERIAL AND METHODS: Twenty-one inpatients died at the inpatient unit between 1998 and 2013 (average 1.3 per year). A retrospective study through case-file review was carried to collect demographic characteristics, medical and psychiatry diagnosis...
August 2016: Acta Médica Portuguesa
https://www.readbyqxmd.com/read/27913400/incidence-risk-factors-and-outcome-of-life-threatening-ventricular-arrhythmias-in-giant-cell-myocarditis
#2
Kaj Ekström, Jukka Lehtonen, Riina Kandolin, Anne Räisänen-Sokolowski, Kaisa Salmenkivi, Markku Kupari
BACKGROUND: Ventricular tachyarrhythmias are characteristic of giant cell myocarditis, but their true incidence, predictors, and outcome are unknown. METHODS AND RESULTS: Our work involved 51 patients with giant cell myocarditis (35 women) aged 52±12 years. Their medical records were reviewed for history, results of laboratory and imaging studies, and occurrence of serious cardiac events, including life-threatening ventricular tachyarrhythmias. Sudden cardiac death (fatal or aborted) was the primary end point of our analyses, whereas the composite of sudden cardiac death and ventricular tachycardia requiring treatment constituted the secondary end point...
December 2016: Circulation. Arrhythmia and Electrophysiology
https://www.readbyqxmd.com/read/27913009/quantitative-changes-in-late-gadolinium-enhancement-at-cardiac-magnetic-resonance-in-the-early-phase-of-acute-myocarditis
#3
Enrico Ammirati, Francesco Moroni, Paola Sormani, Angelica Peritore, Angela Milazzo, Giuseppina Quattrocchi, Manlio Cipriani, Fabrizio Oliva, Cristina Giannattasio, Maria Frigerio, Alberto Roghi, Paolo G Camici, Patrizia Pedrotti
BACKGROUND: The presence of late gadolinium enhancement (LGE) at cardiac magnetic resonance (CMR) has diagnostic and prognostic value in patients with acute myocarditis (AM). Aim of our study was to quantify the changes in LGE extension (LGE%) early after AM and evaluate its relations with biventricular function and morphology. METHODS: We investigated 76 consecutive patients with AM (acute onset of chest pain/heart failure/ventricular arrhythmias not explained by other causes, and raised troponin) that met CMR criteria based on myocardial oedema at T2-weighted images and LGE on post-contrast images at median time of 6days from onset of symptoms...
November 23, 2016: International Journal of Cardiology
https://www.readbyqxmd.com/read/27912925/cardiac-arrest-in-pediatric-patients-receiving-azithromycin
#4
Santiago O Valdés, Jeffrey J Kim, Mary C Niu, Caridad M de la Uz, Christina Y Miyake, Brady S Moffett
OBJECTIVE: To compare outcomes of pediatric patients treated with azithromycin compared with penicillin or cephalosporin. We hypothesized that azithromycin use would not be associated with increased cardiac mortality in the pediatric population. STUDY DESIGN: Retrospective cohort study from the Pediatric Health Information System database between 2008 and 2012. Patients <19 years of age with a principal diagnosis of community-acquired pneumonia who received an antibiotic were included...
November 29, 2016: Journal of Pediatrics
https://www.readbyqxmd.com/read/27910059/gene-therapy-for-post-infarction-ventricular-tachycardia
#5
J Kevin Donahue
Cardiac arrhythmias are a leading cause of morbidity and mortality in the developed world. In particular, cardiac arrest or sudden cardiac death is the leading cause of death in these countries. Death generally results from a ventricular tachyarrhythmia, and pathology data have shown that cardiac arrest victims very frequently have evidence of coronary atherosclerosis with either acute ischemia or healed myocardial infarction. In this work, we describe an animal model that reproducibly has inducible ventricular tachyarrhythmias after healing of a myocardial infarction scar and a gene delivery method that allows gene transfer to the scar and surrounding myocardial tissues...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/27909544/reducing-the-risk-of-stroke-in-patients-with-nonvalvular-atrial-fibrillation-with-direct-oral-anticoagulants-is-one-of-these-not-like-the-others
#6
REVIEW
Paul P Dobesh Pharm D, John Fanikos Mba R Ph
Atrial fibrillation (AF) is the most common sustained cardiac arrhythmia and increases risk of stroke by nearly 5-fold. While warfarin has been employed successfully to reduce the risk of stroke in these patients, there are a number of challenges with therapy. These include the need for therapeutic monitoring due to variability in patient response, frequent dose adjustments, numerous drug-drug, drug-food, and drug-disease interactions, and a heightened risk of thrombosis and bleeding due to these issues. Current guidelines recommend that the vitamin K antagonists (VKA) or direct oral anticoagulants (DOACs) should be used for thromboprophylaxis in patients with nonvalvular AF at risk for stroke or systemic embolic events...
August 2016: Journal of Atrial Fibrillation
https://www.readbyqxmd.com/read/27909535/search-for-the-ideal-antithrombotic-drug-utopian-task-likely-is-implemented-already
#7
REVIEW
Petras Stirbys Md PhD
Atrial fibrillation is the most prevalent cardiac arrhythmia with a high risk of ischemic stroke. Thromboprophylaxis plays a key role in prevention of cardioembolic and non-cardioembolic events. Oral antithrombotic drugs are most often used to reduce hypercoagulable state. Patients may suffer from both under- and overtreatment compromising the outcomes. Medication peculiarities at large are well-known and widely debated. Non-adherence to antithrombotic drug regimen poses a significant risk of stroke. There is a pressing need for more detailed delineation of risk factors, namely by incorporation of the letter "N" (meaning "Non-adherence to drug therapy") into the well-known risk score alphanumeric display: CHA2DS2N-VASc...
August 2016: Journal of Atrial Fibrillation
https://www.readbyqxmd.com/read/27909533/patient-specific-induced-pluripotent-stem-cell-derived-cardiomyocytes-for-drug-development-and-screening-in-catecholaminergic-polymorphic-ventricular-tachycardia
#8
REVIEW
Ben Jehuda Ronen, Barad Lili
Catecholaminergic polymorphic ventricular tachycardia (CPVT), an inherited arrhythmia often leading to sudden cardiac death in children and young adults, is characterized by polymorphic/bidirectional ventricular tachycardia induced by adrenergic stimulation associated with emotionally stress or physical exercise. There are two forms of CPVT: 1. CPVT1 is caused by mutations in the RYR2 gene, encoding for ryanodine receptor type 2. CPVT1 is the most common form of CPVT in the population, and is inherited by a dominant mechanism...
August 2016: Journal of Atrial Fibrillation
https://www.readbyqxmd.com/read/27909501/-two-for-the-price-of-one-a-single-lead-implantable-cardioverter-defibrillator-system-with-a-floating-atrial-dipole
#9
REVIEW
Nicole E Worden Md, Musab Alqasrawi Md, Siva M Krothapalli Md, Alexander Mazur Md
In patients known to be a high risk for sudden cardiac arrest, implantable cardioverter defibrillators (ICD) are a proven therapy to reduce risk of death. However, in patients without conventional indications for pacing, the optimal strategy for type of device, dual- versus single-chamber, remains debatable. The benefit of prophylactic pacing in this category of patients has never been documented. Although available atrial electrograms in a dual chamber system improve interpretation of stored arrhythmia events, allow monitoring of atrial fibrillation and may potentially reduce the risk of inappropriate shocks by enhancing automated arrhythmia discrimination, the use of dual-chamber ICDs has a number of disadvantages...
April 2016: Journal of Atrial Fibrillation
https://www.readbyqxmd.com/read/27909488/atrial-fibrillation-and-sleep-apnea-considerations-for-a-dual-epidemic
#10
REVIEW
Patricia Tung Md, Elad Anter Md
Atrial fibrillation (AF) is the most common cardiac arrhythmia and shares many of the same risk factors as another common clinical condition, sleep apnea. The estimated prevalence of sleep apnea has increased over the past decade, and reflects a parallel increase in the most prominent risk factors of obesity and overweight. Both obstructive and central sleep apnea have been associated with AF in multiple studies, with the risk of AF increasing 2-4-fold compared to those without sleep breathing disorder. Continuous positive airway pressure (CPAP) has been shown to reduce the rate of AF recurrence following catheter ablation in patients with sleep apnea...
April 2016: Journal of Atrial Fibrillation
https://www.readbyqxmd.com/read/27909484/lyme-arrhythmia-in-an-avid-golfer-a-diagnostic-challenge-and-a-therapeutic-dilemma
#11
Ujjwal Rastogi, Dr Nidhi Kumars
Lyme disease is a multisystem disorder affecting dermatologic, cardiac, nervous and musculoskeletal systems. Cardiac manifestations occur in about 5% of Lyme infections and stem from the involvement of the cardiac conduction system, resulting in varying degrees of sino-atrioventricular block. Occasionally, Lyme infection may also present with myopericarditis. Unlike isolated conduction node disease, myocardial involvement presents a great diagnostic and therapeutic dilemma for the physician. We report the case of a 68 year-old male cardiologist who presented with new onset exertional dyspnea and palpitations...
February 2016: Journal of Atrial Fibrillation
https://www.readbyqxmd.com/read/27909483/from-incidental-mechanically-induced-arrhythmias-to-reflex-defined-arrhythmogenicity-on-the-track-of-the-ternary-reflex-system-resemblance-to-the-infancy-of-new-era-or-rediscovery
#12
REVIEW
Petras Stirbys Md PhD
The underlying pathophysiology of supraventricular and ventricular arrhythmias remains a matter of intense investigation. Though evolving, the contemporary explanations do not encompass all aspects of arrhythmogenicity. An improved understanding of arrhythmia substrate is needed to augment therapeutic capabilities. Our observation and literature sources demonstrate relatively high incidence of transitory arrhythmias which are non-intentionally generated by the endocardial lead/catheter manipulation. These findings are interesting and potentially may crystallize the reflex-dependent proarrhythmic cardiac activity...
February 2016: Journal of Atrial Fibrillation
https://www.readbyqxmd.com/read/27909475/ablation-of-atrial-fibrillation-in-combination-with-left-atrial-appendage-occlusion-in-a-single-procedure-rationale-and-technique
#13
REVIEW
Ignacio García-Bolao, Naiara Calvo, Alfonso Macias, Joaquin Barba, Nahikari Salterain, Pablo Ramos, Gabriel Ballesteros, Renzo Neglia
Atrial fibrillation (AF) is the most common sustained cardiac arrhythmia, and is associated with a fivefold increase in the risk of ischemic stroke and systemic embolism. Left atrial appendage (LAA) is the source of thrombi in up to 90% of patients with nonvalvular atrial fibrillation (AF). Although thromboembolic prophylaxis by means of oral anticoagulants (OAC) has been shown to be very effective (OAC), they also confer an inevitably risk of serious bleeding. Catheter ablation (CA) is an effective treatment for symptomatic AF but its role in stroke prevention remains unproved...
February 2016: Journal of Atrial Fibrillation
https://www.readbyqxmd.com/read/27908349/truncating-flnc-mutations-are-associated-with-high-risk-dilated-and-arrhythmogenic-cardiomyopathies
#14
Martín F Ortiz-Genga, Sofía Cuenca, Matteo Dal Ferro, Esther Zorio, Ricardo Salgado-Aranda, Vicente Climent, Laura Padrón-Barthe, Iria Duro-Aguado, Juan Jiménez-Jáimez, Víctor M Hidalgo-Olivares, Enrique García-Campo, Chiara Lanzillo, M Paz Suárez-Mier, Hagith Yonath, Sonia Marcos-Alonso, Juan P Ochoa, José L Santomé, Diego García-Giustiniani, Jorge L Rodríguez-Garrido, Fernando Domínguez, Marco Merlo, Julián Palomino, María L Peña, Juan P Trujillo, Alicia Martín-Vila, Davide Stolfo, Pilar Molina, Enrique Lara-Pezzi, Francisco E Calvo-Iglesias, Eyal Nof, Leonardo Calò, Roberto Barriales-Villa, Juan R Gimeno-Blanes, Michael Arad, Pablo García-Pavía, Lorenzo Monserrat
BACKGROUND: Filamin C (encoded by the FLNC gene) is essential for sarcomere attachment to the plasmatic membrane. FLNC mutations have been associated with myofibrillar myopathies, and cardiac involvement has been reported in some carriers. Accordingly, since 2012, the authors have included FLNC in the genetic screening of patients with inherited cardiomyopathies and sudden death. OBJECTIVES: The aim of this study was to demonstrate the association between truncating mutations in FLNC and the development of high-risk dilated and arrhythmogenic cardiomyopathies...
December 6, 2016: Journal of the American College of Cardiology
https://www.readbyqxmd.com/read/27908250/hypoglycemia-and-cardiac-arrhythmia-mechanisms-evidence-base-and-current-recommendations
#15
Sitara Gulrukh Khan, Mohammed Shahriar Huda
BACKGROUND: With the use of intensive insulin therapy and insulin secretagogues to optimize glycemic control in diabetes, hypoglycemia continues to present a clinical challenge. Hypoglycemia has been implicated in nocturnal sudden death in type 1 diabetes, and the mechanism underlying this is postulated to be cardiac arrhythmia. OBJECTIVE: This article reviews the evidence surrounding hypoglycemia and cardiac arrhythmia. METHODS: A structured search of the Pubmed bibliographic database was undertaken, and relevant peer-reviewed articles on the topic were included in the review...
December 1, 2016: Current Diabetes Reviews
https://www.readbyqxmd.com/read/27908173/pacemaker-and-icd-oversensing-induced-by-movements-near-the-mri-scanner-bore
#16
E Mattei, F Censi, G Calcagnini, R Falsaperla, E Genovese, A Napolitano, V Cannatà
PURPOSE: The effect of the movement near the MRI scanner bore for people with a pacemaker (PM) or an implantable cardioverter defibrillator (ICD) is experimentally evaluated and discussed. METHODS: The authors performed in vitro measurements on a saline-filled human-shaped phantom (male, 170 cm height), equipped first with an MR-conditional PM (bicameral configuration, DDD programming), then with an MR-conditional ICD (biventricular configuration, detection algorithms enable but shock delivery disable)...
December 2016: Medical Physics
https://www.readbyqxmd.com/read/27907878/ultrasound-in-cardiac-trauma
#17
Theodosios Saranteas, Andreas F Mavrogenis, Christina Mandila, John Poularas, Fotios Panou
In the perioperative period, the emergency department or the intensive care unit accurate assessment of variable chest pain requires meticulous knowledge, diagnostic skills, and suitable usage of various diagnostic modalities. In addition, in polytrauma patients, cardiac injury including aortic dissection, pulmonary embolism, acute myocardial infarction, and pericardial effusion should be immediately revealed and treated. In these patients, arrhythmias, mainly tachycardia, cardiac murmurs, or hypotension must alert physicians to suspect cardiovascular trauma, which would potentially be life threatening...
November 5, 2016: Journal of Critical Care
https://www.readbyqxmd.com/read/27906655/methodology-considerations-in-phase-mapping-of-human-cardiac-arrhythmias
#18
Ramya Vijayakumar, Sunil K Vasireddi, Phillip S Cuculich, Mitchell N Faddis, Yoram Rudy
BACKGROUND: Phase analysis of cardiac arrhythmias, particularly atrial fibrillation, has gained interest because of the ability to detect organized stable drivers (rotors) and target them for therapy. However, the lack of methodology details in publications on the topic has resulted in ongoing debate over the phase mapping technique. By comparing phase maps and activation maps, we examined advantages and limitations of phase mapping. METHODS AND RESULTS: Seven subjects were enrolled...
November 2016: Circulation. Arrhythmia and Electrophysiology
https://www.readbyqxmd.com/read/27905927/characteristics-and-outcomes-of-diabetic-patients-with-an-implantable-cardioverter-defibrillator-in-a-real-world-setting-results-from-the-israeli-icd-registry
#19
Hillel Steiner, Michael Geist, Ilan Goldenberg, Mahmoud Suleiman, Michael Glikson, Alexander Tenenbaum, Moshe Swissa, Enrique Z Fisman, Gregory Golovchiner, Boris Strasberg, Alon Barsheshet
AIMS: There are limited data regarding the effect of diabetes mellitus (DM) on the risks of both appropriate and inappropriate implantable cardioverter defibrillator (ICD) therapy. The present study was designed to compare the outcome of appropriate and inappropriate ICD therapy in patients with or without DM. METHODS AND RESULTS: The risk of a first appropriate ICD therapy for ventricular tachyarrhythmias (including anti tachycardia pacing and shock) was compared between 764 DM and 1346 non-DM patients enrolled in the national Israeli ICD registry...
December 1, 2016: Cardiovascular Diabetology
https://www.readbyqxmd.com/read/27904907/the-impact-of-cd4-cd28-null-t-lymphocytes-on-atrial-fibrillation-and-mortality-in-patients-with-chronic-heart-failure
#20
Patrick Sulzgruber, Lorenz Koller, Max-Paul Winter, Bernhard Richter, Steffen Blum, Magdalena Korpak, Martin Hülsmann, Georg Goliasch, Johann Wojta, Alexander Niessner
Atrial fibrillation (AF) represents the most common cardiac arrhythmia. Especially in patients with chronic heart failure (CHF) the development of AF represents a severe complication resulting in haemodynamic deterioration. While pro-inflammatory cytokines proved to have a pivotal role in the development and progression of both AF and CHF, less attention has been paid to the cellular immunity. Therefore we prospectively enrolled 112 patients with CHF and performed fluorescein-activated cell sorting (FACS). Patients were stratified in two subgroups according to patients presenting with AF (n=56) and patients free of AF (n=56)...
December 1, 2016: Thrombosis and Haemostasis
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