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Cardiac arrhythmia

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https://www.readbyqxmd.com/read/29329017/amiodarone-a-multi-channel-blocker-enhances-anticonvulsive-effect-of-carbamazepine-in-the-mouse-maximal-electroshock-model
#1
Monika Banach, Monika Popławska, Kinga K Borowicz-Reutt
Cardiac arrhythmia may occur in the course of epilepsy. Simultaneous therapy of the two diseases might be complicated by drug interactions since antiarrhythmic and antiepileptic agents share some molecular targets. The aim of this study was to evaluate the influence of amiodarone, an antiarrhythmic drug working as a multi-channel blocker, on the protective activity of four classical antiepileptic drugs in the maximal electroshock test in mice. Amiodarone at doses up to 75 mg/kg did not affect the electroconvulsive threshold in mice...
January 5, 2018: Epilepsy Research
https://www.readbyqxmd.com/read/29327964/endoscopic-removal-of-gastrointestinal-foreign-bodies-in-two-african-grey-parrots-psittacus-erithacus-and-a-hyacinth-macaw-anodorhynchus-hyacinthinus
#2
Robert J Cotton, Stephen J Divers
Two African grey parrots ( Psittacus erithacus) and one hyacinth macaw ( Anodorhynchus hyacinthinus) were examined because of varying clinical signs ranging from general lethargy to seizure-like episodes and regurgitation. Radiography and fluoroscopy in the 3 birds demonstrated variable degrees of gastric abnormalities, suggesting the presence of foreign material or stricture-like defects. Upper gastrointestinal rigid endoscopy by ingluviotomy revealed foreign bodies that were removed endoscopically. Minor postoperative complications were pulmonary congestion or mild aspiration and cardiac arrhythmia, both of which resolved, and no serious deleterious effects were associated with endoscopy in the short or long term...
December 2017: Journal of Avian Medicine and Surgery
https://www.readbyqxmd.com/read/29327638/hybrid-and-surgical-procedures-for-the-treatment-of-persistent-and-longstanding-persistent-atrial-fibrillation
#3
Jose M Sanchez, Ghannam Al-Dosari, Sherman Chu, Ramin Beygui, Tobias Deuse, Nitish Badhwar, Randall J Lee
Atrial fibrillation (AF) is the most common cardiac arrhythmia. The incidence of AF increases with age and is associated with increased stroke, heart failure and mortality. Persistent and long standing persistent AF is difficult to treat and often refractory to medical therapy and catheter ablation. Areas covered: This article reviews the historical development of the surgical Cox-MAZE procedure and current hybrid and minimally invasive surgical approaches for the treatment of persistent and long standing persistent AF...
January 12, 2018: Expert Review of Cardiovascular Therapy
https://www.readbyqxmd.com/read/29327276/portal-congestion-and-intestinal-edema-in-hospitalized-patients-with-heart-failure
#4
Yuki Ikeda, Shunsuke Ishii, Mayu Yazaki, Teppei Fujita, Yuichiro Iida, Toyoji Kaida, Takeru Nabeta, Eiji Nakatani, Emi Maekawa, Tomoyoshi Yanagisawa, Toshimi Koitabashi, Takayuki Inomata, Junya Ako
An interaction between the intestine and cardiovascular disease has been suggested. We thought to clarify the association between intestinal conditions and clinical outcomes in patients with heart failure (HF). Hemodynamic parameters in intestinal vessels [superior mesenteric artery (SMA), inferior mesenteric artery (IMA), and portal vein (PV)] and average colon wall thickness (aCWT) from the ascending colon to sigmoid colon were evaluated in 224 hospitalized HF patients. Echocardiographic parameters and composite event rates (all-cause mortality, readmission for HF deterioration, major ventricular arrhythmias) were also examined...
January 11, 2018: Heart and Vessels
https://www.readbyqxmd.com/read/29326834/ablation-of-atrial-fibrillation-in-patients-with-congenital-heart-disease
#5
Marwan M Refaat, Jad Ballout, Moussa Mansour
With improved surgical techniques and medical management for patients with congenital heart diseases, more patients are living longer and well into adulthood. This improved survival comes with a price of increased morbidity, mainly secondary to increased risk of tachyarrhythmias. One of the major arrhythmias commonly encountered in this subset of cardiac patients is AF. Similar to the general population, the risk of AF increases with advancing age, and is mainly secondary to the abnormal anatomy, abnormal pressure and volume parameters in the hearts of these patients and to the increased scarring and inflammation seen in the left atrium following multiple surgical procedures...
December 2017: Arrhythmia & Electrophysiology Review
https://www.readbyqxmd.com/read/29326130/inward-rectifier-potassium-channels-kir2-x-and-caveolin-3-domain-specific-interaction-implications-for-purkinje-cell-dependent-ventricular-arrhythmias
#6
Ravi Vaidyanathan, Hanora Van Ert, Kazi T Haq, Stefano Morotti, Samuel Esch, Elise C McCune, Eleonora Grandi, Lee L Eckhardt
BACKGROUND: In human cardiac ventricle, IK1 is mainly comprised Kir2.1, but Kir2.2 and Kir2.3 heterotetramers occur and modulate IK1. Long-QT syndrome-9-associated CAV3 mutations cause decreased Kir2.1 current density, but Kir2.x heterotetramers have not been studied. Here, we determine the effect of long-QT syndrome-9-CAV3 mutation F97C on Kir2.x homo- and heterotetramers and model-associated arrhythmia mechanisms. METHODS AND RESULTS: Super-resolution microscopy, co-immunoprecipitation, cellular electrophysiology, on-cell Western blotting, and simulation of Purkinje and ventricular myocyte mathematical models were used...
January 2018: Circulation. Arrhythmia and Electrophysiology
https://www.readbyqxmd.com/read/29326128/idiopathic-ventricular-arrhythmias-originating-from-the-vicinity-of-the-communicating-vein-of-cardiac-venous-systems-at-the-left-ventricular-summit
#7
Yuki Komatsu, Akihiko Nogami, Yasutoshi Shinoda, Keita Masuda, Takeshi Machino, Kenji Kuroki, Hiro Yamasaki, Yukio Sekiguchi, Kazutaka Aonuma
BACKGROUND: The communicating vein (CV) between the great cardiac vein and small cardiac venous systems passes between the aortic and pulmonary annulus and is located in close association with the left ventricular summit (summit CV). METHODS AND RESULTS: Thirty-one patients with idiopathic ventricular arrhythmias (VAs) underwent mapping of the left ventricular summit by using a 2F microcatheter introduced into the summit CV with coronary sinus venographic guidance...
January 2018: Circulation. Arrhythmia and Electrophysiology
https://www.readbyqxmd.com/read/29325638/implantable-cardioverter-defibrillators-in%C3%A2-children-and-adolescents-with-brugada%C3%A2-syndrome
#8
M Cecilia Gonzalez Corcia, Juan Sieira, Gudrun Pappaert, Carlo de Asmundis, Gian Battista Chierchia, Mark La Meir, Andrea Sarkozy, Pedro Brugada
BACKGROUND: Young patients presenting with symptomatic Brugada syndrome have very high risks for ventricular arrhythmias and should be carefully considered for implantable cardioverter-defibrillator (ICD) placement. However, this therapy is associated with high rates of inappropriate shocks and device-related complications. OBJECTIVES: This study investigated clinical features, management, and long-term follow-up of young patients with Brugada syndrome and ICD. METHODS: Patients diagnosed with Brugada syndrome, who underwent implantation of an ICD at an age of ≤20 years, were studied...
January 16, 2018: Journal of the American College of Cardiology
https://www.readbyqxmd.com/read/29325364/-the-efficacy-and-safety-of-coil-embolization-of-septal-branch-in-the-treatment-of-patients-with-obstructive-hypertrophic-cardiomyopathy
#9
H Liu, Q Wu, H W Tan, J Pang
Objective: To observe the clinical efficacy and safety of coil embolization of septal branch in the treatment of obstructive hypertrophic cardiomyopathy (HOCM). Methods: Eighteen patients with HOCM hospitalized in our department from September 2014 to October 2016 were enrolled in this study. There were 12 males and 6 females in this cohort and the age of patients ranged from 22 to 64 years old. Left ventricular outflow tract gradient (LVOTG) was derived from echocardiographic apical five-chamber view at pre-operation and at 48 hours and 6 months post operation...
December 24, 2017: Zhonghua Xin Xue Guan Bing za Zhi
https://www.readbyqxmd.com/read/29325338/-supplementation-with-high-dose-l-carnitine-on-hemodialysis-tolerance-in-uremic-patients-with-severe-heart-diseases
#10
Y J Pan, F P Lu
Objective: To investigate the effect of intravenous supplementation with high-dose L-carnitinen on hemodialysis tolerance in uremic patients with severe heart disease (ischemic heart disease, congestive heart disease and arrhythmia). Methods: Between March 2012 and March 2017, 5 gram L-carnitine was given after the completion of each hemodialysis treatment (3-4 times a week) over a period of two weeks in 29 maintenance hemodialysis patients with severe heart diseases manifested by frequently symptomatic hypotension, chest tightness, wheezing, palpitation, chest pain and other symptoms during hemodialysis...
December 26, 2017: Zhonghua Yi Xue za Zhi [Chinese medical journal]
https://www.readbyqxmd.com/read/29325222/pneumonia-as-a-cardiovascular-disease
#11
REVIEW
Marcos I Restrepo, Luis F Reyes
Community-acquired pneumonia (CAP) is an important cause of death around the globe. Up to 30% of patients admitted to hospital for CAP develop cardiovascular complications (i.e. new/worsening heart failure, new/worsening arrhythmias, myocardial infarctions and/or strokes), acutely and up to 10 years thereafter. Cardiac complications result from complex interactions between preexisting conditions, relative ischaemia, upregulation of the sympathetic system, systemic inflammation and direct pathogen-mediated damage to the cardiovascular system...
January 11, 2018: Respirology: Official Journal of the Asian Pacific Society of Respirology
https://www.readbyqxmd.com/read/29324898/the-etomidate-analog-et-26-hcl-retains-superior-myocardial-performance-comparisons-with-etomidate-in-vivo-and-in-vitro
#12
Xingxing Liu, Haibo Song, Jun Yang, Cheng Zhou, Yi Kang, Linghui Yang, Jin Liu, Wensheng Zhang
OBJECTIVE: (R)-2-methoxyethyl1-(1-phenylethyl)-1H-imidazole-5-carboxylate hydrochloride (ET-26 HCl) is a novel etomidate analogue. The purpose of this study was to characterize whether ET-26 HCl could retain the superior myocardial performance of etomidate in vivo and in vitro. METHODS: In vivo, the influence of ET-26 HCl and etomidate on the cardiac function of dogs was confirmed using echocardiography and electrocardiogram. In vitro, a Langendorff preparation was used to examine direct myocardial performance in isolated rat hearts, and a whole-cell patch-clamp technique was used to study effects on the human ether-a-go-go-related gene (hERG) channel...
2018: PloS One
https://www.readbyqxmd.com/read/29324812/identifying-unmet-clinical-need-in-hypertrophic-cardiomyopathy-using-national-electronic-health-records
#13
Mar Pujades-Rodriguez, Oliver P Guttmann, Arturo Gonzalez-Izquierdo, Bram Duyx, Constantinos O'Mahony, Perry Elliott, Harry Hemingway
INTRODUCTION: To evaluate unmet clinical need in unselected hypertrophic cardiomyopathy (HCM) patients to determine the risk of a wide range of subsequent cardiovascular disease endpoints and safety endpoints relevant for trial design. METHODS: Population based cohort (CALIBER, linked primary care, hospital and mortality records in England, period 1997-2010), all people diagnosed with HCM were identified and matched by age, sex and general practice with ten randomly selected people without HCM...
2018: PloS One
https://www.readbyqxmd.com/read/29324314/down-regulation-of-mir-133a-b-in-patients-with-myocardial-infarction-correlates-with-the-presence-of-ventricular-fibrillation
#14
Emanuela Boštjančič, Tanisa Brandner, Nina Zidar, Damjan Glavač, Dušan Štajer
MicroRNAs (miRNAs) are important regulators of physiologic and pathologic conditions of the heart. Animal models of heart diseases have shown that miRNAs may contribute to the development of arrhythmias. However, little is known about the expression of muscle- and cardiac-specific miRNAs in patients with myocardial infarction (MI) who have developed ventricular fibrillation (VF). Our study included 47 patients who had died from myocardial infarction (MI), 23 with clinically proven VF and 24 without VF. Autopsy samples of infarcted tissue and remote myocardium were available (n = 94)...
January 8, 2018: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/29323733/photo-induced-toxicity-following-exposure-to-crude-oil-and-ultraviolet-radiation-in-two-australian-fishes
#15
Lauren E Sweet, Andrew T Revill, Joanna Strzelecki, Sharon E Hook, Jeffrey M Morris, Aaron P Roberts
Some polycyclic aromatic hydrocarbons (PAHs), a component of crude oil, are known to cause increased toxicity when organisms are co-exposed with ultraviolet radiation, resulting in photo-induced toxicity. The photodynamic characteristic of some PAHs are of particular concern to places like Australia with high ultraviolet radiation levels. The objective of this study was to characterize the photo-induced toxicity of an Australian Northwest Shelf oil to early life stage yellowtail kingfish (Seriola lalandi) and black bream (Acanthopagrus butcheri)...
January 11, 2018: Environmental Toxicology and Chemistry
https://www.readbyqxmd.com/read/29321418/optimal-medications-and-appropriate-implantable-cardioverter-defibrillator-shocks-in-aborted-sudden-cardiac-death-due-to-coronary-spasm
#16
Shozo Sueda, Hiroaki Kohno
Background Life-threatening ventricular arrhythmias are recognized in patients with coronary spastic angina. Implantable cardioverter-defibrillators (ICDs) are effective in patients with structural heart disease and ventricular fibrillation. However, the optimal medication for patients with aborted sudden cardiac death (SCD) due to coronary artery spasm after the implantation of ICD remains controversial. Methods We investigated the medications and the numbers of appropriate ICD shocks in 137 patients with a history of aborted SCD due to coronary spasm...
January 11, 2018: Internal Medicine
https://www.readbyqxmd.com/read/29320987/effect-of-intracoronary-agents-on-the-no-reflow-phenomenon-during-primary-percutaneous-coronary-intervention-in-patients-with-st-elevation-myocardial-infarction-a-network-meta-analysis
#17
Xiaowei Niu, Jingjing Zhang, Ming Bai, Yu Peng, Shaobo Sun, Zheng Zhang
BACKGROUND: Despite the restoration of epicardial flow after primary percutaneous coronary intervention (PPCI), myocardial reperfusion remains impaired in a significant proportion of patients. We performed a network meta-analysis to assess the effect of 7 intracoronary agents (adenosine, anisodamine, diltiazem, nicorandil, nitroprusside, urapidil, and verapamil) on the no-reflow phenomenon in patients with ST-elevation myocardial infarction (STEMI) undergoing PPCI. METHODS: Database searches were conducted to identify randomized controlled trials (RCTs) comparing the 7 agents with each other or with standard PPCI...
January 10, 2018: BMC Cardiovascular Disorders
https://www.readbyqxmd.com/read/29319785/diagnostic-accuracy-and-prognostic-value-of-simultaneous-hybrid-18f-fluorodeoxyglucose-positron-emission-tomography-magnetic-resonance-imaging-in-cardiac-sarcoidosis
#18
Eleanor C Wicks, Leon J Menezes, Anna Barnes, Saidi A Mohiddin, Neha Sekhri, Joanna C Porter, Helen L Booth, Emily Garrett, Riyaz S Patel, Menelaos Pavlou, Ashley M Groves, Perry M Elliott
Aims: Cardiac death is the leading cause of mortality in patients with sarcoidosis, yet cardiac involvement often remains undetected. Cardiovascular magnetic resonance imaging (CMR) and 18F-fluorodeoxyglucose (FDG)-positron emission tomography (PET) have been used to diagnose cardiac sarcoidosis (CS) yet never simultaneously in a cohort. This study sought to assess the diagnostic and prognostic utility of simultaneous hybrid cardiac PET/MR. Methods and results: Fifty-one consecutive patients with suspected CS (age 50 ± 13 years, 31 males) underwent simultaneous PET/MR following a high-fat/low-carbohydrate diet and 12-h fast...
January 8, 2018: European Heart Journal Cardiovascular Imaging
https://www.readbyqxmd.com/read/29317431/suppression-of-activated-foxo-transcription-factors-in-the-heart-prolongs-survival-in-a-mouse-model-of-laminopathies
#19
Gaelle Auguste, Priyatansh Gurha, Raffaella Lombardi, Cristian Coarfa, James T Willerson, Ali J Marian
Rationale: Mutations in the LMNA gene, encoding nuclear inner membrane protein Lamin A/C, cause distinct phenotypes, collectively referred to as laminopathies. Heart failure, conduction defects, and arrhythmias are the common causes of death in laminopathies. Objective: To identify and therapeutically target the responsible mechanism(s) for cardiac phenotype in laminopathies. Methods and Results: Whole heart RNA sequencing was performed prior to the onset of cardiac dysfunction in the Lmna-/- and matched control mice...
January 9, 2018: Circulation Research
https://www.readbyqxmd.com/read/29317337/heart-and-bile-acids-clinical-consequences-of-altered-bile-acid-metabolism
#20
REVIEW
Tharni Vasavan, Elisa Ferraro, Effendi Ibrahim, Peter Dixon, Julia Gorelik, Catherine Williamson
Cardiac dysfunction has an increased prevalence in diseases complicated by liver cirrhosis such as primary biliary cholangitis and primary sclerosing cholangitis. This observation has led to research into the association between abnormalities in bile acid metabolism and cardiac pathology. Approximately 50% of liver cirrhosis cases develop cirrhotic cardiomyopathy. Bile acids are directly implicated in this, causing QT interval prolongation, cardiac hypertrophy, cardiomyocyte apoptosis and abnormal haemodynamics of the heart...
January 6, 2018: Biochimica et Biophysica Acta
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