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Atrial fibrillation in heart failure

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https://www.readbyqxmd.com/read/29237675/gene-based-risk-stratification-for-cardiac-disorders-in-lmna-mutation-carriers
#1
Suguru Nishiuchi, Takeru Makiyama, Takeshi Aiba, Kenzaburo Nakajima, Sayako Hirose, Hirohiko Kohjitani, Yuta Yamamoto, Takeshi Harita, Mamoru Hayano, Yimin Wuriyanghai, Jiarong Chen, Kenichi Sasaki, Nobue Yagihara, Taisuke Ishikawa, Kenji Onoue, Nobuyuki Murakoshi, Ichiro Watanabe, Kimie Ohkubo, Hiroshi Watanabe, Seiko Ohno, Takahiro Doi, Satoshi Shizuta, Tohru Minamino, Yoshihiko Saito, Yasushi Oginosawa, Akihiko Nogami, Kazutaka Aonuma, Kengo Kusano, Naomasa Makita, Wataru Shimizu, Minoru Horie, Takeshi Kimura
BACKGROUND: Mutations in LMNA (lamin A/C), which encodes lamin A and C, typically cause age-dependent cardiac phenotypes, including dilated cardiomyopathy, cardiac conduction disturbance, atrial fibrillation, and malignant ventricular arrhythmias. Although the type of LMNA mutations have been reported to be associated with susceptibility to malignant ventricular arrhythmias, the gene-based risk stratification for cardiac complications remains unexplored. METHODS AND RESULTS: The multicenter cohort included 77 LMNA mutation carriers from 45 families; cardiac disorders were retrospectively analyzed...
December 2017: Circulation. Cardiovascular Genetics
https://www.readbyqxmd.com/read/29233088/left-atrial-enlargement-and-clinical-considerations-in-patients-with-or-without-a-residual-interatrial-shunt-after-closure-of-the-left-atrial-appendage-with-the-watchman%C3%A2-device
#2
Blerim Luani, Thomas Groscheck, Conrad Genz, Ivan Tanev, Thomas Rauwolf, Joerg Herold, Senad Medunjanin, Alexander Schmeisser, Rüdiger C Braun-Dullaeus
BACKGROUND: Interventional closure of the left atrial appendage (LAA) in patients with non-valvular atrial fibrillation, high thromboembolic and bleeding risk or bleeding history is an alternative therapeutic strategy to oral anticoagulation. It is not known if the exclusion of the LAA from the blood circulation affects the left atrial volume (LAV) and consequently its prognostic value or the circulatory performance of the heart in humans. METHODS: We aimed to prospectively assess potential changes in baseline LAV, left ventricular ejection fraction (LVEF), NT-proBNP-level and the covered distance in the 6-min walk-test 6 weeks and 6 months after LAA closure with the WATCHMAN™ device...
December 12, 2017: BMC Cardiovascular Disorders
https://www.readbyqxmd.com/read/29229678/epitope-mapping-of-serca2a-identifies-an-antigenic-determinant-that-induces-mainly-atrial-myocarditis-in-a-j-mice
#3
Bharathi Krishnan, Chandirasegaran Massilamany, Rakesh H Basavalingappa, Arunakumar Gangaplara, Rajkumar A Rajasekaran, Muhammad Z Afzal, Vahid Khalilzad-Sharghi, You Zhou, Jean-Jack Riethoven, Shyam S Nandi, Paras K Mishra, Raymond A Sobel, Jennifer L Strande, David Steffen, Jay Reddy
Sarcoplasmic/endoplasmic reticulum Ca2+ adenosine triphosphatase (SERCA)2a, a critical regulator of calcium homeostasis, is known to be decreased in heart failure. Patients with myocarditis or dilated cardiomyopathy develop autoantibodies to SERCA2a suggesting that they may have pathogenetic significance. In this report, we describe epitope mapping analysis of SERCA2a in A/J mice that leads us to make five observations: 1) SERCA2a contains multiple T cell epitopes that induce varying degrees of myocarditis...
December 11, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/29225850/newly-developed-atrial-fibrillation-progresses-to-a-more-severe-intermacs-score-in-a-patient-with-advanced-heart-failure-due-to-dilated-cardiomyopathy
#4
Akihito Saito, Eisuke Amiya, Masaru Hatano, Yumiko Hosoya, Hisataka Maki, Daisuke Nitta, Shun Minatsuki, Masafumi Watanabe, Issei Komuro
We have presented a case of advanced HF, in which newly developed AF hastened the timing of the implantation of mechanical support. Newly developed AF in advanced HF may be intractable by medical therapies and could be a key event that determines the timing of mechanical support.
December 2017: Clinical Case Reports
https://www.readbyqxmd.com/read/29223500/impact-of-chronic-kidney-disease-on-mortality-in-adults-undergoing-balloon-aortic-valvuloplasty
#5
Puja B Parikh, Samantha Novotny, Allen Jeremias, Javed Butler, Jie Yang, Donglei Yin, Luis Gruberg
BACKGROUND: Balloon aortic valvuloplasty (BAV) is often utilized as a bridge prior to surgical or transcatheter aortic valve replacement. Chronic kidney disease (CKD) is commonly present in patients with aortic stenosis, however, its association with outcomes following BAV has not been well studied. Accordingly, we sought to assess the impact of CKD on mortality in adults undergoing BAV. METHODS: The Nationwide Inpatient Sample was screened for hospitalizations involving adults undergoing BAV from 2006 to 2012...
October 26, 2017: Cardiovascular Revascularization Medicine: Including Molecular Interventions
https://www.readbyqxmd.com/read/29222043/catheter-ablation-of-atrial-fibrillation-in-patients-with-heart-failure-and-preserved-ejection-fraction
#6
Eric Black-Maier, Xinru Ren, Benjamin A Steinberg, Cynthia L Green, Adam S Barnett, Normita Sta Rosa, Sana M Al-Khatib, Brett D Atwater, James P Daubert, Camille Frazier-Mills, Augustus O Grant, Donald D Hegland, Kevin P Jackson, Larry R Jackson, Jason I Koontz, Robert K Lewis, Albert Y Sun, Kevin L Thomas, Tristam D Bahnson, Jonathan P Piccini
BACKGROUND: Few studies have examined outcomes of catheter ablation for atrial fibrillation (AF) in patients with heart failure with preserved ejection fraction (HFpEF). OBJECTIVE: Compare outcomes of AF ablation in patients with HFpEF versus HF with reduced ejection fraction (HFrEF). METHODS: We performed a retrospective study of 230 patients with HF who underwent AF ablation, including 97 (42.2%) with HFrEF and 133 (57.8%) with HFpEF. Outcomes included adverse events, symptoms (Mayo AF Symptom Inventory [MAFSI]), New York Heart Association (NYHA) functional class, and freedom from recurrent atrial arrhythmia at 12-months...
December 5, 2017: Heart Rhythm: the Official Journal of the Heart Rhythm Society
https://www.readbyqxmd.com/read/29221502/impact-of-cardiorespiratory-fitness-on-frequency-of-atrial-fibrillation-stroke-and-all-cause-mortality
#7
Nasir Hussain, Bernard J Gersh, Karina Gonzalez Carta, Nóra Sydó, Francisco Lopez-Jimenez, Stephen L Kopecky, Randal J Thomas, Samuel J Asirvatham, Thomas G Allison
Benefits of cardiorespiratory fitness on cardiovascular health are well recognized, but the impact on incidence of atrial fibrillation (AF) and stroke, and, particularly, risk of stroke and mortality in patients with AF is less clear. From 1993 to 2010, patients referred for a treadmill exercise test (TMET) at the Mayo Clinic Rochester, MN, were retrospectively identified (N = 76,857). From this, 14,094 local residents were selected. Exclusions were age <18 years; history of heart failure, structural or valvular heart disease, AF or flutter, or stroke...
January 1, 2018: American Journal of Cardiology
https://www.readbyqxmd.com/read/29218612/transoesophageal-echocardiography-prior-to-catheter-ablation-could-be-avoided-in-atrial-fibrillation-patients-with-a-low-risk-of-stroke-and-without-filling-defects-in-the-late-phase-mdct-scan-a-retrospective-analysis-of-783-patients
#8
Zhengqin Zhai, Min Tang, Shu Zhang, Pihua Fang, Yuhe Jia, Tianjie Feng, Jiande Wang
OBJECTIVES: To test whether multidetector computed tomography (MDCT) could completely replace transoesophageal echocardiography (TEE) to detect left atrial appendage (LAA) thrombi in atrial fibrillation (AF) patients using a large sample size. METHODS: 783 patients with AF who underwent MDCT and TEE before catheter ablation were retrospectively included. Demographic data were obtained. Two radiologists blinded to clinical data made the imaging diagnosis. RESULTS: Most of the patients (96...
December 7, 2017: European Radiology
https://www.readbyqxmd.com/read/29216985/eplerenone-reduces-atrial-fibrillation-burden-without-preventing-atrial%C3%A2-electrical-remodeling
#9
Yoshio Takemoto, Rafael J Ramirez, Kuljeet Kaur, Oscar Salvador-Montañés, Daniela Ponce-Balbuena, Roberto Ramos-Mondragón, Steven R Ennis, Guadalupe Guerrero-Serna, Omer Berenfeld, José Jalife
BACKGROUND: The aldosterone inhibitor eplerenone (EPL) has been shown to reduce the incidence of atrial fibrillation (AF) in patients with systolic heart failure, but the mechanism is unknown. OBJECTIVES: This study hypothesized that by reducing atrial dilation and fibrosis in the absence of heart failure, EPL also reduces AF burden and prevents AF perpetuation. METHODS: The authors conducted a randomized controlled study in 34 sheep that were atrially tachypaced (13 ± 1 week)...
December 12, 2017: Journal of the American College of Cardiology
https://www.readbyqxmd.com/read/29212778/the-identification-of-64-novel-genetic-loci-provides-an-expanded-view-on-the-genetic-architecture-of-coronary-artery-disease
#10
Pim van der Harst, Niek Verweij
Rationale: Coronary artery disease (CAD) is a complex phenotype driven by genetic and environmental factors. 97 genetic risk loci have been identified so far, but the identification of additional susceptibility loci might be important to enhance our understanding of the genetic architecture of CAD. Objective: To expand the number of genome-wide significant loci, catalog functional insights, and enhance our understanding of the genetic architecture of CAD. Methods and Results: We performed a genome-wide association study (GWAS) in 34,541 CAD cases and 261,984 controls of UK biobank Resource followed by replication in 88,192 cases and 162,544 controls from CARDIoGRAMplusC4D...
December 6, 2017: Circulation Research
https://www.readbyqxmd.com/read/29211301/outcome-in-patients-with-left-common-pulmonary-vein-after-cryoablation-with-second-generation-cryoballoon
#11
Thomas Beiert, Pia C Lodde, Lutz P T Linneborn, Jessica Werner, Lisa Prinz, Florian Stöckigt, Markus Linhart, Lars Lickfett, Georg Nickenig, Jan W Schrickel, René P Andrié
BACKGROUND: Pulmonary vein isolation (PVI) has become a widely accepted therapy in patients suffering from symptomatic atrial fibrillation (AF). HYPOTHESIS: AF-free survival differs in patients with left common pulmonary vein (LCPV) after PVI with second generation cryoballoon. METHODS: We included patients scheduled for first PVI for paroxysmal or persistent AF. Symptomatic and/or documented arrhythmia episodes (> 30 s) were defined as AF recurrence, excluding a three month blanking period...
December 6, 2017: Pacing and Clinical Electrophysiology: PACE
https://www.readbyqxmd.com/read/29211212/comparative-study-of-electrical-stimulation-of-the-heart-with-vdd-and-ddd-pacemakers-as-to-the-evolution-to-atrial-fibrillation
#12
Nelson Leonardo Kerdahi Leite de Campos, Rubens Ramos de Andrade, Marcello Laneza Fellicio, Antônio Sergio Martins, André Monti Garzesi, Leonardo Rufino Garcia, Tassya Bueno Takeda
INTRODUCTION: The pacemaker implantation VDD is considered simpler, faster, less expensive and causes fewer complications compared to DDD. However, the VDD pacemaker has not been widely used in many centers, perhaps for fear of dysfunction of the sinus node and the reduction of atrial sensitivity by the pacemaker during follow-up after implantation. OBJECTIVE: To compare patients with DDD and VDD pacemakers regarding the evolution of chronic atrial fibrillation (AF) and length of stay outside this postoperative arrhythmia...
September 2017: Brazilian Journal of Cardiovascular Surgery
https://www.readbyqxmd.com/read/29208620/impact-of-electronic-clinical-decision-support-on-adherence-to-guideline-recommended-treatment-for-hyperlipidaemia-atrial-fibrillation-and-heart-failure-protocol-for-a-cluster-randomised-trial
#13
Maya Elizabeth Kessler, Rickey E Carter, David A Cook, Daryl Jon Kor, Paul M McKie, Laurie J Pencille, Marianne R Scheitel, Rajeev Chaudhry
INTRODUCTION: Clinical practice guidelines facilitate optimal clinical practice. Point of care access, interpretation and application of such guidelines, however, is inconsistent. Informatics-based tools may help clinicians apply guidelines more consistently. We have developed a novel clinical decision support tool that presents guideline-relevant information and actionable items to clinicians at the point of care. We aim to test whether this tool improves the management of hyperlipidaemia, atrial fibrillation and heart failure by primary care clinicians...
December 4, 2017: BMJ Open
https://www.readbyqxmd.com/read/29208425/serum-uric-acid-as-a-potential-marker-for-heart-failure-risk-in-men-on-antihypertensive-treatment-the-british-regional-heart-study
#14
S Goya Wannamethee, Olia Papacosta, Lucy Lennon, Peter H Whincup
The role of serum uric acid (SUA) as a prognostic marker for incident heart failure (HF) in hypertensive subjects is uncertain. We have prospectively examined the relationship between SUA and incident HF in 3440 men aged 60-79years separately in those on and not on antihypertensive treatment who were followed up for a mean period of 15years. Men on SUA lowering drugs and those with history of HF or myocardial infarction were excluded. There were 260 incident HF cases. The men were divided into three groups of SUA concentrations/levels (<350, 350-410 and >410μmol/L)...
November 28, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/29206857/z-disc-protein-chapb-induces-cardiomyopathy-and-contractile-dysfunction-in-the-postnatal-heart
#15
Willemijn van Eldik, Brigit den Adel, Jantine Monshouwer-Kloots, Daniela Salvatori, Saskia Maas, Ingeborg van der Made, Esther E Creemers, Derk Frank, Norbert Frey, Nicky Boontje, Jolanda van der Velden, Paul Steendijk, Christine Mummery, Robert Passier, Abdelaziz Beqqali
AIMS: The Z-disc is a crucial structure of the sarcomere and is implicated in mechanosensation/transduction. Dysregulation of Z-disc proteins often result in cardiomyopathy. We have previously shown that the Z-disc protein Cytoskeletal Heart-enriched Actin-associated Protein (CHAP) is essential for cardiac and skeletal muscle development. Furthermore, the CHAP gene has been associated with atrial fibrillation in humans. Here, we studied the misregulated expression of CHAP isoforms in heart disease...
2017: PloS One
https://www.readbyqxmd.com/read/29205499/retrospective-evaluation-of-the-effect-of-heart-rate-on-survival-in-dogs-with-atrial-fibrillation
#16
B Pedro, J Dukes-McEwan, M A Oyama, M S Kraus, A R Gelzer
BACKGROUND: Atrial fibrillation (AF) usually is associated with a rapid ventricular rate. The optimal heart rate (HR) during AF is unknown. HYPOTHESIS/OBJECTIVES: Heart rate affects survival in dogs with chronic AF. ANIMALS: Forty-six dogs with AF and 24-hour ambulatory recordings were evaluated. METHODS: Retrospective study. Holter-derived HR variables were analyzed as follows: mean HR (meanHR, 24-hour average), minimum HR (minHR, 1-minute average), maximum HR (maxHR, 1-minute average)...
December 4, 2017: Journal of Veterinary Internal Medicine
https://www.readbyqxmd.com/read/29204949/-stroke-prevention-in-atrial-fibrillation-in-germany-situational-analysis-of-treatment-reality-based-on-retrospective-data
#17
Ulrike Mergenthaler, Karel Kostev, Sven Moosmang, Inga-Marion Thate-Waschke, Sylvia Haas
BACKGROUND: Guideline-based, risk-adjusted therapy with anticoagulants reduce thromboembolic stroke risk in patients with atrial fibrillation (AF). METHOD: This study analyzed use of oral anticoagulation in German AF-patients. Access to anonymized patient records was made via IMS Health Disease Analyzer database (sample size: 113,619 patients with ICD-10 Code I48.-; observation period: 11/2010-10/2013). Results were subsequently extrapolated to all general practitioners' (GPs) and cardiological practices in Germany...
December 2017: MMW Fortschritte der Medizin
https://www.readbyqxmd.com/read/29203211/qtc-interval-cardiovascular-events-and-mortality-in-patients-with-atrial-fibrillation
#18
Andreas Reusser, Steffen Blum, Stefanie Aeschbacher, Lucien Eggimann, Peter Ammann, Paul Erne, Giorgio Moschovitis, Marcello Di Valentino, Dipen Shah, Jürg Schläpfer, Samuel Manser, Tobias Reichlin, Michael Kühne, Christian Sticherling, Stefan Osswald, David Conen
BACKGROUND: A longer QTc interval has been associated with more adverse cardiovascular events and death in the general population. Little evidence is available on these relationships among patients with atrial fibrillation (AF). METHODS: We performed a prospective observational multicenter cohort study of 1413 patients with AF. A resting 12‑lead electrocardiogram (ECG) was performed at baseline. QT interval was corrected for heart rate using the Bazett formula (QTc)...
November 24, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/29202727/atrial-fibrillation-is-not-uncommon-among-patients-with-ischemic-stroke-and-transient-ischemic-stroke-in-china
#19
Xiaomeng Yang, Shuya Li, Xingquan Zhao, Liping Liu, Yong Jiang, Zixiao Li, Yilong Wang, Yongjun Wang
BACKGROUND: Atrial fibrillation (AF) is reported to be a less frequent cause of ischemic stroke in China than in Europe and North America, but it is not clear whether this is due to underestimation. Our aim was to define the true frequency of AF-associated stroke, to determine the yield of 6-day Holter ECG to detect AF in Chinese stroke patients, and to elucidate predictors of newly detected AF. METHODS: Patients with acute ischemic stroke or transient ischemic attack (TIA) were enrolled in a prospective, multicenter cohort study of 6-day Holter monitoring within 7 days after stroke onset at 20 sites in China between 2013 and 2015...
December 4, 2017: BMC Neurology
https://www.readbyqxmd.com/read/29198533/usefulness-of-routine-transtelephonic-monitoring-for-supraventricular-tachycardia-in-infants
#20
Jonathan Yaari, Dorota Gruber, Andrew D Blaufox
OBJECTIVE: We hypothesize that routine daily transtelephonic monitoring (TTM) transmissions can accurately detect supraventricular tachycardia (SVT) in asymptomatic infants and/or assuage parental concerns rather than being used solely to diagnose arrhythmias. STUDY DESIGN: Single center, retrospective chart review of 60 patients with fetal or infant SVT prescribed TTM for at least 30 days, January 2010-September 2016. Patients were excluded if initial SVT was not documented, was perioperative, was atrial flutter/fibrillation, or chaotic atrial tachycardia...
November 30, 2017: Journal of Pediatrics
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