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https://www.readbyqxmd.com/read/28440600/impact-of-atrial-fibrillation-detected-by-extended-monitoring-a-population-based-cohort-study
#1
Mathias C Busch, Stefan Gross, Dietrich Alte, Jan A Kors, Henry Völzke, Till Ittermann, André Werner, Anne Krüger, Raila Busch, Marcus Dörr, Stephan B Felix
BACKGROUND: The clinical relevance of extended monitoring of AF in the general population is unclear. The study evaluated the detection of AF using transtelephonic electrocardiography and the clinical relevance of additional AF findings, especially with regard to stroke risk and mortality. METHODS: The data of 1678 volunteers participating in the tele-ECG-subproject of the Study of Health in Pomerania was evaluated. Occurrence of AF as revealed by tele-ECG and conventional ECG was evaluated...
April 25, 2017: Annals of Noninvasive Electrocardiology
https://www.readbyqxmd.com/read/28440455/%C3%AE-adrenoceptor-mediated-enhanced-inducibility-of-atrial-fibrillation-in-a-canine-system-inflammation-model
#2
Ying-Ying Chen, Ze-Wei Sun, Jian-Ping Jiang, Xiao-Dong Kang, Lin-Lin Wang, Yue-Liang Shen, Xu-Dong Xie, Liang-Rong Zheng
The exact mechanism associated with inflammation and atrial fibrillation (AF) remains unknown. The aim of the present study was to investigate the roles of connexin 43 (Cx43) and a1‑adrenergic receptor (α1‑AR) activation in the pathogenesis of system inflammation‑induced AF. A canine model of chronic low‑grade system inflammation was established by administrating a low dose of lipopolysaccharide (LPS; 0.1 µg/kg) for 2 weeks. Programmed stimulation was applied on the right atrial appendage to determine the effective refractory periods (ERP) and the window of vulnerability (WOV)...
April 13, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28439778/dabigatran-etexilate-appropriate-use-in-patients-with-chronic-kidney-disease-and-in-the-elderly-patients
#3
REVIEW
Mauro Molteni, Mario Bo, Giovanni Di Minno, Giuseppe Di Pasquale, Simonetta Genovesi, Danilo Toni, Paolo Verdecchia
Dabigatran etexilate (DE) is a direct thrombin inhibitor, which has been approved for the treatment of non-valvular atrial fibrillation (AF), and for the prevention and treatment of venous thromboembolism (VTE). Despite large randomized clinical trials and independent observational studies providing robust data concerning DE safety and efficacy, some physicians still perceive mild-to-moderate renal impairment and old age as a relative contraindication to its use. In this article, we review the available scientific evidence supporting the use of DE in these clinical situations...
April 24, 2017: Internal and Emergency Medicine
https://www.readbyqxmd.com/read/28439618/-radiofrequency-current-or-cryoballoon-for-ablation-of-atrial-fibrillation-hot-or-cold
#4
B Reissmann, K-H Kuck, A Metzner
Atrial fibrillation (AF) is the most common form of cardiac arrhythmia. The aim of therapy in symptomatic patients is the establishment of a stable sinus rhythm (SR). Catheter ablation with isolation of the pulmonary veins is the essential component of all forms of ablation therapy and provides the most effective treatment option. The most frequently used technologies for pulmonary vein isolation (PVI) are radiofrequency current (RFC)-based and cryoballoon (CB)-guided ablation. Irrespective of the simplification of PVI, CB ablation is characterized by a short learning curve and short procedural times and demonstrated non-inferiority with respect to safety and efficacy when directly compared to RFC ablation for the treatment of patients with paroxysmal AF; however, the clinical outcome in patients with persistent AF is often insufficient when performing pulmonary vein isolation (PVI) alone for stabilization of SR...
April 24, 2017: Herz
https://www.readbyqxmd.com/read/28439617/-stroke-prophylaxis-in-atrial-fibrillation-when-how-and-for-whom
#5
T Maurer, C Sohns
In patients suffering from atrial fibrillation (AF), modern antithrombotic therapy and anticoagulation strategies should be individualized based on shared decision making including patient preferences and the absolute and relative risks of stroke and bleeding. Estimation of the individual risk for stroke is still based on the CHA2DS2-VASc score. Based on the most recent guidelines for the management of AF, oral anticoagulation therapy should be considered for men with a CHA2DS2-VASc score ≥1 and women with a score ≥2, balancing the expected stroke reduction, risk of bleeding and patient preference...
April 24, 2017: Herz
https://www.readbyqxmd.com/read/28438723/long-term-outcomes-of-minimally-invasive-surgical-ablation-for-atrial-fibrillation-a-single-center-experience
#6
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 AF ablation delivers RF energy via a thoracoscopic approach to perform pulmonary vein isolation and LA ganglionic plexi ablation. Data on long term outcomes of MISAA is 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 62.7±9.3 years) underwent MISAA with left atrial appendage exclusion by a single surgeon between 2006 and 2012...
April 21, 2017: Heart Rhythm: the Official Journal of the Heart Rhythm Society
https://www.readbyqxmd.com/read/28438722/propagation-of-meandering-rotors-surrounded-by-high-dominant-frequency-areas-in-persistent-atrial-fibrillation
#7
João Salinet, Fernando S Schlindwein, Peter Stafford, Tiago P Almeida, Xin Li, Frederique J Vanheusden, María S Guillem, G André Ng
BACKGROUND: identification of arrhythmogenic regions remains a challenge in persistent atrial fibrillation (persAF). Frequency and phase analysis allows identification of potential ablation targets. OBJECTIVE: This study aims to investigate the spatiotemporal association between dominant frequency (DF) and re-entrant phase activation areas. METHODS: Eight persAF patients undergoing first-time catheter ablation procedure were enrolled. A non-contact array catheter was deployed into the left atrium (LA) and 2048 AF electrograms (AEG) were acquired for 15 seconds following ventricular far-field cancellation...
April 21, 2017: Heart Rhythm: the Official Journal of the Heart Rhythm Society
https://www.readbyqxmd.com/read/28438308/cardiovascular-outcomes-with-surgical-left-atrial-appendage-exclusion-in-patients-with-atrial-fibrillation-who-underwent-valvular-heart-surgery-from-the-national-inpatient-sample-database
#8
Ayman Elbadawi, Odunayo Olorunfemi, Gbolahan O Ogunbayo, Marwan Saad, Islam Y Elgendy, Zainab Arif, Haytham Badran, Deola Saheed, Hamdy M A Ahmed, Mohan Rao
Left atrial appendage (LAA) exclusion is a commonly performed procedure to reduce the embolic events in patients with atrial fibrillation (AF) who underwent cardiac surgeries. Our study aimed to evaluate the in-hospital outcomes of LAA exclusion in patients with AF who underwent valvular heart surgeries. We queried the Nationwide Inpatient Sample Database from 1998 to 2013 for patients with the International Classification of Diseases, Ninth Edition, Clinical Modification, diagnosis codes for AF and underwent any valvular heart surgery...
March 29, 2017: American Journal of Cardiology
https://www.readbyqxmd.com/read/28436566/atrial-fibrillation-originating-from-superior-vena-cava-with-atrial-flutter-electrocardiogram-pattern
#9
Hung-Kai Huang, Shih-Lin Chang, Yenn-Jiang Lin, Li-Wei Lo, Yu-Feng Hu, Fa-Po Chung, Yen-Chang Huang, Chung-Hsing Lin, Chao-Shun Chan, Hung-Yu Chang, Chin-Yu Lin, Yao-Ting Chang, Ching-Hui Huang, Shih-Ann Chen
BACKGROUNDS: Substrate property is related to the genesis and maintenance of atrial fibrillation (AF). The aim of the study was to investigate the impact of substrate property on the electrocardiogram (ECG) in patients with AF originating from the superior vena cava (SVC). METHODS AND RESULTS: Seventy-six patients with AF originating from SVC underwent catheter ablation were included from 2004 to 2013. Of these patients, 16 had a presentation of atrial flutter (AFL)-pattern ECG during AF (group 1), and 60 patients did not (group 2)...
April 24, 2017: Pacing and Clinical Electrophysiology: PACE
https://www.readbyqxmd.com/read/28434746/supplementing-an-immunomodulatory-feed-ingredient-to-modulate-thermoregulation-physiologic-and-production-responses-in-lactating-dairy-cows-under-heat-stress-conditions
#10
T Leiva, R F Cooke, A P Brandão, K M Schubach, L F D Batista, M F Miranda, E A Colombo, R O Rodrigues, J R G Junior, R L A Cerri, J L M Vasconcelos
This study compared vaginal temperature, physiologic, and productive parameters in lactating dairy cows supplemented or not with Omnigen-AF (Phibro Animal Health, Teaneck, NJ) during the summer months in a tropical environment. Thirty-two lactating, primiparous (n = 16) and multiparous (n = 16) pregnant Holstein × Gir cows were ranked by parity, days in milk, body weight, and body condition score (BCS), and assigned to receive (SUPP; n = 16) or not (CON; n = 16) Omnigen-AF (Phibro Animal Health, Teaneck, NJ) at 56 g/cow daily (as-fed basis)...
April 20, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28434446/revisiting-pulmonary-vein-isolation-alone-for-persistent-atrial-fibrillation-a-systematic-review-and-meta-analysis
#11
Aleksandr Voskoboinik, Jeremy T Moskovitch, Nadav Harel, Prashanthan Sanders, Peter M Kistler, Jonathan M Kalman
BACKGROUND: Early studies demonstrated relatively low success rates for pulmonary vein isolation (PVI) alone in patients with persistent atrial fibrillation (PeAF). However, the advent of new technologies and the observation that additional substrate ablation does not improve outcomes have created a new focus on PVI alone for treatment of PeAF. OBJECTIVE: The purpose of this study was to systematically review the recent medical literature to determine current medium-term outcomes when a PVI-only approach is used for PeAF...
May 2017: Heart Rhythm: the Official Journal of the Heart Rhythm Society
https://www.readbyqxmd.com/read/28433958/feasibility-and-safety-of-vitamin-k-antagonist-monotherapy-in-atrial-fibrillation-patients-undergoing-transcatheter-aortic-valve-implantation
#12
Nicolas A Geis, Christina Kiriakou, Emmanuel Chorianopoulos, Sven T Pleger, Hugo A Katus, Raffi Bekeredjian
AIMS: We aimed to assess the efficacy and safety of vitamin K antagonist (VKA) monotherapy in atrial fibrillation (AF) patients undergoing transcatheter aortic valve implantation (TAVI). METHODS AND RESULTS: In 735 TAVIs since 2008 we identified 167 patients suffering from concomitant AF who received either VKA monotherapy (n=77), VKA plus single antiplatelet therapy (SAPT, n=41) or a triple anticoagulation regimen (n=49). Thromboembolic as well as bleeding complications were analysed for six months after TAVI...
April 20, 2017: EuroIntervention
https://www.readbyqxmd.com/read/28433710/down-regulation-of-islet-amyloid-polypeptide-expression-induces-death-of-human-annulus-fibrosus-cells-via-mitochondrial-and-death-receptor-pathways
#13
Xinghuo Wu, Kun Wang, Wenbin Hua, Shuai Li, Xianzhe Liu, Wei Liu, Yu Song, Yukun Zhang, Zengwu Shao, Cao Yang
Islet amyloid polypeptide (IAPP) exerts its biological effects by participating in the regulation of glucose metabolism and cell apoptosis. The main goal of the present study was to investigate the expression of IAPP in degenerated intervertebral disc tissue and IAPP's modulation of extracellular matrix (ECM) catabolic and anabolic genes in human AF cells. We found that the expression of IAPP, the calcitonin receptor, and receptor activity modifying protein decreased considerably in AF cells during the progression of intervertebral disc degeneration (IDD)...
April 19, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28433558/spatial-relationship-of-organized-rotational-and-focal-sources-in-human-atrial-fibrillation-to-autonomic-ganglionated-plexi
#14
Tina Baykaner, Theodoros A Zografos, Junaid A B Zaman, Ioannis Pantos, Mahmood Alhusseini, Rachita Navara, David E Krummen, Sanjiv M Narayan, Demosthenes G Katritsis
BACKGROUND: One approach to improve ablation for atrial fibrillation (AF) is to focus on physiological targets including focal or rotational sources or ganglionic plexi (GP). However, the spatial relationship between these potential mechanisms has never been studied. We tested the hypothesis that rotors and focal sources for AF may co-localize with ganglionated plexi (GP). METHODS: We prospectively identified locations of AF rotors and focal sources, and correlated these to GP sites in 97 consecutive patients (age 59...
April 19, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/28433244/reliability-in-cerebellar-size-assessment-by-2d-cranial-ultrasonography-in-neonates
#15
María Carmen Bravo, Eva Valverde
BACKGROUND: Cerebellar size appears to be correlated with the long-term outcome of preterm infants. Two-dimensional cranial ultrasonography (2D-cUS) is the first-line, routine tool to characterize newborn cerebral structures. Information regarding the accuracy of 2D-cUS for assessing cerebellar size is scarce. OBJECTIVES: To assess the reliability of cerebellar size using 2D-cUS. METHODS: Fifty infants were prospectively scanned for a variety of clinical indications...
April 7, 2017: European Journal of Paediatric Neurology: EJPN
https://www.readbyqxmd.com/read/28433223/risk-of-intraatrial-thrombi-after-thoracoscopic-ablation-in-absence-of-heparin-and-appendage-closure
#16
Petr Budera, Pavel Osmancik, Dalibor Herman, David Talavera, Robert Petr, Zbynek Straka
BACKGROUND: Catheter and surgical ablation of atrial fibrillation (AF) can be associated with a risk of thromboembolic events. The goal of this study was to assess optimal anticoagulation management during thoracoscopic ablation of AF. METHODS: Fifty-two patients with persistent or long-standing persistent AF underwent hybrid ablation consisting of thoracoscopic ablation followed by electrophysiologic (EP) evaluation and consecutive ablation if indicated. The thoracoscopic ablation was performed using three different anticoagulation protocols: (1) without periprocedural heparin and without occlusion of the left atrial appendage; (2) with periprocedural heparin but without left atrial appendage occlusion; and (3) with periprocedural heparin and left atrial appendage occlusion...
April 19, 2017: Annals of Thoracic Surgery
https://www.readbyqxmd.com/read/28433206/efficacy-and-safety-of-rivaroxaban-versus-warfarin-in-patients-from-mainland-china-with-nonvalvular-atrial-fibrillation-a-subgroup-analysis-from-the-rocket-af-trial
#17
Yihong Sun, Dayi Hu, Susanna Stevens, Yuliya Lokhnygina, Richard C Becker, Scott D Berkowitz, Günter Breithardt, Werner Hacke, Jonathan L Halperin, Graeme J Hankey, Kenneth W Mahaffey, Christopher C Nessel, Jonathan P Piccini, Daniel E Singer, Keith A A Fox, Manesh R Patel
BACKGROUND: The ROCKET AF study evaluated once-daily rivaroxaban versus dose-adjusted warfarin for the prevention of stroke and systemic embolism in patients with atrial fibrillation (AF). In this analysis, we compared rivaroxaban with warfarin in patients with AF from China, East Asia, and the rest of the world (ROW). METHODS AND RESULTS: We assessed baseline demographics and interaction of treatment effects of rivaroxaban versus warfarin among patients from mainland China, other East Asian countries, and ROW...
April 13, 2017: Thrombosis Research
https://www.readbyqxmd.com/read/28432810/liver-cirrhosis-is-a-risk-factor-for-atrial-fibrillation-a-nationwide-population-based-study
#18
HyunJung Lee, Eue-Keun Choi, Tae-Min Rhee, So-Ryoung Lee, Woo-Hyun Lim, Si-Hyuck Kang, Kyung-Do Han, Myung-Jin Cha, Seil Oh
BACKGROUND & AIMS: Information is lacking regarding whether liver cirrhosis (LC) is associated with atrial fibrillation (AF) development. We aimed to investigate the incidence and clinical significance of AF in cirrhotic patients. METHODS: LC patients (n = 3,596; mean age, 54.7 ± 12.3 years; male, 72.5%) without previous AF were selected from the Korean National Health Insurance Service National Sample Cohort database between 2004 and 2008. Age- and sex-matched controls (n=17,980) were randomly sampled in a 5:1 ratio from non-LC individuals...
April 22, 2017: Liver International: Official Journal of the International Association for the Study of the Liver
https://www.readbyqxmd.com/read/28432712/stroke-etiology-and-collaterals-atheroembolic-strokes-have-greater-collateral-recruitment-than-cardioembolic-strokes
#19
L C Rebello, M Bouslama, D C Haussen, J A Grossberg, S Dehkharghani, A Anderson, S R Belagaje, N A Bianchi, M Grigoryan, M R Frankel, R G Nogueira
BACKGROUND AND PURPOSE: Chronic hypoperfusion from athero-stenotic lesions is thought to lead to better collateral recruitment compared to cardioembolic strokes. It was sought to compare collateral flow in stroke patients with atrial fibrillation (AF) versus stroke patients with cervical atherosclerotic steno-occlusive disease (CASOD). METHOD: This was a retrospective review of a prospectively collected endovascular database. Patients with (i) anterior circulation large vessel occlusion stroke, (ii) pre-treatment computed tomography angiography (CTA) and (iii) intracranial embolism from AF or CASOD were included...
April 21, 2017: European Journal of Neurology: the Official Journal of the European Federation of Neurological Societies
https://www.readbyqxmd.com/read/28432528/conventional-acupuncture-for-cardiac-arrhythmia-a-systematic-review-of-randomized-controlled-trials
#20
Jing Liu, Si-Nai Li, Lu Liu, Kun Zhou, Yan Li, Xiao-Yun Cui, Jie Wan, Jin-Jin Lu, Yan-Chao Huang, Xu-Sheng Wang, Qian Lin
OBJECTIVE: To exam the effect and safety of conventional acupuncture (CA) on cardiac arrhythmia. METHODS: Nine medical databases were searched until February 2016 for randomized controlled trials. Heterogeneity was measured by Cochran Q test. Meta-analysis was conducted if I(2) was less than 85% and the characteristics of included trials were similar. RESULTS: Nine qualified studies involving 638 patients were included. Only 1 study had definitely low risk of bias, while 7 trials were rated as unclear and 1 as high...
April 22, 2017: Chinese Journal of Integrative Medicine
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