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Atrial fibrillation and obesity

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https://www.readbyqxmd.com/read/28919580/concomitant-obesity-and-metabolic-syndrome-add-to-the-atrial-arrhythmogenic-phenotype-in-male-hypertensive-rats
#1
Mathias Hohl, Dennis H Lau, Andreas Müller, Adrian D Elliott, Benedikt Linz, Rajiv Mahajan, Jeroen M L Hendriks, Michael Böhm, Ulrich Schotten, Prashanthan Sanders, Dominik Linz
BACKGROUND: Besides hypertension, obesity and the metabolic syndrome have recently emerged as risk factors for atrial fibrillation. This study sought to delineate the development of an arrhythmogenic substrate for atrial fibrillation in hypertension with and without concomitant obesity and metabolic syndrome. METHODS AND RESULTS: We compared obese spontaneously hypertensive rats (SHR-obese, n=7-10) with lean hypertensive controls (SHR-lean, n=7-10) and normotensive rats (n=7-10)...
September 17, 2017: Journal of the American Heart Association
https://www.readbyqxmd.com/read/28919427/age-dependent-atrial-arrhythmic-phenotype-secondary-to-mitochondrial-dysfunction-in-pgc-1%C3%AE-deficient-murine-hearts
#2
Haseeb Valli, Shiraz Ahmad, Karan Chadda, Ali Al-Hadithi, Andrew A Grace, Kamalan Jeevaratnam, Christopher L-H Huang
INTRODUCTION: Ageing and several age-related chronic conditions including obesity, insulin resistance and hypertension are associated with mitochondrial dysfunction and represent independent risk factors for atrial fibrillation (AF). MATERIALS AND METHODS: Atrial arrhythmogenesis was investigated in Langendorff-perfused young (3-4 month) and aged (>12 month), wild type (WT) and peroxisome proliferator activated receptor-γ coactivator-1β deficient (Pgc-1β(-/-)) murine hearts modeling age-dependent chronic mitochondrial dysfunction during regular pacing and programmed electrical stimulation (PES)...
September 14, 2017: Mechanisms of Ageing and Development
https://www.readbyqxmd.com/read/28911189/long-working-hours-as-a-risk-factor-for-atrial-fibrillation-a-multi-cohort-study
#3
Mika Kivimäki, Solja T Nyberg, G David Batty, Ichiro Kawachi, Markus Jokela, Lars Alfredsson, Jakob B Bjorner, Marianne Borritz, Hermann Burr, Nico Dragano, Eleonor I Fransson, Katriina Heikkilä, Anders Knutsson, Markku Koskenvuo, Meena Kumari, Ida E H Madsen, Martin L Nielsen, Maria Nordin, Tuula Oksanen, Jan H Pejtersen, Jaana Pentti, Reiner Rugulies, Paula Salo, Martin J Shipley, Sakari Suominen, Töres Theorell, Jussi Vahtera, Peter Westerholm, Hugo Westerlund, Andrew Steptoe, Archana Singh-Manoux, Mark Hamer, Jane E Ferrie, Marianna Virtanen, Adam G Tabak
Aims: Studies suggest that people who work long hours are at increased risk of stroke, but the association of long working hours with atrial fibrillation, the most common cardiac arrhythmia and a risk factor for stroke, is unknown. We examined the risk of atrial fibrillation in individuals working long hours (≥55 per week) and those working standard 35-40 h/week. Methods and results: In this prospective multi-cohort study from the Individual-Participant-Data Meta-analysis in Working Populations (IPD-Work) Consortium, the study population was 85 494 working men and women (mean age 43...
September 7, 2017: European Heart Journal
https://www.readbyqxmd.com/read/28900850/assessment-of-atrial-fibrillation-and-ventricular-arrhythmia-risk-after-bariatric-surgery-by-p-wave-qt-interval-dispersion
#4
Mustafa Yılmaz, Cihan Altın, Abdullah Tekin, Tansel Erol, İlker Arer, Tarık Zafer Nursal, Nurkan Törer, Varlık Erol, Haldun Müderrisoğlu
BACKGROUND: The association of obesity with atrial fibrillation (AF) and with ventricular arrhythmias is well documented. OBJECTIVE: The aim of this study was to investigate whether weight reduction by a laparoscopic sleeve gastrectomy has any effect on P wave dispersion (PWD), a predictor of AF, and corrected QT interval dispersion (CQTD), a marker of ventricular arrhythmias, in obese individuals. METHODS: In a prospective study, a total of 114 patients (79 females, 35 males) who underwent laparoscopic sleeve gastrectomy were examined...
September 13, 2017: Obesity Surgery
https://www.readbyqxmd.com/read/28885813/asleep-at-the-wheel-obstructive-sleep-apnea
#5
Richard J Fantus
Left untreated, OSA can lead to hypertension, stroke, congestive heart failure, and atrial fibrillation and s associated with type 2 diabetes and depression.... OSA strikes people of any age, including infants, and is most commonly seen in overweight or obese men older than 40 years of age.
June 2017: Bulletin of the American College of Surgeons
https://www.readbyqxmd.com/read/28882818/prospective-association-of-physical-activity-and-heart-failure-hospitalizations-among-black-adults-with-normal-ejection-fraction-the-jackson-heart-study
#6
Patrick Koo, Annie Gjelsvik, Gaurav Choudhary, Wen-Chih Wu, Wei Wang, F Dennis McCool, Charles B Eaton
BACKGROUND: Given high rates of obesity, hypertension, and diabetes mellitus, black persons are at risk to develop heart failure. The association of moderate to vigorous physical activity (MVPA) and heart failure in black adults is underresearched. The purpose of this study was to explore whether greater MVPA was associated with lower risk of heart failure hospitalizations (HFHs) among black adults with normal ejection fractions. METHODS AND RESULTS: We performed a prospective analysis of 4066 black adults who participated in the Jackson Heart Study and who had physical activity measured, had normal ejection fraction on 2-dimensional echocardiograms, and were followed for 7 years for incident HFH...
September 7, 2017: Journal of the American Heart Association
https://www.readbyqxmd.com/read/28876595/acute-upper-limb-ischaemia-in-diabetic-patients-a-recent-experience
#7
R du Toit, A T O Abdool-Carrim, T Monareng
BACKGROUND: The outcome of acute upper limb ischaemia in diabetic patients is not well known. We report our recent experience with 5 patients. METHOD: Retrospective case reviews. RESULTS: All patients presented with Rutherford 2b ischaemia at a median 1.6 days after symptom onset. Age range: 43-76 years. M:F 1:4. Mean HbA1c: 10.1% (range 6.1 - 14.0) Mean LDL cholesterol: 3.1g/dL (range 1.61 - 4.80) Other comorbidities included: Ischaemic heart disease, atrial fibrillation, dyslipidaemia, hypertension, morbid obesity...
September 2017: South African Journal of Surgery. Suid-Afrikaanse Tydskrif Vir Chirurgie
https://www.readbyqxmd.com/read/28864160/incidence-and-outcomes-of-heparin-induced-thrombocytopenia-in-patients-undergoing-vascular-surgery
#8
Rabail Chaudhry, Robert Wegner, John F Zaki, Greesha Pednekar, Alex Tse, Naveen Kukreja, Navneet Grewal, George W Williams
OBJECTIVE: The National Inpatient Sample (NIS) from years 2010 through 2012 was utilized to determine the incidence, predictive risk factors, and outcomes of heparin-induced thrombocytopenia (HIT) in patients undergoing vascular surgery. DESIGN: Retrospective population-based study. SETTING: Data from the National Inpatient Sample (NIS) (2011 through 2013) using specific International Classification of Diseases, 9th Revision, Clinical Modification (ICD-9-CM) procedure codes corresponding with vascular surgery...
May 17, 2017: Journal of Cardiothoracic and Vascular Anesthesia
https://www.readbyqxmd.com/read/28845957/sleep-disorders-sleep-related-breathing-disorders
#9
Deepa Burman
Sleep-related breathing disorders or sleep-disordered breathing are characterized by abnormal respiration during sleep. They are grouped into obstructive sleep apnea (OSA), central sleep apnea, sleep-related hypoventilation, and sleep-related hypoxemia disorder. OSA is a common disorder encountered in the family medicine setting that is increasingly being recognized because of the obesity epidemic and greater public and physician awareness. OSA is characterized by recurrent episodes of partial or complete closure of the upper airway resulting in disturbed breathing during sleep...
September 2017: FP Essentials
https://www.readbyqxmd.com/read/28828325/evaluation-of-death-among-the-patients-undergoing-permanent-pacemaker-implantation-a-competing-risks-analysis
#10
Haleh Ghaem, Mohammad Ghorbani, Samira Zare Dorniani
BACKGROUND: Permanent artificial pacemaker is one of the important therapies for treatment of cardiac conduction system problems. The present study aimed to determine the association between some predictive variables and all-cause and cause-specific mortality in the patients who had undergone pacemaker implantation. METHODS: This study was conducted on 1207 patients who had undergone permanent pacemaker implantation in the hospitals affiliated with Shiraz University of Medical Sciences, Iran, from Mar 2002 to Mar 2012...
June 2017: Iranian Journal of Public Health
https://www.readbyqxmd.com/read/28822806/pericardial-adipose-and-aromatase-a-new-translational-target-for-aging-obesity-and-arrhythmogenesis
#11
Gabriel B Bernasochi, Wah Chin Boon, Claire L Curl, Upasna Varma, Salvatore Pepe, Marianne Tare, Laura J Parry, Evdokia Dimitriadis, Stephen B Harrap, Chrishan J Nalliah, Jonathan M Kalman, Lea M D Delbridge, James R Bell
A correlation exists between the extent of pericardial adipose and atrial fibrillation (AF) risk, though the underlying mechanisms remain unclear. Selected adipose depots express high levels of aromatase, capable of converting androgens to estrogens - no studies have investigated aromatase occurrence/expression regulation in pericardial adipose. The Women's Health Initiative reported that estrogen-only therapy in women elevated AF incidence, indicating augmented estrogenic influence may exacerbate cardiac vulnerability...
October 2017: Journal of Molecular and Cellular Cardiology
https://www.readbyqxmd.com/read/28818746/patients-with-atrial-fibrillation-and-coronary-artery-disease-double-trouble
#12
REVIEW
Ewelina Michniewicz, Elżbieta Mlodawska, Paulina Lopatowska, Anna Tomaszuk-Kazberuk, Jolanta Malyszko
Coronary artery disease (CAD) is the most common cardiovascular disease while atrial fibrillation (AF) is the most common cardiac arrhythmia. Both diseases share associated risk factors - hypertension, diabetes mellitus, sleep apnea, obesity and smoking. Moreover, inflammation plays a causative role in both diseases. The prevalence of CAD in patients with AF is from 17% to 46.5% while the prevalence of AF among patients with CAD is low and it is estimated from 0.2% to 5%. AF is a well-established factor of poor short- and long-term prognosis in patients with acute myocardial infarction (AMI) and is associated with a marked increase in overall mortality...
August 14, 2017: Advances in Medical Sciences
https://www.readbyqxmd.com/read/28772028/comparative-accuracy-of-nt-probnp-and-mr-proanp-for-the-diagnosis-of-acute-heart-failure-in-dyspnoeic-patients
#13
Fabrice F Darche, Christian Baumgärtner, Moritz Biener, Matthias Müller-Hennessen, Mehrshad Vafaie, Vitali Koch, Kiril Stoyanov, Rasmus Rivinius, Hugo A Katus, Evangelos Giannitsis
AIMS: To compare the performance of the natriuretic peptides (NPs) NT-proBNP and MR-proANP for the diagnosis of acute heart failure (AHF) in subsets of conditions potentially confounding the interpretation of NPs. METHODS AND RESULTS: We studied 312 patients, presenting to the emergency department with new onset of dyspnoea or worsening of chronic dyspnoea within the last 2 weeks. Performance of NPs for the diagnosis of AHF was tested and compared using C-statistics in the entire cohort and in conditions previously described to confound interpretation of NPs such as older age, renal failure, obesity, atrial fibrillation or paced rhythm, and in the NT-proBNP grey zone...
August 2017: ESC Heart Failure
https://www.readbyqxmd.com/read/28757090/association-between-%C3%AE-glutamyltransferase-level-and-incidence-of-atrial-fibrillation-a-nationwide-population-based-study
#14
So-Ryoung Lee, Eue-Keun Choi, Kyung-Do Han, Myung-Jin Cha, Seil Oh
BACKGROUND: Information on the association between γ-glutamyltransferase (GGT) and the incidence of atrial fibrillation (AF) is scarce. We evaluated the association between GGT and AF incidence, and the interaction between GGT and obesity on developing AF in a large population-based cohort. METHODS: We evaluated 266,550 individuals (mean age, 53±11; men, 48.4%) who underwent the national insurance health checkup between 2004 and 2008. Subjects were categorized in accordance with quartiles of GGT levels (range: Q1, 0-15U/L; Q2, 16-22U/L; Q3, 23-38U/L; Q4, ≥39U/L)...
July 21, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/28743922/prevalence-of-stroke-and-vascular-risk-factors-in-china-a-nationwide-community-based-study
#15
Qi Li, Hao Wu, Wei Yue, Qingqing Dai, Hui Liang, Hetao Bian, Xiaoshuang Xia, Qiuhong Ji, Ying Shen
We aimed to investigate the prevalence of stroke and related vascular risk factors in adult population aged 40 years and older in China. We conducted a prospective cross-sectional survey in nationally representative sample of 207323 individuals from all 31 Chinese provinces in 2013. Data were used to analyze the prevalence of stroke by age, sex, geographical regions and educational level. The age-standardized prevalence of stroke was significantly higher in men than in women in all age groups (P < 0...
July 25, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28734850/progression-and-reversibility-of-stretch-induced-atrial-remodeling-characterization-and-clinical-implications
#16
REVIEW
Shivshankar Thanigaimani, Emma McLennan, Dominik Linz, Rajiv Mahajan, Thomas A Agbaedeng, Geoffrey Lee, Jonathan M Kalman, Prashanthan Sanders, Dennis H Lau
Atrial fibrillation (AF) is the most common sustained arrhythmia and across the developed nations, it contributes to increasing hospitalizations and healthcare burden. Several comorbidities and risk factors including hypertension, heart failure, obstructive sleep apnoea and obesity are known to play an important role in the initiation and perpetuation of AF and atrial stretch or dilatation may play a central mechanistic role. The impact of atrial stretch in the development of AF can vary dependent on the underlying disease...
July 19, 2017: Progress in Biophysics and Molecular Biology
https://www.readbyqxmd.com/read/28734462/effect-of-bariatric-surgery-on-emergency-department-visits-and-hospitalizations-for-atrial-fibrillation
#17
MULTICENTER STUDY
Yuichi J Shimada, Yusuke Tsugawa, Carlos A Camargo, David F M Brown, Kohei Hasegawa
Atrial fibrillation (AF) and obesity are major health problems in the United States. However, little is known about whether bariatric surgery affects AF-related morbidities. This study investigated whether bariatric surgery is associated with short-term and long-term changes in the risk of emergency department (ED) visits or hospitalizations for AF. We performed a self-controlled case series study of obese adults with AF who underwent bariatric surgery by using population-based ED and inpatient databases in California, Florida, and Nebraska from 2005 to 2011...
September 15, 2017: American Journal of Cardiology
https://www.readbyqxmd.com/read/28733051/compliance-in-weight-control-reduces-atrial-fibrillation-worsening-a-retrospective-cohort-study
#18
F Fioravanti, D Brisinda, A R Sorbo, G Lombardi, L La Brocca, R Fenici
BACKGROUND AND AIM: Obesity plays a dominant role in the etiology of atrial fibrillation (AF), and the maintenance of a normal body mass index (BMI) seems to prevent and even reduce the incidence of the arrhythmia's recurrence. We selected 270 patients (pts) to assess whether this therapeutic effect was statistically significant even in Mediterranean patients. METHOD AND RESULTS: In this retrospective cohort study, we analyzed every symptomatic AF relapse during a total follow-up of 657 patient-years...
August 2017: Nutrition, Metabolism, and Cardiovascular Diseases: NMCD
https://www.readbyqxmd.com/read/28691137/effective-use-of-balloon-guide-catheters-in-reducing-incidence-of-mechanical-thrombectomy-related-distal-embolization
#19
Dong Hoon Lee, Jae Hoon Sung, Sang Uk Kim, Ho Jun Yi, Jae Taek Hong, Sang Won Lee
BACKGROUND AND PURPOSE: The clinical benefit of endovascular stroke therapy has been demonstrated in several prospective randomized trials. However, in a relevant percentage of patients, mechanical thrombectomy bears the risk of causing new infarction in initially unaffected vascular territories through thrombus fragmentation and migration of clot debris. The goal of this study was to evaluate the use of the balloon guide catheter (BGC) to effectively achieve flow arrest and thrombus aspiration during the intervention to avoid distal embolization...
July 9, 2017: Acta Neurochirurgica
https://www.readbyqxmd.com/read/28684096/epidemiology-of-atrial-fibrillation-the-australian-and-asia-pacific-perspective
#20
REVIEW
Christopher X Wong, Alex Brown, Hung-Fat Tse, Christine M Albert, Jonathan M Kalman, Thomas H Marwick, Dennis H Lau, Prashanthan Sanders
The epidemic of atrial fibrillation (AF) is increasingly recognised as a growing health problem worldwide. Although epidemiological studies on AF in the Asia-Pacific region are scarce, given the increasing age and size of populations in this region, the burden of AF is expected to be far greater than in North America and Europe. This is not only due to the growing, ageing population but also an increased incidence of risk factors for AF, such as hypertension, obesity, metabolic syndrome and diabetes, in the Asia-Pacific region...
May 24, 2017: Heart, Lung & Circulation
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