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https://www.readbyqxmd.com/read/27923791/reduced-density-and-altered-regulation-of-rat-atrial-l-type-ca2-current-in-rat-heart-failure
#1
Richard C Bond, Simon M Bryant, Judy J Watson, Jules C Hancox, Clive H Orchard, Andrew F James
Atrial L-type Ca(2+) current (ICaL) downregulation in heart failure contributes to the pathogenesis of atrial fibrillation and is proposed to involve reduction in channel phosphorylation by PKA. The regulation of atrial ICaL was examined in heart failure. Anesthetized adult male Wistar rats underwent surgical coronary artery ligation (CAL, N=10) or equivalent sham-operation (Sham, N=12). Left atrial myocytes were isolated ~18 weeks post-surgery and whole-cell currents recorded (holding potential=-80 mV). ICaL activated by depolarizing pulses to voltages from -40 to +50 mV were normalized to cell capacitance and current density-voltage relations plotted...
December 6, 2016: American Journal of Physiology. Heart and Circulatory Physiology
https://www.readbyqxmd.com/read/27921167/the-real-world-in-the-clinic-before-and-after-the-establishment-of-guidelines-for-coronary-artery-spasm-a-questionnaire-for-members-of-the-japanese-cine-angio-association
#2
Shozo Sueda, Hiroaki Kohno, Hideaki Yoshino
We investigated the clinical situations and the present knowledge of Japanese cardiologists about coronary artery spasm before and after the establishment of guidelines for this condition in the real world. A questionnaire was developed regarding the number of cases of coronary angiography, percutaneous coronary intervention, and invasive/non-invasive spasm provocation tests before (2008) and after (2014) the establishment of the Japanese Circulation Society (JCS) guidelines for coronary artery spasm and the status of spasm provocation tests...
December 5, 2016: Heart and Vessels
https://www.readbyqxmd.com/read/27918494/associations-between-neutrophil-gelatinase-associated-lipocalin-neutrophil-to-lymphocyte-ratio-atrial-fibrillation-and-renal-dysfunction-in-chronic-heart-failure
#3
Onur Argan, Dilek Ural, Guliz Kozdag, Tayfun Sahin, Serdar Bozyel, Mujdat Aktas, Kurtulus Karauzum, Irem Yilmaz, Emir Dervis, Aysen Agir
BACKGROUND Atrial fibrillation (AF) and renal dysfunction are two common comorbidities in patients with chronic heart failure with reduced ejection fraction (HFrEF). This study evaluated the effect of permanent AF on renal function in HFrEF and investigated the associations of atrial fibrillation, neutrophil gelatinase-associated lipocalin (NGAL), and neutrophil-to-lymphocyte ratio (NLR) with adverse clinical outcome. MATERIAL AND METHODS Serum NGAL levels measured by ELISA and NLR were compared between patients with sinus rhythm (HFrEF-SR, n=68), with permanent AF (HFrEF-AF, n=62), and a healthy control group (n=50)...
December 5, 2016: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/27917715/antiplatelet-agents-and-anticoagulants-in-patients-with-chronic-kidney-disease-from-pathophysiology-to-clinical-practice
#4
Jens Lutz, Kerstin Jurk
Progressive impairment of renal function can lead to uremia, which is associated with thus increasing the risk of bleeding as well as thrombosis. Furthermore, many patients with chronic kidney disease (CKD) have an indication for an anticoagulation or antiplatelet therapy due to atrial fibrillation, coronary artery disease, thromboembolic disease, or peripheral artery disease. The treatment usually includes vitamin-K antagonists (VKAs) and/or platelet aggregation inhibitors. The direct oral anticoagulants (DOACs) inhibiting factor Xa or thrombin activity represent an alternative for heparins and VKAs...
December 5, 2016: Current Pharmaceutical Design
https://www.readbyqxmd.com/read/27915215/cha2ds2-vasc-hsf-score-new-predictor-of-severity-of-coronary-artery-disease-in-2976-patients
#5
Ranjan Modi, S V Patted, P C Halkati, Sanjay Porwal, Sameer Ambar, Prasad Mr, Vijay Metgudmath, Ameet Sattur
BACKGROUND: CHADS2 and CHA2DS2-VASc scores have been used for assessing prognostic risk of thromboembolism in non valvular atrial fibrillation patients. They include similar risk factors for the development of CAD To increase the likelihood of determining CAD severity, the CHA2DS2-VASc-HS and CHA2DS2-VASc-HSF score comprising of hyperlipidemia, smoking and family history respectively in addition to the components of the CHA2DS2-VASc score and male instead of female gender. The aim was to investigate whether these risk scores can be used to predict CAD severity...
October 29, 2016: International Journal of Cardiology
https://www.readbyqxmd.com/read/27914836/perioperative-retinal-artery-occlusion-risk-factors-in-cardiac-surgery-from-the-united-states-national-inpatient-sample-1998-2013
#6
Tyler Calway, Daniel S Rubin, Heather E Moss, Charlotte E Joslin, Katharina Beckmann, Steven Roth
PURPOSE: To study the incidence and risk factors for retinal artery occlusion (RAO) in cardiac surgery. DESIGN: Retrospective study using the National Inpatient Sample (NIS). METHODS: The NIS was searched for cardiac surgery. Retinal artery occlusion was identified by International Classification of Diseases, Ninth Revision, Clinical Modification (ICD-9-CM) codes. Postulated risk factors based on literature review were included in multivariate logistic models...
November 30, 2016: Ophthalmology
https://www.readbyqxmd.com/read/27914496/computed-tomography-derived-skeletal-muscle-index-a-novel-predictor-of-frailty-and-hospital-length-of-stay-after-transcatheter-aortic-valve-replacement
#7
Vishal Dahya, Jingjie Xiao, Carla M Prado, Penny Burroughs, Dan McGee, Aline C Silva, Julian E Hurt, Shafi G Mohamed, Thomas Noel, Wayne Batchelor
: To determine the prevalence of low skeletal muscle mass in patients undergoing transcatheter aortic valve replacement (TAVR) and whether skeletal muscle mass measured from preoperative computed tomography (CT) images provides value in predicting postoperative length of stay (LOS). BACKGROUND: There are limited data on the use of body composition as a frailty measure in TAVR patients and no studies have determined if this measure predicts LOS. METHODS: We studied 104 consecutive patients who underwent TAVR at Tallahassee Memorial Hospital from 2012 to 2016...
December 2016: American Heart Journal
https://www.readbyqxmd.com/read/27914493/patient-factors-associated-with-quality-of-life-in-atrial-fibrillation
#8
Tiffany C Randolph, DaJuanicia N Simon, Laine Thomas, Larry A Allen, Gregg C Fonarow, Bernard J Gersh, Peter R Kowey, James A Reiffel, Gerald V Naccarelli, Paul S Chan, John A Spertus, Eric D Peterson, Jonathan P Piccini
BACKGROUND: As treatment options for atrial fibrillation (AF) increase, more attention is focused on patients' experiences and quality of life (QoL). However, little is known about the factors associated with these outcomes. METHODS: The Atrial Fibrillation Effect on QualiTy-of-life (AFEQT) is a disease-specific QoL tool for AF, with domain and summary scores ranging from 0 (the worst QoL) to 100. Using multivariable linear regression, we evaluated factors associated with baseline AFEQT Summary and Subscale Scores in ORBIT AF, a large, community-based AF registry...
December 2016: American Heart Journal
https://www.readbyqxmd.com/read/27914358/defining-the-role-of-perioperative-statin-treatment-in-patients-after-cardiac-surgery-a-meta-analysis-and-systematic-review-of-20-randomized-controlled-trials
#9
Xin Yuan, Jianlin Du, Qi Liu, Ling Zhang
BACKGROUND: Although statin use has been indicated to prevent atrial fibrillation in previous observational and experimental trials, the issue remains inadequately and insufficiently explored. We therefore performed this meta-analysis to evaluate the effects of perioperative statin therapy on complications and short-term prognosis following cardiac surgery. METHODS: A search of the PubMed, EMBASE and the Cochrane database of controlled trials was performed from inception to June 2016 to identify relevant randomized controlled trials (RCTs)...
November 9, 2016: International Journal of Cardiology
https://www.readbyqxmd.com/read/27914211/micrornas-in-cardiovascular-disease-clinical-application
#10
Christian Schulte, Mahir Karakas, Tanja Zeller
microRNAs (miRNAs) are well-known, powerful regulators of gene expression, and their potential to serve as circulating biomarkers is widely accepted. In cardiovascular disease (CVD), numerous studies have suggested miRNAs as strong circulating biomarkers with high diagnostic as well as prognostic power. In coronary artery disease (CAD) and heart failure (HF), miRNAs have been suggested as reliable biomarkers matching up to established protein-based such as cardiac troponins (cT) or natriuretic peptides. Also, in other CVD entities, miRNAs were identified as surprisingly specific biomarkers - with great potential for clinical applicability, especially in those entities that lack specific protein-based biomarkers such as atrial fibrillation (AF) and acute pulmonary embolism (APE)...
December 3, 2016: Clinical Chemistry and Laboratory Medicine: CCLM
https://www.readbyqxmd.com/read/27912198/usefulness-of-chads2-score-for-prognostic-stratification-of-patients-with-coronary-artery-disease-a-systematic-review-and-meta-analysis-of-cohort-studies
#11
Xiaobo Zhou, Kaiwu Cao, Shuangqing Kou, Shencheng Qu, Hongling Li, Ying Yu, Cong Wang, Yu Liu, Pengying Li, Dan Li
OBJECTIVE: To evaluate the role of CHADS2 score on predicting ischaemic stroke or transient ischaemic attack (TIA) and death in patients with coronary artery disease (CAD), irrespective of the presence or absence of atrial fibrillation (AF). METHODS: We searched for cohort studies that reported risk estimates for incidence of ischaemic stroke/TIA or mortality by levels of CHADS2 score in Medline/PubMed and Embase. Random effects models were used to calculate pooled risk ratios (RRs) and 95% confidence intervals (CIs)...
November 9, 2016: International Journal of Cardiology
https://www.readbyqxmd.com/read/27909490/effects-of-atrial-fibrillation-cardioversion-after-percutaneous-mitral-balloon-valvuloplasty-on-echocardiographic-left-and-right-atrial-functions
#12
Ayman Morttada Md, Aly Ramzy Md, Said Khaled Md, Amal Ayoub Md, Sameh Samir Md, Hossam Zaki Md
Amongst patients with mitral stenosis (MS), the most common complication is AF.Our study aimed at evaluating the effect of AF cardioversion after Percutaneous Mitral Balloon Valvuloplasty (PMBV) on echocardiographic atrial functions. The study included 34 patients with MS and AF, presenting to Ain-shams University hospitals, who underwent successful PMBV then randomized into 2 different groups according to AF management strategy. Group-I patients (n=16) received DC cardioversion after amiodarone infusion (within 24 hours post-PMBV) in addition to anticoagulation...
April 2016: Journal of Atrial Fibrillation
https://www.readbyqxmd.com/read/27907904/a-new-cryoenergy-for-ventricular-tachycardia-ablation-a-proof-of-concept-study
#13
Benjamin Berte, Frédéric Sacher, Jean-Yves Wielandts, Saagar Mahida, Xavier Pillois, Rukshen Weerasooriya, Olivier Bernus, Pierre Jaïs
INTRODUCTION: Lack of transmural lesion formation during radiofrequency (RF) ablation for ventricular tachycardia (VT) is an important determinant of arrhythmia recurrence. The aim of this proof-of-concept study was to evaluate safety and efficacy of a new and more powerful cryoablation system for ventricular ablation. METHODS AND RESULTS: Five healthy female sheep (59 ± 6 kg) underwent a surgical sternotomy for epicardial and endocardial access [endocardial access via right atrial appendage and left ventricular (LV) apex]...
October 25, 2016: Europace: European Pacing, Arrhythmias, and Cardiac Electrophysiology
https://www.readbyqxmd.com/read/27906419/sch-79797-a-selective-par1-antagonist-protects-against-ischemia-reperfusion-induced-arrhythmias-in-the-rat-hearts
#14
O Y Mohamed, A A Al-Masri, E A El Eter, R Lateef
OBJECTIVE: Thrombin is implicated in the genesis of arrhythmias and activation of thrombin receptors exacerbated ventricular arrhythmias following coronary artery ligation. The present study was designed to investigate the possible protective effect of the protease-activated receptor-1 antagonist, SCH79797 against ischemia and reperfusion arrhythmias in the rat heart. MATERIALS AND METHODS: Healthy male Wistar rats (250-350 g) were anesthetized with urethane. Coronary artery ligation was performed for 5 minutes followed by 10 minutes reperfusion...
November 2016: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/27906091/impact-of-prophylactic-administration-of-levosimendan-on-short-term-and-long-term-outcome-in-high-risk-patients-with-severely-reduced-left-ventricular-ejection-fraction-undergoing-cardiac-surgery-a-retrospective-analysis
#15
Philippe Grieshaber, Stella Lipp, Andreas Arnold, Gerold Görlach, Matthias Wollbrück, Peter Roth, Bernd Niemann, Jochen Wilhelm, Andreas Böning
BACKGROUND: Patients with severely reduced left-ventricular ejection fraction carry a high risk of morbidity and mortality after cardiac surgery. Levosimendan can be used prophylactically in these patients having shown positive effects on short-term outcome. However, effects on long-term outcome and patient subgroups benefiting the most are unknown. We aim to address these topics with real-life data from our clinical practice. METHODS: Two hundred eigthy eight patients with preoperative LVEF ≤ 35% underwent cardiac surgery with cardiopulmonary bypass between 2009 and 2013...
December 1, 2016: Journal of Cardiothoracic Surgery
https://www.readbyqxmd.com/read/27903864/oral-thrombin-inhibitor-aggravates-platelet-adhesion-and-aggregation-during-arterial-thrombosis
#16
Tobias Petzold, Manuela Thienel, Ildiko Konrad, Irene Schubert, Ron Regenauer, Boj Hoppe, Michael Lorenz, Annekathrin Eckart, Sue Chandraratne, Carsten Lennerz, Christof Kolb, Daniel Braun, Janina Jamasbi, Richard Brandl, Siegmund Braun, Wolfgang Siess, Christian Schulz, Steffen Massberg
In patients with atrial fibrillation, oral anticoagulation with oral thrombin inhibitors (OTIs), in contrast to vitamin K antagonists (VKAs), associates with a modest increase in acute coronary syndromes (ACSs). Whether this observation is causatively linked to OTI treatment and, if so, whether OTI action is the result of a lower antithrombotic efficacy of OTI compared to VKA or reflects a yet undefined prothrombotic activity of OTI remain unclear. We analyzed platelet function in patients receiving OTI or dose-adapted VKA under static and flow conditions...
November 30, 2016: Science Translational Medicine
https://www.readbyqxmd.com/read/27903475/technical-aspects-of-open-repair-for-degenerative-aneurysmal-evolution-despite-early-thoracic-endovascular-repair-of-type-b-aortic-dissection
#17
Sonia Aguir, Salma El Batti, Paul Achouh, Pierre Julia, Alain Bel, Jean-Noël Fabiani, Jean-Marc Alsac
: Closure of the proximal tear by Thoracic Endovascular Aortic Repair (TEVAR) at the acute phase appears to be an safe effective treatment to prevent aneurysmal degeneration type B dissection. However, it appears to be inefficient in up to a third of the patient. We report the technical aspects of our experience with patients undergoing secondary open repair after TEVAR for dissecting thoraco-abdominal aneurysm despite early closure proximal tear by TEVAR. METHODS: During a period of 5 years, 96 patients presenting acute Type B Aortic Dissections (TBAD) were treated by TEVAR and followed-up in our institution...
November 26, 2016: Annals of Vascular Surgery
https://www.readbyqxmd.com/read/27902730/spectrum-of-cerebrovascular-disease-in-patients-with-multiple-myeloma-undergoing-chemotherapy-results-of-a-case-control-study
#18
Archana Hinduja, Kaustubh Limaye, Rahul Ravilla, Appalnaidu Sasapu, Xenofon Papanikolaou, Lai Wei, Michel Torbey, Sarah Waheed
OBJECTIVES: Patients with multiple myeloma (MM) are at increased risk of arterial thrombosis. Our aim was to determine the risk factors, mechanisms and outcome of strokes in these patients. METHODS: We conducted a retrospective matched case-control study from our database of MM patients enrolled in Total Therapy (TT) 2, TT3a and TT3b protocols who developed a vascular event (transient ischemic attack, ischemic stroke, or intracerebral hemorrhage) from October 1998 to January 2014...
2016: PloS One
https://www.readbyqxmd.com/read/27899944/epidemiology-and-genetics-of-ventricular-fibrillation-during-acute-myocardial-infarction
#19
REVIEW
Charlotte Glinge, Stefan Sattler, Reza Jabbari, Jacob Tfelt-Hansen
Sudden cardiac death (SCD) from ventricular fibrillation (VF) during coronary artery disease (CAD) is a leading cause of total and cardiovascular mortality, and in more than half of SCD cases VF occurs as the first symptom of CAD. Several epidemiological studies have shown that sudden death of a family member is a risk factor for SCD and VF during acute myocardial infarction (MI), independent of traditional risk factors including family history of MI, suggesting a genetic component in the susceptibility to VF...
September 2016: Journal of Geriatric Cardiology: JGC
https://www.readbyqxmd.com/read/27897305/-cervical-ischaemic-neuronopathy-and-cardioembolism-another-cause-of-man-in-the-barrel-syndrome
#20
H Gonzalez-Usigli, A Gandarilla, J J Garcia, J Serrato, N Estrada
INTRODUCTION: Spinal infarction accounts for 1% of all strokes. Cardioembolism is a rare cause. Common areas of ischemic spinal damage are watershed in the dorsal or lumbar regions; however cervical spinal cord infarction has been reported previously. CASE REPORT: We present a new case of a man-in-the-barrel syndrome produced by cardiac embolization associated with atrial fibrillation during an acute myocardial infarction, which caused cervical ischemic neuronopathy (infarction of the anterior horn)...
December 16, 2016: Revista de Neurologia
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