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https://www.readbyqxmd.com/read/28535202/clinical-implications-of-hypothermic-ventricular-fibrillation-versus-beating-heart-technique-during-cardiopulmonary-bypass-for-pulmonary-valve-replacement-in-patients-with-repaired-tetralogy-of-fallot
#1
Ji-Hyun Lee, Ji-Eun Lee, Jungho Shin, In-Kyung Song, Hee-Soo Kim, Chong-Sung Kim, Woong-Han Kim, Jin-Tae Kim
OBJECTIVES: This study aimed to compare the effects of hypothermic ventricular fibrillation and beating-heart techniques during cardiopulmonary bypass (CPB) on postoperative outcomes after simple pulmonary valve replacement in patients with repaired tetralogy of Fallot (TOF). METHODS: We retrospectively reviewed the data of 47 patients with repaired tetralogy of Fallot at a single institution, who received pulmonary valve replacement under the ventricular fibrillation or beating-heart technique without cardioplegic cardiac arrest during CPB between January 2005 and April 2015...
May 23, 2017: Interactive Cardiovascular and Thoracic Surgery
https://www.readbyqxmd.com/read/28535166/adult-height-prevalent-coronary-calcium-score-and-incident-cardiovascular-outcomes-in-a-multi-ethnic-cohort
#2
Joseph Yeboah, Michael J Blaha, Erin D Michos, Waqas Qureshi, Michael Miedema, Peter Flueckiger, Carlos J Rodriguez, Moyses Szklo, Alain G Bertoni
We assessed the relationships among adult height, coronary artery calcium (CAC) scores, incident atherosclerotic cardiovascular disease (ASCVD) events, and atrial fibrillation (Afib) in a multi-ethnic cohort. We used race/ethnicity -specific height (dichotomized by median and quartiles) as the predictor variable within the four race/ethnic groups in the Multi-Ethnic Study of Atherosclerosis (N = 6,814). After a mean of 10.2 years of follow-up (2000-2012), 556 ASCVD events (8.2%) and 539 afib events (7.9%) occurred...
May 23, 2017: American Journal of Epidemiology
https://www.readbyqxmd.com/read/28535119/comparison-of-effectiveness-and-safety-of-treatment-with-apixaban-vs-other-oral-anticoagulants-among-elderly-nonvalvular-atrial-fibrillation-patients
#3
Steven Deitelzweig, Xuemei Luo, Kiran Gupta, Jeffrey Trocio, Jack Mardekian, Tammy Curtice, Melissa Lingohr-Smith, Brandy Menges, Jay Lin
OBJECTIVE: To compare the risk of stroke/systemic embolism (S/SE) and major bleeding (MB) of elderly (≥65 years of age) nonvalvular atrial fibrillation (NVAF) patients initiating apixaban vs. rivaroxaban, dabigatran, or warfarin. METHODS: NVAF patients with Medicare Advantage coverage in the US initiating oral anticoagulants (OACs, index event) were identified from the Humana database (1/1/2013-9/30/2015) and grouped into cohorts depending on OAC initiated. Propensity score matching (PSM), 1:1, was conducted among patients treated with apixaban vs...
May 23, 2017: Current Medical Research and Opinion
https://www.readbyqxmd.com/read/28535056/solid-state-nmr-structure-based-inhibitor-design-to-achieve-selective-inhibition-of-the-parallel-in-register-%C3%AE-sheet-versus-antiparallel-iowa-mutant-%C3%AE-amyloid-fibrils
#4
Qinghui Cheng, Wei Qiang
Solid-state nuclear magnetic resonance (ssNMR) spectroscopy has been widely applied to characterize the high-resolution structures of β-amyloid (Aβ) fibrils. While these structures provide crucial molecular insights on the deposition of amyloid plaques in Alzheimer's diseases (AD), ssNMR structures have been rarely used so far as basis for designing inhibitors. It remains a challenge because the ssNMR-based Aβ fibrils structures were usually obtained with sparsely-isotope-labeled peptides with limited experimental constraints, where the structural models, especially the side-chain coordinates showed restricted precision...
May 23, 2017: Journal of Physical Chemistry. B
https://www.readbyqxmd.com/read/28534204/-ventricular-arrhythmias-in-ion-channel-diseases
#5
REVIEW
Christian Wolpert, Mara Vogel, Christian Nagel, Claudia Herrera-Siklody, Norman Rüb
In patients with ion channel disease the predominant arrhythmias are polymorphic ventricular tachycardias (VT), torsade de pointes tachycardia and ventricular fibrillation (VF). In only extremely rare cases is very rapid monomorphic ventricular tachycardia observed. This is why implantable cardioverter-defibrillators (ICDs) should always be programmed for treatment of VF only with high detection rates to avoid inappropriate discharges. In idiopathic VF and catecholaminergic polymorphic ventricular tachycardia (CPVT), no baseline electrocardiographic abnormalities can be detected, whereas in Brugada syndrome, long QT syndrome, early repolarisation syndrome and Anderson-Tawil syndrome alterations of the baseline ECG are very important to identify patients at risk...
May 22, 2017: Herzschrittmachertherapie & Elektrophysiologie
https://www.readbyqxmd.com/read/28534083/synthetic-alpha-synuclein-fibrils-cause-mitochondrial-impairment-and-selective-dopamine-neurodegeneration-in-part-via-inos-mediated-nitric-oxide-production
#6
Victor Tapias, Xiaoping Hu, Kelvin C Luk, Laurie H Sanders, Virginia M Lee, J Timothy Greenamyre
Intracellular accumulation of α-synuclein (α-syn) are hallmarks of synucleinopathies, including Parkinson's disease (PD). Exogenous addition of preformed α-syn fibrils (PFFs) into primary hippocampal neurons induced α-syn aggregation and accumulation. Likewise, intrastriatal inoculation of PFFs into mice and non-human primates generates Lewy bodies and Lewy neurites associated with PD-like neurodegeneration. Herein, we investigate the putative effects of synthetic human PFFs on cultured rat ventral midbrain dopamine (DA) neurons...
May 22, 2017: Cellular and Molecular Life Sciences: CMLS
https://www.readbyqxmd.com/read/28534047/polysomnographic-heart-rate-variability-indices-and-atrial-ectopy-associated-with-incident-atrial-fibrillation-risk-in-older-community-dwelling-men
#7
Dileep Raman, Farhad Kaffashi, Li-Yung Lui, William H Sauer, Susan Redline, Peter Stone, Peggy M Cawthon, Katie L Stone, Kristine E Ensrud, Sonia Ancoli-Israel, Kenneth Loparo, Reena Mehra
BACKGROUND: Autonomic dysfunction contributes to atrial fibrillation (AF). OBJECTIVE: We hypothesized that polysomnogram (PSG)-based heart rate variability (HRV) autonomic function biomarkers are associated with incident AF and these associations are modified by measures of sleep disordered breathing (SDB). METHODS: 2350 participants of a multi-center prospective study (Outcomes of Sleep Disorders in Older Men Study) without baseline AF underwent sleep studies with incident adjudicated AF follow up (8...
May 2017: JACC. Clinical Electrophysiology
https://www.readbyqxmd.com/read/28534025/atrial-fibrillation-dynamics-and-ionic-block-effects-in-six-heterogeneous-human-3d-virtual-atria-with-distinct-repolarization-dynamics
#8
Carlos Sánchez, Alfonso Bueno-Orovio, Esther Pueyo, Blanca Rodríguez
Atrial fibrillation (AF) usually manifests as reentrant circuits propagating through the whole atria creating chaotic activation patterns. Little is yet known about how differences in electrophysiological and ionic properties between patients modulate reentrant patterns in AF. The goal of this study is to quantify how variability in action potential duration (APD) at different stages of repolarization determines AF dynamics and their modulation by ionic block using a set of virtual whole-atria human models...
2017: Frontiers in Bioengineering and Biotechnology
https://www.readbyqxmd.com/read/28533839/-epidemiology-of-the-relationship-between-atrial-fibrillation-and-heart-failure
#9
Yassine Ragbaoui, Chafia Chehbouni, Ayoub El Hammiri, Rachida Habbal
Atrial fibrillation and heart failure are diseases which often coexist aggravating prognosis and constituting a major public health problem. The aim of this study was to assess the prevalence of atrial fibrillation in patients with chronic heart failure and to determine the clinical profile of this group of patients. We conducted a retrospective descriptive study based on the registry of heart failure of the Department of Cardiology at the University Hospital Centre from June 2006 to March 2015. All patients over 18 years of age with chronic heart failure associated with atrial fibrillation were included in the study...
2017: Pan African Medical Journal
https://www.readbyqxmd.com/read/28533740/correlation-of-ventricular-arrhythmogenesis-with-neuronal-remodeling-of-cardiac-postganglionic-parasympathetic-neurons-in-the-late-stage-of-heart-failure-after-myocardial-infarction
#10
Dongze Zhang, Huiyin Tu, Chaojun Wang, Liang Cao, Robert L Muelleman, Michael C Wadman, Yu-Long Li
Introduction: Ventricular arrhythmia is a major cause of sudden cardiac death in patients with chronic heart failure (CHF). Our recent study demonstrates that N-type Ca(2+) currents in intracardiac ganglionic neurons are reduced in the late stage of CHF rats. Rat intracardiac ganglia are divided into the atrioventricular ganglion (AVG) and sinoatrial ganglion. Only AVG nerve terminals innervate the ventricular myocardium. In this study, we tested the correlation of electrical remodeling in AVG neurons with ventricular arrhythmogenesis in CHF rats...
2017: Frontiers in Neuroscience
https://www.readbyqxmd.com/read/28533591/long-term-histopathological-developments-in-knee-joint-components-in-a-rat-model-of-osteoarthritis-induced-by-monosodium-iodoacetate
#11
Ikufumi Takahashi, Taro Matsuzaki, Masahiro Hoso
[Purpose] This study was performed to evaluate the long-term histopathological changes in knee-joint components including synovial membrane and joint capsule in a rat model of osteoarthritis (OA) induced by monosodium iodoacetate (MIA). [Subjects and Methods] Fifty male rats were used. OA was induced through intra-articular injection of MIA, and ten rats were randomly allocated to each of five groups induced with OA for 1, 2, 4, 6, or 8 weeks. At the end of each period, the knee components were examined histopathologically...
April 2017: Journal of Physical Therapy Science
https://www.readbyqxmd.com/read/28532777/predictive-value-of-age-adjusted-charlson-co-morbidity-index-for-1-3-and-5-year-mortality-in-patients-requiring-transcatheter-mitral-valve-repair
#12
Mike Saji, Marc R Katz, Gorav Ailawadi, Dale E Fowler, Michael Ragosta, D Scott Lim
Co-morbidities increase markedly with aging, and they often negatively affect its prognosis. Although mortality with transcatheter mitral valve repair (TMVr) is significantly less than for open mitral valve surgery in patients at high surgical risk, it remains a concern to identify which patients will benefit from this treatment. Some prognostic metrics have been reported to guide better patient selection; however, universal risk stratification measures have not been established. This study aimed to determine if age-adjusted Charlson co-morbidity index (CCI) could predict mortality in patients who underwent TMVr and to assess its discriminatory performance in long-term outcomes...
April 27, 2017: American Journal of Cardiology
https://www.readbyqxmd.com/read/28532776/effect-of-addition-of-a-statin-to-warfarin-on-thromboembolic-events-in-japanese-patients-with-nonvalvular-atrial-fibrillation-and-diabetes-mellitus
#13
Naoko Kumagai, John A Nusser, Hiroshi Inoue, Ken Okumura, Takeshi Yamashita, Toru Kubo, Hiroaki Kitaoka, Hideki Origasa, Hirotsugu Atarashi
Statins have been shown to decrease stroke risk in patients with cardiovascular risk factors but not to prevent recurrence of ischemic stroke in patients with atrial fibrillation (AF). The present subanalysis aimed to clarify the efficacy of combined use of warfarin and statins in patients with nonvalvular AF (NVAF) with coronary artery disease, diabetes mellitus (DM), or hypertension. The effects of adding statins to warfarin were compared with those of warfarin alone in patients with NVAF with the data set of J-RHYTHM Registry, a prospective, observational study with a 2-year follow-up...
April 27, 2017: American Journal of Cardiology
https://www.readbyqxmd.com/read/28532773/comparison-of-the-incidences-of-complications-after-second-generation-cryoballoon-ablation-of-atrial-fibrillation-using-vitamin-k-antagonists-versus-novel-oral-anticoagulants
#14
Giacomo Mugnai, Carlo de Asmundis, Saverio Iacopino, Erwin Stroker, Massimo Longobardi, Valentina De Regibus, Hugo Enrique Coutino-Moreno, Ken Takarada, Rajin Choudhury, Juan Pablo Abugattas de Torres, Cesare Storti, Pedro Brugada, Gian-Battista Chierchia
Data evaluating the impact of the periprocedural administration of novel oral anticoagulants (NOACs) on complications in the setting of pulmonary vein (PV) isolation using cryoballoon (CB) is limited. In the present study, our aim was to analyze procedural characteristics and incidence of complications in those patients who underwent CB ablation for atrial fibrillation and the impact of NOACs on adverse events compared with vitamin K antagonists (VKAs). Consecutive patients with drug resistant atrial fibrillation who underwent PV isolation by CB as index procedure were retrospectively included in our analysis...
April 27, 2017: American Journal of Cardiology
https://www.readbyqxmd.com/read/28532651/suboptimal-anticoagulant-management-in-japanese-patients-with-nonvalvular-atrial-fibrillation-receiving-warfarin-for-stroke-prevention
#15
Teruyuki Hirano, Hirokazu Kaneko, Sari Mishina, Feng Wang, Satoshi Morita
BACKGROUND: Atrial fibrillation (AF) is the most common cardiac arrhythmia, with increasing prevalence in Japan. Although prothrombin time-international normalized ratio (PT-INR) targets for monitoring warfarin therapy in patients with nonvalvular AF (NVAF) are well defined, real-world patient characteristics and PT-INR levels remain unknown among Japanese patients with NVAF who initiate and continue warfarin (warfarin maintainers) versus those who switch from warfarin to direct oral anticoagulants (DOACs; warfarin switchers)...
May 19, 2017: Journal of Stroke and Cerebrovascular Diseases: the Official Journal of National Stroke Association
https://www.readbyqxmd.com/read/28532634/warfarin-atrial-fibrillation-and-ckd-effective-and-safe-but%C3%A2-soon-extinct
#16
EDITORIAL
John W Larkin, Kevin E Chan
No abstract text is available yet for this article.
June 2017: American Journal of Kidney Diseases: the Official Journal of the National Kidney Foundation
https://www.readbyqxmd.com/read/28532603/matrix-replenishing-by-bmscs-is-beneficial-for-osteoarthritic-temporomandiblar-joint-cartilage
#17
Mian Zhang, Hongxu Yang, Lei Lu, Xianghong Wan, Jing Zhang, Hongyun Zhang, Xiaodong Liu, Xiaofeng Huang, Guozhi Xiao, Meiqing Wang
OBJECTIVES: The present goal was to explore whether matrix replenishment is the primary requirement for osteoarthritic (OA) cartilage. METHODS: Cells isolated from the superficial and deep zone cartilage of a pig temporomandibular joint (TMJ) were exposed to fluid flow shear stress (FFSS). Differences in matrix production and cellular differentiation were detected. Unilateral anterior crossbite (UAC) was applied to C57BL/6J female mice. Green fluorescent protein-labelled exogenous bone marrow stromal cells (GFP-BMSCs) were injected weekly into TMJs, starting from 3 weeks of UAC stimulation and continuing for 4-, 8- and 12-weeks...
May 19, 2017: Osteoarthritis and Cartilage
https://www.readbyqxmd.com/read/28532586/the-role-of-genetics-in-primary-ventricular-fibrillation-inherited-channelopathies-and-cardiomyopathies
#18
Lia Crotti, Maria-Christina Kotta
Sudden cardiac death (SCD) has a strong familial component; however, our understanding of its genetic basis varies significantly according to the underlying causes. When coronary artery disease is involved, the predisposing genetic background is complex and despite some interesting findings it remains largely unknown. Quite different is the case of monogenic structural and non-structural heart diseases, in which a number of disease-causing genes have been established and are being used in clinical practice...
June 15, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/28532237/catheter-ablation-as-first-line-in-atrial-fibrillation-is-rhythm-control-finally-better-than-rate-control
#19
Rhanderson Cardoso, André d'Avila
No abstract text is available yet for this article.
May 22, 2017: Expert Review of Cardiovascular Therapy
https://www.readbyqxmd.com/read/28532180/premature-atrial-complexes-in-an-ischemic-stroke-population-and-risk-of-recurrent-stroke-a-systematic-review
#20
Michala Herskind Sejr, Sam Riahi, Torben Bjerregaard Larsen, Jens Cosedis Nielsen, Peter Brønnum Nielsen
Premature atrial complexes (PACs) have been proposed as a possible mediator between normal sinus rhythm and atrial fibrillation (AF). The aim of this study was to summarize the available knowledge of association between PACs and recurrent stroke or transient ischemic attack (TIA) in ischemic stroke patients. Areas covered: In this systematic review, we investigated the risk of recurrent events in patients who experienced ischemic stroke or TIA. Occurrence of PACs in electrocardiographic monitoring after index stroke/TIA was required...
May 22, 2017: Expert Review of Cardiovascular Therapy
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