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https://www.readbyqxmd.com/read/29300199/recent-advances-in-heart-failure
#1
Mahwash Kassi, Bashar Hannawi, Barry Trachtenberg
PURPOSE OF REVIEW: Acute heart failure continues to be a challenge as there is limited benefit of numerous agents that have been tested. Cardiac resynchronization therapy remains standard of care, yet timing and need for implantable cardiac defibrillator has been brought into question with the recent randomized trials. Several recent advances have been made towards management of heart failure both in drug and device therapy. The purpose of this review is to provide an update on the most important recent studies on heart failure with reduced ejection fraction (HFrEF) and heart failure with preserved ejection fraction (HFpEF)...
January 2, 2018: Current Opinion in Cardiology
https://www.readbyqxmd.com/read/29275949/foraging-through-multiple-target-categories-reveals-the-flexibility-of-visual-working-memory
#2
Tómas Kristjánsson, Árni Kristjánsson
A key assumption in the literature on visual attention is that templates, actively maintained in visual working memory (VWM), guide visual attention. An important question therefore involves the nature and capacity of VWM. According to load theories, more than one search template can be active at the same time and capacity is determined by the total load rather than a precise number of templates. By an alternative account only one search template can be active within visual working memory at any given time, while other templates are in an accessory state - but do not affect visual selection...
December 21, 2017: Acta Psychologica
https://www.readbyqxmd.com/read/29246510/echocardiographic-detection-of-increased-ventricular-diastolic-stiffness-in-pediatric-heart-transplant-recipients-a-pilot-study
#3
Shahryar M Chowdhury, Ryan J Butts, Anthony M Hlavacek, Carolyn L Taylor, Karen S Chessa, Varsha M Bandisode, Girish S Shirali, Arni Nutting, G Hamilton Baker
BACKGROUND: Pediatric heart transplant recipients are at risk for increased left ventricular (LV) diastolic stiffness. However, the noninvasive evaluation of LV stiffness has remained elusive in this population. The objective of this study was to compare novel echocardiographic measures of LV diastolic stiffness versus gold-standard measures derived from pressure-volume loop (PVL) analysis in pediatric heart transplant recipients. METHODS: Patients undergoing left heart catheterization were prospectively enrolled...
December 12, 2017: Journal of the American Society of Echocardiography
https://www.readbyqxmd.com/read/29241163/diagnosis-and-management-of-necrotizing-enterocolitis-an-international-survey-of-neonatologists-and-pediatric-surgeons
#4
Mélanie Valpacos, Delphine Arni, Amy Keir, Ann Aspirot, James C H Wilde, Spencer Beasley, Daniele De Luca, Riccardo E Pfister, Oliver Karam
BACKGROUND: Necrotizing enterocolitis (NEC) is a serious complication of prematurity. Currently, there is limited evidence to guide investigation and treatment strategies. OBJECTIVES: To evaluate the parameters used to diagnose or exclude NEC, and to identify differences between neonatologists and pediatric surgeons. METHODS: A scenario-based survey was sent to neonatologists and pediatric surgeons. RESULTS: 173 physicians from 26 countries completed the survey (55% neonatologists and 45% pediatric surgeons)...
December 15, 2017: Neonatology
https://www.readbyqxmd.com/read/29232274/from-theory-to-practice-the-diuretic-potential-of-sacubitril-valsartan-a-tale-of-2-patients
#5
Sabrina M Hormann, Lindsay E Davis, Elizabeth K Pogge
BACKGROUND: Heart failure prevalence continues to rise in the United States causing significant morbidity and mortality and costing billions in healthcare expenditures. Consensus guidelines updated in 2016 recommend an angiotensin receptor-neprilysin inhibitor (ARNi) as a therapeutic option in lieu of an angiotensin-converting enzyme inhibitor or angiotensin receptor blocker for the management of stage C heart failure with reduced ejection fraction (HFrEF). For chronic HFrEF patients with New York Heart Association class II or III symptoms tolerating an angiotensin-converting enzyme inhibitor/angiotensin receptor blocker, a change in therapy to an ARNi is recommended to further reduce morbidity and mortality...
December 11, 2017: Journal of Cardiovascular Nursing
https://www.readbyqxmd.com/read/29225105/interpretation-of-b-type-natriuretic-peptides-in-the-era-of-angiotensin-receptor-neprilysin-inhibitors
#6
Paulo Bettencourt, Cândida Fonseca, Fátima Franco, Aurora Andrade, Dulce Brito
Assessment of serum levels of natriuretic peptides, especially the amino-terminal portion (NT-proBNP) and the carboxy-terminal portion (BNP) of pro-B-type natriuretic peptide, has had a highly significant clinical impact on the diagnosis and prognostic stratification of patients with heart failure (HF). They are now an instrument with recognized value in this context and several studies have demonstrated their value in tailoring therapy for these patients. Following the recent advent of angiotensin receptor-neprilysin inhibitors (ARNIs), there is a need to review how these two biomarkers are interpreted in HF...
December 7, 2017: Portuguese Journal of Cardiology: An Official Journal of the Portuguese Society of Cardiology
https://www.readbyqxmd.com/read/29203545/bordetella-pertussis-adenylate-cyclase-toxin-disrupts-functional-integrity-of-bronchial-epithelial-layers
#7
Shakir Hasan, Nikhil Nitin Kulkarni, Arni Asbjarnarson, Irena Linhartova, Radim Osicka, Peter Sebo, Gudmundur H Gudmundsson
Airway epithelium restricts penetration of inhaled pathogens into the underlying tissue and plays a crucial role in innate immune defense against respiratory infections. The whooping cough agent, Bordetella pertussis, adheres to ciliated cells of human airway epithelium and subverts its defense functions through the action of secreted toxins and other virulence factors. We have examined the impact of B. pertussis infection and of adenylate cyclase toxin (CyaA) action on the functional integrity of air-liquid interface (ALI)-cultured human bronchial epithelial cells...
December 4, 2017: Infection and Immunity
https://www.readbyqxmd.com/read/29197185/structure-and-interaction-of-corynebacterium-pseudotuberculosis-cold-shock-protein-a-with-y-box-single-stranded-dna-fragment
#8
Ícaro P Caruso, Vineet Panwalkar, Monika A Coronado, Andrew J Dingley, Marinônio L Cornélio, Dieter Willbold, Raghuvir K Arni, Raphael J Eberle
Cold shock proteins (Csps) function to preserve cell viability at low temperatures by binding to nucleic acids and consequently control gene expression. The mesophilic bacterium Corynebacterium pseudotuberculosis is the causative agent of caseous lymphadenitis in animals, and infection to livestock is a considerable economic burden worldwide. In this report, the structure of cold shock protein A from C. pseudotuberculosis (Cp-CspA) and biochemical analysis of its temperature-dependent interaction with a Y-box single-stranded DNA (ssDNA) motif is presented...
December 2, 2017: FEBS Journal
https://www.readbyqxmd.com/read/29192956/initial-clinical-experience-with-the-first-drug-sacubitril-valsartan-in-a-new-class-arnis-in-patients-with-heart-failure-with-reduced-left-ventricular-ejection-fraction-in-poland
#9
Marta Kałużna-Oleksy, Jolanta Kolasa, Jacek Migaj, Agnieszka Pawlak, Małgorzata Lelonek, Jadwiga Nessler, Ewa Straburzyńska-Migaj
Sacubitril/valsartan is the first drug from a new class of angiotensin receptor neprilisin inhibitors (ARNIs) recommended in the new European Society of Cardiology's guidelines instead of ACEIs, or ARBs (angiotensin receptor antagonists) used if ACEIs are not tolerated, for further reduction in the risk of hospitalisation or death in outpatients with HFrEF if symptoms continue despite optimal treatment with ACEIs/ARBs, betablockers and MRAs (mineralocorticoid antagonists). The aim of this paper is to present the initial experience with regard to the effectiveness, tolerance and safety of sacubitril/valsartan in the outpatient cardiology practice in Poland...
December 1, 2017: Kardiologia Polska
https://www.readbyqxmd.com/read/29183846/do-we-still-need-icds-if-we-have-arni
#10
EDITORIAL
Joachim R Ehrlich
No abstract text is available yet for this article.
November 25, 2017: Heart Rhythm: the Official Journal of the Heart Rhythm Society
https://www.readbyqxmd.com/read/29157420/learning-features-in-a-complex-and-changing-environment-a-distribution-based-framework-for-visual-attention-and-vision-in-general
#11
Andrey Chetverikov, Gianluca Campana, Árni Kristjánsson
What are the building blocks of our visual representations? Whatever we look at, the things we see will have some feature variability: even snow is not purely white but has a range of shades of white. However, in most studies investigating visual perception, homogeneous displays with all stimuli having a very limited range of features have been used. In contrast, recent studies using heterogeneous displays have shown that our perceptual system encodes surprisingly detailed information about stimuli, representing parameters such as the mean, variance, and most importantly the probability density functions of feature distributions...
2017: Progress in Brain Research
https://www.readbyqxmd.com/read/29153198/n-terminal-b-type-natriuretic-peptide-in-heart-failure
#12
REVIEW
Arthur Mark Richards
Plasma amino-terminal pro-B-type natriuretic peptide (NT-proBNP) is a guideline-mandated biomarker in heart failure (HF). Used as an inclusion criterion for therapeutic trials, NT-proBNP enriches trial populations and is a valid surrogate endpoint. Its diagnostic performance is best validated in acute decompensated HF (ADHF). NT-proBNP offers prognostic information independent of standard clinical predictors and refines risk stratification. With the advent of combined angiotensin 2 type 1 receptor blockade and neprilysin inhibition (ARNI) NT-proBNP retains its relationship to cardiac status and is the marker of choice in assessment of possible ADHF and in serial monitoring of HF patients receiving ARNI treatment...
January 2018: Heart Failure Clinics
https://www.readbyqxmd.com/read/29145948/type-of-atrial-fibrillation-and-outcomes-in%C3%A2-patients-with-heart-failure-and-reduced%C3%A2-ejection%C3%A2-fraction
#13
RANDOMIZED CONTROLLED TRIAL
Ulrik M Mogensen, Pardeep S Jhund, William T Abraham, Akshay S Desai, Kenneth Dickstein, Milton Packer, Jean L Rouleau, Scott D Solomon, Karl Swedberg, Michael R Zile, Lars Køber, John J V McMurray
BACKGROUND: Atrial fibrillation (AF) is common in heart failure (HF), but the outcome by type of AF is largely unknown. OBJECTIVES: This study investigated outcomes related to type of AF (paroxysmal, persistent or permanent, or new onset) in 2 recent large trials in patients with HF with reduced ejection fraction. METHODS: The study analyzed patients in the PARADIGM-HF (Prospective comparison of ARNI with ACEI to Determine Impact on Global Mortality and morbidity in Heart Failure) and ATMOSPHERE (Aliskiren Trial to Minimize Outcomes in Patients with Heart Failure) trials...
November 14, 2017: Journal of the American College of Cardiology
https://www.readbyqxmd.com/read/29141857/contemporary-characteristics-and-outcomes-in-chagasic-heart-failure-compared-with-other-nonischemic-and-ischemic-cardiomyopathy
#14
Li Shen, Felix Ramires, Felipe Martinez, Luiz Carlos Bodanese, Luis Eduardo Echeverría, Efraín A Gómez, William T Abraham, Kenneth Dickstein, Lars Køber, Milton Packer, Jean L Rouleau, Scott D Solomon, Karl Swedberg, Michael R Zile, Pardeep S Jhund, Claudio R Gimpelewicz, John J V McMurray
BACKGROUND: Chagas' disease is an important cause of cardiomyopathy in Latin America. We aimed to compare clinical characteristics and outcomes in patients with heart failure (HF) with reduced ejection fraction caused by Chagas' disease, with other etiologies, in the era of modern HF therapies. METHODS AND RESULTS: This study included 2552 Latin American patients randomized in the PARADIGM-HF (Prospective Comparison of ARNI With ACEI to Determine Impact on Global Mortality and Morbidity in Heart Failure) and ATMOSPHERE (Aliskiren Trial to Minimize Outcomes in Patients With Heart Failure) trials...
November 2017: Circulation. Heart Failure
https://www.readbyqxmd.com/read/29098939/adsorption-of-inorganic-mercury-from-aqueous-solutions-onto-dry-biomass-of-chlorella-vulgaris-kinetic-and-isotherm-study
#15
Carlo Solisio, Saleh Al Arni, Attilio Converti
This study focused on kinetics and equilibrium isotherms of mercury biosorption from water using dry biomass of Chlorella vulgaris as biosorbent at pH 5.0. Biosorption tests were performed at 2.0 g/L biomass dosage varying initial Hg concentration from 11.0 to 90.6 mg/L. The Lagergren equation was found to best describe the process, with R(2) of 0.984 and specific rate constant of 0.029±0.004 min(-1). Although equilibrium data were well fitted by the Dubinin and Radushkevich isotherm (R(2) = 0.870; qDR = 16...
November 3, 2017: Environmental Technology
https://www.readbyqxmd.com/read/29066613/severe-negative-energy-balance-during-21-d-at-high-altitude-decreases-fat-free-mass-regardless-of-dietary-protein-intake-a-randomized-controlled-trial
#16
Claire E Berryman, Andrew J Young, J Philip Karl, Robert W Kenefick, Lee M Margolis, Renee E Cole, John W Carbone, Harris R Lieberman, Il-Young Kim, Arny A Ferrando, Stefan M Pasiakos
In this 2-phase randomized controlled study, we examined whether consuming a higher protein (HP) diet would attenuate fat-free mass (FFM) loss during energy deficit (ED) at high altitude (HA) in 17 healthy males (mean ± sd: 23 ± 6 yr; 82 ± 14 kg). During phase 1 at sea level (SL, 55 m), participants consumed a eucaloric diet providing standard protein (SP; 1.0 g protein/kg,) for 21 d. During phase 2, participants resided at HA (4300 m) for 22 d and were randomly assigned to either an SP or HP (2.0 g protein/kg) diet designed to elicit a 40% ED...
October 24, 2017: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
https://www.readbyqxmd.com/read/29066101/quality-of-meal-protein-determines-anabolic-response-in-older-adults
#17
Il-Young Kim, Yun-A Shin, Scott E Schutzler, Gohar Azhar, Robert R Wolfe, Arny A Ferrando
BACKGROUND & AIMS: It has been demonstrated that the relative content and profile of essential amino acids (EAA) play a determining role for stimulation of muscle protein synthesis (MPS) following intake of pure EAA or protein alone. METHODS: To test if this also holds in the context of mixed meals at both whole body and muscle levels, twelve older subjects (57-74 yrs) received primed continuous infusion of L-[ring-(2)H5]phenylalanine and L-[ring-(2)H2]tyrosine over a 9-h experimental period to determine whole body protein kinetics and MPS in the fasted state and following consumption of egg-based (EGG) or cereal-based (CEREAL) isocaloric and isonitrogenous breakfast...
October 6, 2017: Clinical Nutrition: Official Journal of the European Society of Parenteral and Enteral Nutrition
https://www.readbyqxmd.com/read/29060439/design-of-an-mhealth-system-for-maternal-and-children-hiv-care
#18
Allya P Koesoema, Arni Ariani, Yoke S Irawan, Soegijardjo Soegijoko
While progress has been made to slow down its spread and increase uptake of treatment, human immunodeficiency virus infection and acquired immune deficiency syndrome (HIV/AIDS) is still a highly significant health problem for many low- and middle-income countries (LMICs). Specifically, almost half of new HIV patients in Asia Pacific were children. The prevention of mother-to-child transmission faces complex socioeconomic and other problems. With the increasing growth of mobile technologies in LMICs, especially in Asia Pacific, mHealth, the application of mobile technology for health applications, has a significant potential to help alleviate these problems...
July 2017: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/29053805/longitudinal-measures-of-deformation-are-associated-with-a-composite-measure-of-contractility-derived-from-pressure-volume-loop-analysis-in-children
#19
Shahryar M Chowdhury, Ryan J Butts, Carolyn L Taylor, Varsha M Bandisode, Karen S Chessa, Anthony M Hlavacek, Arni Nutting, Girish S Shirali, G Hamilton Baker
Aims: The relationship between echocardiographic measures of left ventricular (LV) systolic function and reference-standard measures have not been assessed in children. The objective of this study was to assess the validity of echocardiographic indices of LV systolic function via direct comparison to a novel composite measure of contractility derived from pressure-volume loop (PVL) analysis. Methods and results: Children with normal loading conditions undergoing routine left heart catheterization were prospectively enrolled...
June 29, 2017: European Heart Journal Cardiovascular Imaging
https://www.readbyqxmd.com/read/29048993/personalized-risk-prediction-in-clinical-oncology-research-applications-and-practical-issues-using-survival-trees-and-random-forests
#20
Chen Hu, Jon Arni Steingrimsson
A crucial component of making individualized treatment decisions is to accurately predict each patient's disease risk. In clinical oncology, disease risks are often measured through time-to-event data, such as overall survival and progression/recurrence-free survival, and are often subject to censoring. Risk prediction models based on recursive partitioning methods are becoming increasingly popular largely due to their ability to handle nonlinear relationships, higher-order interactions, and/or high-dimensional covariates...
October 19, 2017: Journal of Biopharmaceutical Statistics
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