Results 11 to 20 of about 504,288 (252)

Two step ejection of massive stars and the issue of their formation in isolation [PDF]

, 2010
In this paper we investigate the combined effect of massive binary ejection from star clusters and a second acceleration of a massive star during a subsequent supernova explosion. We call this the "two-step-ejection" scenario. The main results are: i) Massive field stars produced via the two-step-ejection process can not in the vast majority of cases ...
Blaauw, Chevalier, Clarke, de Donder, de Wit, de Wit, Gies, Gvaramadze, Gvaramadze, Heggie, Hoffer, Hoogerwerf, Iben, Jan Pflamm-Altenburg, Kroupa, Lada, Leonard, Mikkola, Mikkola, Parker, Pavel Kroupa, Pflamm-Altenburg, Portegies Zwart, Poveda, Schilbach, Stone, Tauris, Zwicky   +27 more
arxiv   +3 more sources

Heart failure with preserved ejection fraction [PDF]

Global Cardiology Science and Practice, 2012
Heart failure with preserved ejection fraction (HFpEF) has recently emerged as a major cause of cardiovascular morbidity and mortality. Contrary to initial beliefs, HFpEF is now known to be as common as heart failure with reduced ejection fraction (HFrEF) and carries an unacceptably high mortality rate.
ElGuindy, A, Yacoub, MH
openaire   +7 more sources

Surgical myocardial revascularization of patients with ischemic cardiomyopathy and severe left ventricular disfunction [PDF]

Clinics, 2010
OBJECTIVE: To determine long-term survival, identify preoperative factors predictive of a favorable outcome, and assess functional improvement after coronary artery bypass grafting in patients with advanced left ventricular dysfunction.
André L. Hovnanian, Alexandre de Matos Soeiro, Carlos Vicente Serrano Jr, Sérgio Almeida de Oliveira, Fábio B. Jatene, Noedir A. G. Stolf, José A. F. Ramires   +6 more
doaj   +6 more sources

Epicardial Fat in Heart Failure with Preserved Ejection Fraction Compared with Reduced Ejection Fraction [PDF]

Journal of Clinical Medicine
Background: The role of epicardial adipose tissue (EAT) in heart failure with preserved ejection fraction (HFpEF) remains to be defined. Methods: A consecutive series of outpatients with chronic heart failure—heart failure with reduced ejection fraction (HFrEF) and HFpEF and/or diastolic dysfunction—had EAT assessed by echocardiographic measurement and
Gurwinder S. Sidhu, Simon W. Rabkin
openaire   +3 more sources

SEGUE-2 Limits on Metal-Rich Old-Population Hypervelocity Stars In the Galactic Halo [PDF]

ApJ, 2010,723, 812, 2010
We present new limits on the ejection of metal-rich old-population hypervelocity stars from the Galactic center (GC) as probed by the SEGUE-2 survey. Our limits are a factor of 3-10 more stringent than previously reported, depending on stellar type. Compared to the known population of B-star ejectees, there can be no more than 30 times more metal-rich ...
Abadi, Abazajian, Abazajian, Abazajian, Abazajian, Adelman-McCarthy, Adelman-McCarthy, Adelman-McCarthy, Allende Prieto, An, Andrew Gould, Bartko, Benjamin A. Weaver, Brown, Brown, Brown, Brown, Brown, Constance Rockosi, Duquennoy, Edelmann, Gillian Knapp, Gould, Gunn, Gunn, Heather Morrison, Hogg, Jennifer A. Johnson, Juna A. Kollmeier, Kenyon, Kollmeier, Kollmeier, Lada, Lee, Lee, Levin, Lu, Lupton, Munn, Paul Harding, Perets, Pinsonneault, Polnarev, Smith, Stoughton, Timothy C. Beers, Xue, Yanny, York, Young Sun Lee, Yu   +50 more
arxiv   +3 more sources

The properties of dynamically ejected runaway and hyper-runaway stars [PDF]

The Astrophysical Journal, Volume 751, Issue 2, article id. 133 (2012), 2012
Runaway stars are stars observed to have large peculiar velocities. Two mechanisms are thought to contribute to the ejection of runaway stars, both involve binarity (or higher multiplicity). In the binary supernova scenario a runaway star receives its velocity when its binary massive companion explodes as a supernova (SN).
Banerjee, Blaauw, Bromley, Brown, Brown, Brown, Brown, Brown, Brown, Brown, Duquennoy, Edelmann, Hagai B. Perets, Hansen, Hoogerwerf, Kobulnicky, Ladislav Šubr, Levin, Martin, Mason, Mikkola, Murray, Perets, Perets, Perets, Perets, Poveda, Tanikawa, Yu   +28 more
arxiv   +3 more sources

Galectin-3, advanced glycated end-products serum levels, endothelial function and cardiac hemo¬dynamics in post infarction heart failure patients with reduced and preserved ejection fraction. [PDF]

Medičnì Perspektivi, 2018
Epidemiological studies have reported that the rate of signs and symptoms of heart failure after myocardial infarction is approximately 25%. In addition, approximately 40% of myocardial infarctions are accompanied by left ventricular systolic dysfunction.
O. Kuryata, A. Zabida, O. Sirenko
doaj   +5 more sources

Biomarker profiles of acute heart failure patients with a mid-range ejection fraction [PDF]

, 2017
OBJECTIVES: In this study, the authors used biomarker profiles to characterize differences between patients with acute heart failure with a midrange ejection fraction (HFmrEF) and compare them with patients with a reduced (heart failure with a ...
Bloomfield, Daniel M, Cleland, John G.F., Cotter, Gad, Davison, Beth, Dittrich, Howard C, Givertz, Michael M, Hillege, Hans L, Khan, Mohsin A F, Mentz, Robert J, Metra, Marco, O'Connor, Christopher M, Ponikowski, Piotr, Teerlink, John R, Tromp, Jasper, van der Meer, Peter, Van Veldhuisen, Dirk J, Voors, Adriaan A.   +16 more
core   +7 more sources

Heart failure with mildly reduced ejection fraction: retrospective study of ejection fraction trajectory risk

ESC Heart Failure, 2022
Aims Heart failure with mildly reduced ejection fraction (HFmrEF) is associated with a favourable prognosis compared with heart failure (HF) with reduced ejection fraction (EF). We assessed whether left ventricular ejection fraction (LVEF) trajectory can
Robert J.H. Miller, Majid Nabipoor, Erik Youngson, Gynter Kotrri, Nowell M. Fine, Jonathan G. Howlett, Ian D. Paterson, Justin Ezekowitz, Finlay A. McAlister   +8 more
doaj   +1 more source

Echocardiographic characterization of heart failure [PDF]

, 2021
Heart failure is a highly prevalent disease. In failure, the pump function of the heart is insufficient, leading to symptoms such as shortness of breath and fluid retention. Echocardiography is commonly used to diagnose heart failure.
Nauta, Jan F
core   +1 more source