Two step ejection of massive stars and the issue of their formation in isolation [PDF]
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+27 more
arxiv +3 more sources
Heart failure with preserved ejection fraction [PDF]
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]
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+6 more
doaj +6 more sources
Epicardial Fat in Heart Failure with Preserved Ejection Fraction Compared with Reduced Ejection Fraction [PDF]
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]
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+50 more
arxiv +3 more sources
The properties of dynamically ejected runaway and hyper-runaway stars [PDF]
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+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]
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]
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+16 more
core +7 more sources
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+8 more
doaj +1 more source
Echocardiographic characterization of heart failure [PDF]
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