Results 21 to 30 of about 320,385 (290)
Diagnostics, 2023 Heart failure with reduced ejection fraction (HFrEF) is considered a major health care problem with frequent decompensations, high hospitalization and mortality rates.
Syuzanna Shahnazaryan +2 more
doaj +1 more source
Arquivos Brasileiros de Cardiologia, 2015 Background: The prevalence and clinical outcomes of heart failure with preserved left ventricular ejection fraction after acute myocardial infarction have not been well elucidated. Objective: To analyze the prevalence of heart failure with preserved left
Lucas Antonelli +9 more
doaj +1 more source
Dynamical ejections of massive stars from young star clusters under diverse initial conditions [PDF]
A&A 590, A107 (2016), 2016 We study the effects of initial conditions of star clusters and their massive star population on dynamical ejections of massive stars from star clusters up to an age of 3 Myr. We use a large set of direct N-body calculations for moderately massive star clusters (Mecl=$10^{3.5}$ Msun).
arxiv +1 more source
Relação entre fração de ejeção cardíaca e pressão arterial em pacientes coronariopatas
Rev Rene, 2017 Objective: to analyze the existence of a relationship between cardiac ejection fraction during hospitalization with blood pressure values obtained before and during hospitalization in patients hospitalized for coronary disease.
Nila Larisse Silva de Albuquerque +4 more
doaj +1 more source
Journal of the American Heart Association: Cardiovascular and Cerebrovascular Disease, 2020 Background Many patients with heart failure (HF) experience changes in left ventricular ejection fraction (LVEF) during follow‐up. We sought to evaluate the predictors and outcomes of different HF phenotypes according to longitudinal changes in EF ...
Jin Joo Park +5 more
doaj +1 more source
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 +6 more
doaj +1 more source
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).
arxiv +1 more source
Dependency of dynamical ejections of O stars on the masses of very young star clusters [PDF]
, 2015 Massive stars can be efficiently ejected from their birth clusters through encounters with other massive stars. We study how the dynamical ejection fraction of O star systems varies with the masses of very young star clusters, Mecl, by means of direct N -body calculations.
arxiv +1 more source
Observable Signatures of a Black Hole Ejected by Gravitational Radiation Recoil in a Galaxy Merger [PDF]
Phys.Rev.Lett.99:041103,2007, 2007 According to recent general-relativistic simulations, the coalescence of two spinning black holes (BHs) could lead to recoil speeds of the BH remnant of up to thousands of km/s as a result of the emission of gravitational radiation. Such speeds would enable the merger product to escape its host galaxy. Here we examine the circumstances resulting from a
arxiv +1 more source
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 ...
arxiv +1 more source