نتایج جستجو برای: filling volume

تعداد نتایج: 348050  

2011
KOJI FUJIWARA Koji Fujiwara J. F. MANNING

Let M be a hyperbolic n–manifold whose cusps have torus crosssections. In [FM10], the authors constructed a variety of nonpositively and negatively curved spaces as “2π–fillings” of M by replacing the cusps of M with compact “partial cones” of their boundaries. These 2π–fillings are closed pseudomanifolds, and so have a fundamental class. We show that the simplicial volume of any such 2π–fillin...

2005
Kazuhiro Katayama Masunori Matsuzaki Jong-Dae Lee

Diastolic flow into the left ventricle during mitral regurgitation must increase as total stroke volume increases in response to the volume overload. The mechanisms that allow augmented diastolic filling are not fully defined. Accordingly, the left ventricle of five dogs was instrumented with a micromanometer and sonomicrometers and studied during the conscious state before (control) and after ...

Journal: :Hypertension 2012
Begoña López Ramón Querejeta Arantxa González Mariano Larman Javier Díez

We investigated whether the quality of myocardial collagen associates with elevated left-sided filling pressures in 38 hypertensive patients with stage C chronic heart failure. Filling pressures were assessed invasively measuring pulmonary capillary wedge pressure. Left ventricular chamber stiffness constant was calculated from the deceleration time of the early mitral filling wave. The fractio...

Journal: :Acta physiologica 2006
F Poelkens D H J Thijssen B Kersten H Scheurwater E W van Laarhoven M T E Hopman

AIM During lower limb immobilization, patients are at risk to develop deep venous thrombosis. Recently, a water-pad was developed that should counteract venous stasis. The water-pad, located under the plaster, mobilizes water from the foot to the calf during weight bearing and, thereby, imitates muscle pump function. The purpose of this study was to assess the effect of the water-pad on venous ...

2005
JOHN W. JONES ROBERT A. BRUCE HAROLD T. DODGE

DEVELOPMENT of a satisfactory method for quantifying left ventricular chamber volumes in man has provided an opportunity to assess changes of volume that occur as a result of diseases of the aortic and mitral valves.1-3 These studies provide data concerning the relationships among chamber volume, stroke volume, and filling pressure of the left ventricle in patients with valvular heart disease.

2014
Fatma Asheibi Alison J.E. Qualtrough Anthony Mellor Philip J. Withers Tristan Lowe Henry Moseley Mohammad M. Hammad

The aim of this study was to compare the volume of voids in a resin-based root canal filling (Resilon) with gutta percha using either cold lateral condensation or continuous wave of compaction filling techniques using computed X-ray micro-tomography (micro-CT). A total of 56 extracted upper anterior human teeth were decoronated, the canals shaped using rotary ProTaper files to a final size of F...

Journal: :Journal of the American College of Cardiology 1988
G D Plotnick B Kahn W J Rogers M L Fisher L C Becker

Whereas improvement in diastolic function indexes in response to therapeutic interventions has been attributed to a beneficial effect of the intervention, measurements of diastolic function appear to be influenced by changes in loading conditions, heart rate and sympathetic tone. To determine the effect of body position and short-term pharmacologic intervention on radionuclide angiographically ...

2007
Steven Boyer Xingru Zhang

We show that the distance between a finite filling slope and a reducible filling slope on the boundary of a hyperbolic knot manifold is at most one. Let M be a knot manifold, i.e. a connected, compact, orientable 3-manifold whose boundary is a torus. A knot manifold is said to be hyperbolic if its interior admits a complete hyperbolic metric of finite volume. Let M(α) denote the manifold obtain...

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