منابع مشابه
Newtonian and Non-Newtonian Blood Flow Simulation after Arterial Stenosis- Steady State and Pulsatile Approaches
Arterial stenosis, for example Atherosclerosis, is one of the most serious forms of arterial disease in the formation of which hemodynamic factors play a significant role. In the present study, a 3-D rigid carotid artery with axisymmetric stenosis with 75% reduction in cross-sectional area is considered. Laminar blood flow is assumed to have both Newtonian and non-Newtonian behavior (generalize...
متن کاملNumerical Study of Hemodynamic Wall Parameters on Pulsatile Flow through Arterial Stenosis
In this paper hemodynamic wall parameters which play an important role to diagnose arterial disease were studied and compared for three different rheology models (Newtonian, Power law and Quemada). Also because of the pulsatile behavior of blood flow the results were obtained for three Womersley numbers which represent the frequencies of the applied pulses. Results show that Quemada model alway...
متن کاملPressure-flow Studies in Hypertrophic Subaortic Stenosis.
In 1942 Robb and Robb (1) suggested that the outflow tract of the left ventricle might be obstructed by an asynchronous contraction of the deep bulbo spiral muscle bundle. Brock described a clinical entity resulting from muscular obstruction to the left ventricular outflow tract in 1957 (2). The pathological anatomy in eight such cases of muscular obstruction was presented by Teare in 1958 (3)....
متن کاملPulmonary arterial pressure at high pulmonary flow.
The relationship between pulmonary arterial pressure and pulmonary blood flow has been studied by a number of investigators in anesthetized animals (1), in man after pneumonectomy or unilateral pulmonary arterial occlusion (2, 3), and in normal man during exercise (4-7). With a few exceptions (1) these studies have agreed that doubling or trebling the pulmonary arterial flow does not produce a ...
متن کاملEffect of coronary arterial pressure on coronary stenosis resistance.
The effects of coronary pressure on coronary stenosis resistance were studied in 13 open-chest dogs. A noncircumferential stenosis was produced in the circumflex coronary artery by placing sutures into either side of the artery and invaginating a portion of the arterial wall by tying the sutures. Coronary pressure both proximal and distal to the stenosis and coronary flow were measured. Coronar...
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ژورنال
عنوان ژورنال: The Journal of Thoracic and Cardiovascular Surgery
سال: 1976
ISSN: 0022-5223
DOI: 10.1016/s0022-5223(19)40127-x