In this study we determined the prognostic significance of 50% coronary stenosis in 1183 medically treated patients with coronary artery disease. Clinical outcome was measured by survival and eventfree (freedom from death and infarction) rates. Significant disease was first defined as 75% or greater narrowing. In 225 patients with less than 75% narrowing of all vessels, including 68 patients wi...

Congenital abnormalities of coronary arteries may predispose to life-threatening sudden cardiac events. We present a case of aborted sudden cardiac death in a patient who was diagnosed as having single coronary artery originating from right coronary sinus. The vessell divided into critically stenosed left main trunk and significantly narrowed right coronary artery. The patient was successfully ...

A Mathematical model for the pulsatile blood flow through stenosed artery with the effect of body acceleration and slip velocity is proposed. Blood has been represented by casson fluid equation. Analytic expression for velocity, flow rate, wall shear stress and effective viscosity is derived. Flow variables with the change of parameters are represented graphically. The effect of pulsatility, st...

In this paper, the pulsatile flow of blood through an inclined catheterized stenosed artery is analyzed. Perturbation method is used to solve the implicit system of partial differential equations with suitable boundary conditions. Various analytical expressions axial velocity, flow rate, wall shear stress and effective viscosity have been derived with the help of MATLAB for understanding the fl...

PURPOSE To review our experience with intracranial angioplasty, including the complications we encountered. METHODS During a 3-year period, from 1993 to 1996, 10 patients had intracranial percutaneous transluminal angioplasty (PTA). The stenosed vessels included three internal carotid arteries, one middle cerebral artery, one basilar artery, and five vertebral arteries. Stenosis in all patien...

in the present study, the nonlinear model of non-newtonian blood flow in cosine-shape stenosed elastic artery is numerically examined. the model is carried out for axisymmetric, two-dimensional and fully developed blood flow. the vessel wall is assumed to be have time-dependent radius that is important factor for study of blood flow. the cosine-shape stenosis convert to rigid artery by using a ...

We report a rare case of internal carotid artery agenesis with stenosed intercavernous anastomosis. A 59-year-old male patient presented with a new infarction in the left basal ganglia. Magnetic resonance angiography and cerebral angiography showed that the right internal carotid artery disappeared from the origin to the foramen lacerum segment, and there was an anastomotic artery with severe s...

• The study examines the transport of species in streaming blood through a rigid artery presence multi-irregular stenosis. flow is modeled by Casson constitutive equation. A linear surface reaction considered at artery. Asymptotic expressions are developed for velocity and shear stress coefficients. Extensive visualization velocity, concentration, other characteristics included various stenotic...

Abstract In the present article, impact of shape Copper nanoparticle with water as base fluid on flow criteria in congested non-permeable arteries is analyzed under magnetic effect. Mathematically, a significant response recorded when various shapes nanoparticles are considered stenosed vasculature. To explore effect different shaped nanoparticles, extensive range nanofluid volume fractions, pa...

The numerical simulation has made tremendous advances in investigating the blood flow phenomenon through elastic arteries. Such study can be useful in demonstrating the disease progression and hemodynamics of cardiovascular diseases such as atherosclerosis. In the present study, patient specific case diagnosed with partially stenosed complete right ICA and normal left carotid bifurcation withou...