Diabetes mellitus is a well-recognized risk-factor for coronary artery disease. It is known that diabetic patients have a two-to fourfold increased risk of mortality or morbidity for cardiovascular diseases compared with the general population. Further, many diabetic patients with coronary heart disease have severe diseased coronary arteries: multi-vessel disease and/or severe stenosed vessel(s...

We present our initial experience with intraoperative angiographic evaluation of coronary artery bypass grafts placed on the beating heart. Thirty-three grafts were investigated in 23 patients. Transfemoral angiography was performed using an OEC 9800 mobile C-arm. Spasm of the graft and/or target vessel was present in 11 grafts, two grafts were severely stenosed requiring surgical revision. In ...

We investigate the effectiveness of two extrapolation-basedmethods aiming to approximate the initial state required by an iterative solver in simulations of unsteady flow problems. The methods lead to about a ten-fold reduction in the iteration count while requiring only negligible computational overhead. They are particularly suitable for parallel computing since they are based almost exclusiv...

The authors describe a case of a critically ill patient presenting after motor vehicle trauma complicated by anterior myocardial infarction and cardiogenic shock. Assessment of myocardial viability in the territory of a critically stenosed left anterior descending artery (LAD) was necessary to determine the optimal management strategy. Bedside dobutamine stress echocardiography (DSE) demonstrat...

CFD simulations are carried out in arterial stenoses with 48 % areal occlusion. Non-newtonian fluid model is selected for the blood flow as the same problem has been solved before with Newtonian fluid model. Studies on flow resistance with the presence of surface irregularities are carried out. Investigations are also performed on the pressure drop at various Reynolds numbers. The present study...

A two-phase macroscopic model of blood in a stenosed catheterized artery under the influence of external transverse magnetic field is studied. The governing partial differential equations of the physical problem are solved analytically. The important blood flow characteristics in arteries namely resistive impedance and wall shear stress are discussed for various governing parameters like Hemato...

The purpose of this study was to investigate whether the anatomic origin of micro-emboli influences their intracranial distribution. In twenty-two baboons, we examined the distribution of 99-Technetium labelled albumin aggregates (5 to 40 microns in size) after injection into the circulation at the left atrium (LA), carotid trifurcation (CA), and anterior and posterior common carotid artery (CC...