Characterization of Intestinal Collateral Blood Flow in the Developing Piglet

the effects of changing roughness on the flow structure in the bends

flow in natural river bends is a complex and turbulent phenomenon which affects the scour and sedimentations and causes an irregular bed topography on the bed. for the reason, the flow hydralics and the parameters which affect the flow to be studied and understand. in this study the effect of bed and wall roughness using the software fluent discussed in a sharp 90-degree flume bend with 40.3cm ...

Coronary Collateral Blood Flow

Background. Although aspirin exerts beneficial antiplatelet activity in patients with coronary artery disease, cyclooxygenase blockade produced by aspirin causes a potentially deleterious effect by interrupting endothelial production of prostacyclin. Collateral vessels that develop in response to coronary occlusion display prominent endothelial cell proliferation and undergo vasoconstriction in...

Pharmacoangiographic manipulation of renal collateral blood flow.

Vasodilatory or vasoconstrictive renal pharmacoangiography was applied in investigating the significance of 50 renal artery stenoses. The technique involves comparison of selective magnification renal arteriograms before and after intra-arterial injection of epinephrine or acetylcholine, seeking changes in direction of flow in potential collateral routes. The drug injected depended upon the hem...

Intracranial Pressure and Collateral Blood Flow.

Leptomeningeal collateral vessels, linking the 3 major arterial territories over the surface of the brain, have been recognized for >140 years. More widespread use of advanced clinical imaging in the past decade has led to increasing recognition of the key importance of collaterals in ischemic stroke outcome. However, recent studies from several groups indicate that failure of initially good co...

Peripheral collateral blood flow and vascular reactivity in the dog.