Blood flow through the circulatory system element affected by double stenotic lesions

Techniques for passing the PercuSurge Guardwire system through severe and tortuous stenotic lesions.

Distal embolism is one of the major causes of morbidity and mortality associated with treating stenotic lesions by endovascular procedures, such as percutaneous angioplasty and stenting. Many devices have been designed and used to prevent this complication. The PercuSurge Guardwire system is recognized as the best system available to prevent distal embolism during stenting. However, this system...

Reducing the effects of compressibility in DPD-based blood flow simulations through severe stenotic microchannels

Numerical Simulation of Blood Flow in a Stenotic Artery

The purpose of this paper is to develop a numerical computational methodology for the simulation of blood flow in a stenotic artery. As a first approach biochemical and mechanical interactions between blood and vascular tissue are neglected and the flow is considered through a rigid tube. Considering a non-Newtonian model numerical results are obtained for velocity and shear stresses distributi...

Are the culprit lesions severely stenotic?

Cerebral blood flow immediately following brief circulatory stasis.

Cerebral blood flow was studied in rabbits immediately following complete circulatory stasis of varying duration. Systemic arterial pressure was measured continuously. The postischemic circulation was examined both by an infusion of carbon black and, in separate experiments, by injection of 14C-antipyrine into the blood. We examined the relationship between the duration of stasis, the postische...