Changes in hemodynamics following carotid stent implantation
- VernacularTitle:颈动脉支架置入后的血流动力学改变
- Author:
Nika CHEN
- Publication Type:Journal Article
- From:
Chinese Journal of Tissue Engineering Research
2007;0(35):-
- CountryChina
- Language:Chinese
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Abstract:
Carotid stent implantation effectively improves cerebral blood flow perfusion and blood flow rate of stenotic segment. This method has been considered one of effective methods for treating carotid artery stenosis. Surface tear of the endomembrane and atherosclerotic plaque induced by balloon dilatation,mechanical expansion and carotid sinus draw-off can adjust compliance of the carotid wall,change sensitiveness of carotid artery receptor,cause instability of hemadynamics and defluxion of plaque fragments,lead to hypotension,bradycardia,hypertension and vascular embolism. How to control and reduce occurrence of above-mentioned complications is a main problem in present studies. Stent should be soft,with good lateral bending property,and diameter of the stent should be 1.0-2.0 mm longer than the actual stenosis. Implantation technique should be improved. These can reduce extrusion and cutting action of the atheromatous plaque due to balloon dilatation and stent expansion,and prevent plaque defluxion during implantation. Filter protection device is used to filter tissue debris and to prevent microemboli entering cerebral circulation,which can elevate safety of carotid stent implantation.
