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Hemodynamic Changes in Coronary Artery after Stent Implantat

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batool towailib

on 1 March 2015

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Transcript of Hemodynamic Changes in Coronary Artery after Stent Implantat

ABSTRACT
Change in:
Flow Pattern
Pressure
Wall Shear Stress


FLOW PATTERN
After stent implantation, the maximums flow rate decreased to 1.602 m/s.

The areas of high wall shear stress are similar to the high velocity.

The maximum shear stress is decreased in the pre-stenting case than in the post-stenting case.

Stent implantation is a minimally invasive procedure for treatment of coronary artery stenosis.


After stenting, the simulation shows a reduction of wall pressure and wall shear stress and a more equal flow through arteries after stenting. After stenting, the simulation shows a reduction of wall pressure and wall shear stress and a more equal flow through arteries after stenting.

In the post-stenting case, the pressure is much lower compared with pre-stenting case.

Inside the stent, it dropped smoothly before the bifurcation.

Hemodynamic Changes in Coronary Artery after stent Implantation
The aim is to study the hemodynamic changes in coronary artery after stent implantation.
The flow rate in pre- and post-stenting models was measured.
The maximum flow rate before stent implantation was 2.938 m/s.
PRESSURE
WALL SHEAR STRESS
DISCUSSION and CONCLUSION
1. P. W. Serruys, P. de Jaegere, and F. Kiemeneij, “A comparison of balloon-expandable-stent implantation with balloon angioplasty in patients with coronary artery disease,” Benestent Study Group. N Eng J Med, vol. 331, pp. 489-495, 1994.

2. N. Duraiswamy, R. T. Schoephoerster, M. R. Moreno, and J. E. Moore, “Stented artery flow patterns and their effects on the artery wall,” Ann Rev Fluid Mech, vol.39, pp. 357-382, 2007

3. C. Rogers and E. R. Edelman, “Endovascular stent design dictates experimental restenosis and thrombosis,” Circulation, vol. 91, pp. 2995-3001, 1995

4. C. Lally, F. Dolan, and P. J. Prendergast, “Cardiovascular stent design and vessel stresses: a finite element analysis,” J Biomech, vol. 38, pp. 1574-1581, 2005

5. J. Bedoya, C. A. Meyer, L. H. Timmins, M. R. Moreno, and J. E. Moore, “Effects of stent design parameters on normal artery wall mechanics,” J Biomech Eng, vol. 128, pp. 757-765, 2006.

6. Görge G, Haude M, Junbo G, et al. Intravascular ultrasound after low and high inflation pressure coronary artery stent implantation. J Am Coll Cardiol. 1995;26(3):725-730. doi:10.1016/0735-1097(95)00211-L.

REFERENCES
by:
Fatimah Al-Towailb
Eman Ateeq
Lama almofeez
Maram AlFares
muneerah-alshokr

Instructor: Dr. Mohammed siddiqui

University of Dammam
College of Engineering
Dept. of Biomedical Engineering
Fluid Mechanics
(BIOEN 441-01)

Coronary arteries are subjected to complex deformation in the cardiac cycle.

Nowadays stent placement becomes a common intervention procedure for treatment of coronary artery disease and its clinical outcome was better when compared to standard angioplasty.
Thanks For Listening
Any Question
INTRODUCTION
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