NDLI: Computational approach to hemodynamics in femoral bypass graft

Content Provider	IEEE Xplore Digital Library
Author	Qiao, A. Matsuzawa, T.
Copyright Year	2004
Description	Author affiliation: Japan Adv. Inst. of Sci. & Technol., Japan (Qiao, A.; Matsuzawa, T.)
Abstract	Femoral bypassing remains an effective surgical technique to rescue lower extremity peripheral vascular diseases. A great number of grafts have moderate patency rates and fail in the long term. Geometry configuration is considered to have direct influences on the hemodynamics which is correlated with the pathological changes of bypassed femoral arteries. The overall goal of the present study is to investigate the hemodynamic influences of an anastomosis configuration on the pathological mechanisms of intimal hyperplasia and restenosis that result in the bypassing surgery failure. The authors presented an anastomosis configuration with symmetric 2-way bypass grafts for the purpose of improving the hemodynamics. The physiological blood flows in the conventional 1-way model and the presented 2-way model of fully stenosed femoral bypass grafts were simulated with computational approaches. The temporal and spatial distributions of flow patterns and wall shear stresses in the vicinity of distal anastomosis were analyzed and compared. The result of the present study indicates that the 2-way model is featured with larger longitudinal velocity, less refluence and eddy flow, more uniform wall shear stress distribution and smaller magnitude of wall shear stress gradient. All of these features demonstrate that the hemodynamics in the symmetric 2-way bypass graft is significantly improved and is quite favorable for alleviating the intimal hyperplasia and restenosis and ameliorating the patency rates of femoral bypass graft. One of the possibilities which the present study can offer is enabling the surgeon to gain an approximate idea of the hemodynamic conditions that occur after the implantation of a symmetric 2-way bypass graft and to control over the geometry configuration of the anastomosis in order to achieve optimal hemodynamics and to maximize the success rates of bypassing surgery.
Sponsorship	High Performance Comput. SIG Information Processing Soc. of Japan IEEE Comput. Soc. Japan Chapter
Starting Page	411
Ending Page	418
File Size	4082603
Page Count	8
File Format	PDF
ISBN	076952138X
DOI	10.1109/HPCASIA.2004.1324066
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2004-07-22
Publisher Place	Japan
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Hemodynamics Surgery Stress Geometry Pathology Extremities Atherosclerosis Arteries Blood flow Computational modeling
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in