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Stent graft coverage of dual-stent strategy in the management of abdominal aortic aneurysms
- Source :
- Scientific Reports, Vol 8, Iss 1, Pp 1-6 (2018), Scientific Reports
- Publication Year :
- 2018
- Publisher :
- Nature Portfolio, 2018.
-
Abstract
- Treating an abdominal aortic aneurysm (AAA) with a stent graft (SG) and a multilayer stent (MS) is a key technology in isolating flow fields. Clinically, dual stents (an SG in the proximal and an MS in the distal of AAA) are used for treatment of AAA, but only a few studies have examined the relationship between SG coverage and treatment effects. Through numerical simulation of the hemodynamics after SG and MS implantation, the SG coverage and position were simulated at 0% (0 mm), 25% (13.75 mm), 50% (27.5 mm), and 75% (41.25 mm). With increasing SG coverage, the pressure on the aneurysm sac wall and the flow of branch vessels gradually decreased, and the lower wall shear stress (WSS) gradually increased. The changes in pressure, lower WSS, and the mass flow rate of the branch vessels did not change significantly. The coverage of the SG has a nonsignificant effect on hemodynamics in the treatment of AAA; the implantation position need not be very precise. This research can provide theoretic support for clinicians’ decision-making.
- Subjects :
- SG Coverage
medicine.medical_specialty
medicine.medical_treatment
Science
0206 medical engineering
Blood Vessel Branches
Hemodynamics
02 engineering and technology
030204 cardiovascular system & hematology
Thoracoabdominal Aortic Aneurysm
Article
Multilayer stent
03 medical and health sciences
0302 clinical medicine
Aneurysm
Internal medicine
Dual Stent
Pressure
medicine
Multilayer Stent (MS)
cardiovascular diseases
Multidisciplinary
Interventional cardiology
business.industry
Stent
Models, Theoretical
medicine.disease
020601 biomedical engineering
Abdominal aortic aneurysm
Treatment Outcome
Hydrodynamics
Cardiology
cardiovascular system
Medicine
Stents
Stress, Mechanical
Shear Strength
business
Software
Aortic Aneurysm, Abdominal
Subjects
Details
- Language :
- English
- ISSN :
- 20452322
- Volume :
- 8
- Issue :
- 1
- Database :
- OpenAIRE
- Journal :
- Scientific Reports
- Accession number :
- edsair.doi.dedup.....1970412898cffcdb684ce1e8d91fb18a