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3 results on '"Wang, Zhenze"'

1. Stent graft coverage of dual-stent strategy in the management of abdominal aortic aneurysms

Author

Yuan Ding, Li Zhongyou, Jiang Wentao, Zhang Yinci, Wang Zhenze, and Chen Yu

Subjects
Thoracoabdominal Aortic Aneurysm, SG Coverage, Multilayer Stent (MS), Blood Vessel Branches, Dual Stent, Medicine, Science
Abstract

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.

Published
2018
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3. Stent graft coverage of dual-stent strategy in the management of abdominal aortic aneurysms

Author

Li Zhongyou, Yuan Ding, Chen Yu, Wang Zhenze, Zhang Yinci, and Jiang Wentao

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
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.

Published
2018

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