{"title":"肺动脉狭窄血流动力学数值分析。","authors":"Fan He, Xinyu Wang, Lu Hua, Tingting Guo","doi":"10.3233/BME-221418","DOIUrl":null,"url":null,"abstract":"<p><strong>Background: </strong>Pulmonary artery stenosis is a serious threat to people's life and health.</p><p><strong>Objective: </strong>The hydrodynamic mechanism of pulmonary artery stenosis is investigated.</p><p><strong>Methods: </strong>Numerical analysis of hemodynamics in pulmonary artery stenosis using computational fluid dynamics techniques is performed. An idealized model of pulmonary artery stenosis is established, and the model is divided into main pulmonary artery, right and left pulmonary arteries, and their branches. The sections at different positions are intercepted to study the distribution trend of maximum velocity, pressure and wall shear stress.</p><p><strong>Results: </strong>The numerical simulation results show that the pressure drop at both ends of the narrow area is large. High velocity and wall shear stress exist in the center of stenosis, and the wall shear stress at the distal end of stenosis gradually decreases, resulting in endothelial dysfunction.</p><p><strong>Conclusions: </strong> To some extent, this study helps clinicians make diagnosis and treatment plans in advance and improve prognosis. This method could be used in the numerical simulation of practical models.</p>","PeriodicalId":9109,"journal":{"name":"Bio-medical materials and engineering","volume":"34 3","pages":"235-246"},"PeriodicalIF":1.0000,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Numerical analysis of hemodynamics in pulmonary artery stenosis.\",\"authors\":\"Fan He, Xinyu Wang, Lu Hua, Tingting Guo\",\"doi\":\"10.3233/BME-221418\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p><strong>Background: </strong>Pulmonary artery stenosis is a serious threat to people's life and health.</p><p><strong>Objective: </strong>The hydrodynamic mechanism of pulmonary artery stenosis is investigated.</p><p><strong>Methods: </strong>Numerical analysis of hemodynamics in pulmonary artery stenosis using computational fluid dynamics techniques is performed. An idealized model of pulmonary artery stenosis is established, and the model is divided into main pulmonary artery, right and left pulmonary arteries, and their branches. The sections at different positions are intercepted to study the distribution trend of maximum velocity, pressure and wall shear stress.</p><p><strong>Results: </strong>The numerical simulation results show that the pressure drop at both ends of the narrow area is large. High velocity and wall shear stress exist in the center of stenosis, and the wall shear stress at the distal end of stenosis gradually decreases, resulting in endothelial dysfunction.</p><p><strong>Conclusions: </strong> To some extent, this study helps clinicians make diagnosis and treatment plans in advance and improve prognosis. This method could be used in the numerical simulation of practical models.</p>\",\"PeriodicalId\":9109,\"journal\":{\"name\":\"Bio-medical materials and engineering\",\"volume\":\"34 3\",\"pages\":\"235-246\"},\"PeriodicalIF\":1.0000,\"publicationDate\":\"2023-01-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Bio-medical materials and engineering\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://doi.org/10.3233/BME-221418\",\"RegionNum\":4,\"RegionCategory\":\"医学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q4\",\"JCRName\":\"ENGINEERING, BIOMEDICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Bio-medical materials and engineering","FirstCategoryId":"5","ListUrlMain":"https://doi.org/10.3233/BME-221418","RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"ENGINEERING, BIOMEDICAL","Score":null,"Total":0}
Numerical analysis of hemodynamics in pulmonary artery stenosis.
Background: Pulmonary artery stenosis is a serious threat to people's life and health.
Objective: The hydrodynamic mechanism of pulmonary artery stenosis is investigated.
Methods: Numerical analysis of hemodynamics in pulmonary artery stenosis using computational fluid dynamics techniques is performed. An idealized model of pulmonary artery stenosis is established, and the model is divided into main pulmonary artery, right and left pulmonary arteries, and their branches. The sections at different positions are intercepted to study the distribution trend of maximum velocity, pressure and wall shear stress.
Results: The numerical simulation results show that the pressure drop at both ends of the narrow area is large. High velocity and wall shear stress exist in the center of stenosis, and the wall shear stress at the distal end of stenosis gradually decreases, resulting in endothelial dysfunction.
Conclusions: To some extent, this study helps clinicians make diagnosis and treatment plans in advance and improve prognosis. This method could be used in the numerical simulation of practical models.
期刊介绍：
The aim of Bio-Medical Materials and Engineering is to promote the welfare of humans and to help them keep healthy. This international journal is an interdisciplinary journal that publishes original research papers, review articles and brief notes on materials and engineering for biological and medical systems. Articles in this peer-reviewed journal cover a wide range of topics, including, but not limited to: Engineering as applied to improving diagnosis, therapy, and prevention of disease and injury, and better substitutes for damaged or disabled human organs; Studies of biomaterial interactions with the human body, bio-compatibility, interfacial and interaction problems; Biomechanical behavior under biological and/or medical conditions; Mechanical and biological properties of membrane biomaterials; Cellular and tissue engineering, physiological, biophysical, biochemical bioengineering aspects; Implant failure fields and degradation of implants. Biomimetics engineering and materials including system analysis as supporter for aged people and as rehabilitation; Bioengineering and materials technology as applied to the decontamination against environmental problems; Biosensors, bioreactors, bioprocess instrumentation and control system; Application to food engineering; Standardization problems on biomaterials and related products; Assessment of reliability and safety of biomedical materials and man-machine systems; and Product liability of biomaterials and related products.
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