检索结果-南通市图书馆

A Computational Analysis of the Influence of Anastomosis Angle on Stenosis-Prone Locations during Radio-Cephalic Arteriovenous Fistula Maturation

引用

Journal of Biomedical Science and Engineering 2023年第6期16卷 81-93页

作者： Yang Yang Pascale Kulisa Benyebka Bou-Saïd Mahmoud El Hajem Serge Simoens nellie della schiava CNRS INSA de Lyon LaMCoS University of Lyon Villeurbanne France INSA Lyon CNRS Ecole Centrale de Lyon Univ Claude Bernard Lyon 1 LMFA University of Lyon Villeurbanne France State Key Laboratory of Solidification Processing Center of Advanced Lubrication and Seal Materials Northwestern Poytechnical University Xi’an China CNRS Ecole Centrale de Lyon INSA Lyon Univ Claude Bernard Lyon 1 LMFA University of Lyon Ecully France Department of Vascular Surgery Hospices Civils de Lyon Lyon France

In dialysis treatment, the radio-cephalic arteriovenous fistula (RCAVF) is a commonly used fistula, yet its low maturation rate remains a challenge. To enhance surgical outcomes, the relationship between stenosis-prone locations and RCAVF anastomosis angle is studied during maturation by developing two sets of RCAVF models for early (non-mature) and mature RCAVFs at five anastomosis angles. The impact of hemodynamics and wall shear stress (WSS) is examined to determine optimal anastomotic angles. Results indicate that acute angles produce more physiological WSS distributions and fewer disturbed regions, with early stenosis-prone regions located near the anastomosis that shift to the bending venous segment during remodeling. A pilot study comparing clinical and numerical results is conducted for validation.

关键词： Radio-Cephalic Arteriovenous Fistula (RCAVF) Anastomosis Angle Maturation Wall Shear Stress Distribution Stenosis-Prone Locations

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Optimization of Maturation of Radio-Cephalic Arteriovenous Fistula Using a Model Relating Energy Loss Rate and Vascular Geometric Parameters

引用

Journal of Biomedical Science and Engineering 2021年第6期14卷 271-287页

作者： Yang Yang nellie della schiava Pascale Kulisa Mahmoud El Hajem Benyebka Bou-Saïd Serge Simoëns Patrick Lermusiaux Univ Lyon CNRS INSA de Lyon LaMCoS UMR5259 Villeurbanne France Department of Vascular Surgery Hospices Civils de Lyon Lyon France Univ Lyon CNRS Ecole Centrale de Lyon INSA Lyon Univ Claude Bernard Lyon 1 LMFA UMR5509 69130 Ecully France Univ Lyon INSA Lyon CNRS Ecole Centrale de Lyon Univ Claude Bernard Lyon 1 LMFA UMR5509 69621 Villeurbanne France

The main reason for the early failure of radio-cephalic arteriovenous fistula (RCAVF) is non-maturity, which means that the blood flow rate in the fistula cannot increase to the expected value for dialysis. From a mechanical perspective, the vascular resistance at the artificially designed anastomosis causes an energy loss that affects blood flow rate growth and leads to early failure. This research studied how to maximize the RCAVF maturity and primary patency by controlling the energy loss rate. We theoretically analyzed and derived a model that evaluates the energy loss rate Eavf in RCAVF as a function of its blood vessel geometric parameters (GPs) for given flow rates. There was an aggregate of five controllable GPs in RCAVF: radial artery diameter (Dra), cephalic vein diameter (Dcv), blood vessel distance between artery and vein (h), anastomotic diameter (Da), and anastomotic angle (θ). Through this analysis, it was found that Eavf was inversely proportional to Dra, Dcv, Da, and θ, whereas proportional to h. Therefore, we recommended surgeons choose the vessels with large diameters, close distance, and increase the diameter and angle of the anastomosis to decrease the early failure of RCAVF. Simultaneously, we could explain the results of many clinical empiricisms with our formula. We found that increasing Dcv and θ was more significant in reducing Eavf than increasing Dra and Da. Based on our model, we could define two critical energy loss rates (CELa, CELb) to help surgeons evaluate

关键词： Hemodialysis Radio-Cephalic Arteriovenous Fistula (RCAVF) Critical Energy Loss Rate (CEL) Vessel Geometric Parameters Maturity

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

A Computational Analysis of the Influence of Anastomosis Angle on Stenosis-Prone Locations during Radio-Cephalic Arteriovenous Fistula Maturation

引用

Journal of Biomedical Science and Engineering（生物医学工程） 2023年第6期

作者： Yang Yang Pascale Kulisa Benyebka Bou-Saïd Mahmoud El Hajem Serge Simoens nellie della schiava

来源：博看期刊评论

在线全文

博看期刊

学校读者我要写书评

暂无评论

Optimization of Maturation of Radio-Cephalic Arteriovenous Fistula Using a Model Relating Energy Loss Rate and Vascular Geometric Parameters

引用

Journal of Biomedical Science and Engineering（生物医学工程） 2021年第6期

作者： Yang Yang nellie della schiava Pascale Kulisa Mahmoud El Hajem Benyebka Bou-Saïd Serge Simoëns Patrick Lermusiaux

来源：评论

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：