Effect of anastomosis angle on hemodynamic of side-to-end radiocephalic arteriovenous fistula (RCAVF)
Radiocephalic arteriovenous fistula (RCAVF) at wrist is the chosen access for hemodialysis. Most studies describe access complications without considering the effect of the anastomosis angle. In the present investigation, eighteen three-dimensional, simplified models of RCAVF were used to analyze th...
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| Format: | Article |
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2012
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| author | Wan Hassan, Wan Anuar Osman, Kahar Abdul Kadir, Mohammed Rafiq Wan Abdullah, Wan Ahmad Kamil Haron, Juhara Ngali, Mohd. Zamani |
| author_facet | Wan Hassan, Wan Anuar Osman, Kahar Abdul Kadir, Mohammed Rafiq Wan Abdullah, Wan Ahmad Kamil Haron, Juhara Ngali, Mohd. Zamani |
| author_sort | Wan Hassan, Wan Anuar |
| collection | ePrints |
| description | Radiocephalic arteriovenous fistula (RCAVF) at wrist is the chosen access for hemodialysis. Most studies describe access complications without considering the effect of the anastomosis angle. In the present investigation, eighteen three-dimensional, simplified models of RCAVF were used to analyze the hemodynamic effect of anastomosis angle under fixed flow rate of 900 ml/min, corresponding to Reynolds number 950. EFD. Lab software was used in the flow simulation with steady flow conditions. The results show that high pressure drop was observed for RCAVF with smaller anastomosis angle. However, for cases with anastomosis angle larger than 45°, pressure drop became relatively constant. The results also show that large vortices appeared in cases with angle smaller than 30°. For cases with angle larger than 60°, low flow zone appeared at the inner wall that may lead to promotion of intimal thickening and formation of stenosis. Overall, for average flowrate, it is recommended that anastomosis angle should be maintained between 45° and 60° to minimize adverse effects. |
| first_indexed | 2024-03-05T19:21:13Z |
| format | Article |
| id | utm.eprints-46843 |
| institution | Universiti Teknologi Malaysia - ePrints |
| last_indexed | 2024-03-05T19:21:13Z |
| publishDate | 2012 |
| record_format | dspace |
| spelling | utm.eprints-468432017-09-21T05:03:11Z http://eprints.utm.my/46843/ Effect of anastomosis angle on hemodynamic of side-to-end radiocephalic arteriovenous fistula (RCAVF) Wan Hassan, Wan Anuar Osman, Kahar Abdul Kadir, Mohammed Rafiq Wan Abdullah, Wan Ahmad Kamil Haron, Juhara Ngali, Mohd. Zamani TL Motor vehicles. Aeronautics. Astronautics Radiocephalic arteriovenous fistula (RCAVF) at wrist is the chosen access for hemodialysis. Most studies describe access complications without considering the effect of the anastomosis angle. In the present investigation, eighteen three-dimensional, simplified models of RCAVF were used to analyze the hemodynamic effect of anastomosis angle under fixed flow rate of 900 ml/min, corresponding to Reynolds number 950. EFD. Lab software was used in the flow simulation with steady flow conditions. The results show that high pressure drop was observed for RCAVF with smaller anastomosis angle. However, for cases with anastomosis angle larger than 45°, pressure drop became relatively constant. The results also show that large vortices appeared in cases with angle smaller than 30°. For cases with angle larger than 60°, low flow zone appeared at the inner wall that may lead to promotion of intimal thickening and formation of stenosis. Overall, for average flowrate, it is recommended that anastomosis angle should be maintained between 45° and 60° to minimize adverse effects. 2012 Article PeerReviewed Wan Hassan, Wan Anuar and Osman, Kahar and Abdul Kadir, Mohammed Rafiq and Wan Abdullah, Wan Ahmad Kamil and Haron, Juhara and Ngali, Mohd. Zamani (2012) Effect of anastomosis angle on hemodynamic of side-to-end radiocephalic arteriovenous fistula (RCAVF). AIP Conference Proceedings, 1440 . pp. 665-670. ISSN 0094-243X http://dx.doi.org/10.1063/1.4704276 |
| spellingShingle | TL Motor vehicles. Aeronautics. Astronautics Wan Hassan, Wan Anuar Osman, Kahar Abdul Kadir, Mohammed Rafiq Wan Abdullah, Wan Ahmad Kamil Haron, Juhara Ngali, Mohd. Zamani Effect of anastomosis angle on hemodynamic of side-to-end radiocephalic arteriovenous fistula (RCAVF) |
| title | Effect of anastomosis angle on hemodynamic of side-to-end radiocephalic arteriovenous fistula (RCAVF) |
| title_full | Effect of anastomosis angle on hemodynamic of side-to-end radiocephalic arteriovenous fistula (RCAVF) |
| title_fullStr | Effect of anastomosis angle on hemodynamic of side-to-end radiocephalic arteriovenous fistula (RCAVF) |
| title_full_unstemmed | Effect of anastomosis angle on hemodynamic of side-to-end radiocephalic arteriovenous fistula (RCAVF) |
| title_short | Effect of anastomosis angle on hemodynamic of side-to-end radiocephalic arteriovenous fistula (RCAVF) |
| title_sort | effect of anastomosis angle on hemodynamic of side to end radiocephalic arteriovenous fistula rcavf |
| topic | TL Motor vehicles. Aeronautics. Astronautics |
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