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Computer simulation of flow and mixing at the duodenal stump after gastric resection |
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| Authors: | Nenad Filipovic Aleksandar Cvetkovic Velibor Isailovic Zoran Matovic Mirko Rosic Milos Kojic |
| Affiliation: | 1. Faculty of Mechanical Engineering,University of Kragujevac, Kragujevac 34000, Serbia;Research and Development Center for Bioengineering, Kragujevac 34000,Serbia;Harvard School of Public Health, Boston, MA 02115, United States 2. Faculty of Mechanical Engineering,University of Kragujevac, Kragujevac 34000, Serbia;Clinical Center Kragujevac, Kragujevac 34000, Serbia 3. Faculty of Mechanical Engineering,University of Kragujevac, Kragujevac 34000, Serbia;Research and Development Center for Bioengineering, Kragujevac 34000,Serbia 4. Faculty of Mechanical Engineering,University of Kragujevac, Kragujevac 34000, Serbia;Medical Faculty Kragujevac, Kragujevac 34000,Serbia 5. Research and Development Center for Bioengineering, Kragujevac 34000,Serbia;Harvard School of Public Health, Boston, MA 02115, United States;The University of Texas Health Science Center,Houston TX77030, United States |
| Abstract: | AIM: To investigate the flow and mixing at the duodenal stump after gastric resection, a computer simulation was implemented.METHODS: Using the finite element method, two different Billroth II procedure cases (A and B) were modeled. Case A was defined with a shorter and almost straight duodenal section, while case B has a much longer and curved duodenal section. Velocity, pressure and food concentration distribution were determined and the numerical results were compared with experimental observations.RESULTS: The pressure distribution obtained by numerical simulation was in the range of the recorded experimental results. Case A had a more favorable pressure distribution in comparison with case B. However, case B had better performance in terms of food transport because of more continual food distribution, as well as better emptying of the duodenal section.CONCLUSION: This study offers insight into the transport process within the duodenal stump section after surgical intervention, which can be useful for future patient-specific predictions of a surgical outcome. |
| Keywords: | Computer simulation Gastric resection Duodenal stump Pressure distribution |
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| 点击此处可从《World journal of gastroenterology : WJG》浏览原始摘要信息 | |