Abstract
To quantitatively analyze the aerodynamic changes in patient's trachea after the resection operation of hyperplastic granulation tissue, computational fluid dynamic (CFD) method was utilized to perform the simulation. Firstly, three dimensional finite element model of the patient’s trachea before and after surgery were reconstructed based on CT images; secondly, the numerical simulation based on CFD method was performed to investigate the changes in aerodynamic changes in patient's trachea after excision. Results indicated that the dyspnea symptom was largely alleviated after the removal surgery, the abnormal morphology was obviously improved and the resistance of trachea was decreased significantly. Present research also demonstrates that CFD methods can be used to quantitatively evaluate the postoperative effects of the granulation tissue resection operation.
Highlights
The hyperplasia of granulation tissue is one of the most common complications of airway incision surgeries
The numerical model was imported into ANSYS ICEM for meshing
The airflow velocity variations were used as the inlet boundary condition and the zero pressure was used as the outlet boundary condition
Summary
The hyperplasia of granulation tissue is one of the most common complications of airway incision surgeries. It can lead to the suffocation of patients or even death [Grillo, Donahue and Mathisen (1995)]. The granulation tissue is clinically removed mainly by means of laser elimination or radiofrequency burning. The quantitative evaluation method before resection operation is still lacking for the reason of limited factors such as examination methods [Mukhopadhyay, Farver, Vaszar et al (2012)].
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