Title :
Long-term hemodynamic effects of artery banding on patient-specific pulmonary flow
Author :
Weimin Zhang ; Jinlong Liu ; Qi Sun ; Haifa Hong ; Qian Wang ; Lu Han ; Le Mao ; Qin Yan ; Xiongqi Peng
Author_Institution :
Sch. of Med., Shanghai Children´s Med. Center, Dept. of Cardiothoracic Surg., Shanghai Jiao Tong Univ., Shanghai, China
Abstract :
Pulmonary artery banding (PAB) is a commonly used palliative procedure to restrict excess pulmonary blood in certain congenital heart diseases. However, many associated long-term hemodynamic problems still remain unsolved over the years. In this study, we utilized the method of computational fluid dynamics (CFD) to investigate the hemodynamic effects of PAB on patient-specific pulmonary flow before, 1 year and 2 years after banding. The distribution of total pressure, wall shear stress, streamlines and energy efficiency were calculated. The results indicated a sharp pressure drop at the banding site. Energy efficiency loss decreased greatly as the loosening of PAB, and strong whirling flow was observed in the dilated MPA after banding. The method of CFD can be used to disclose the hemodynamics of PAB.
Keywords :
blood vessels; cardiology; computational fluid dynamics; diseases; flow simulation; haemodynamics; partial differential equations; physiological models; shear deformation; surgery; CFD; MPA dilation; PAB hemodynamic effect; PAB hemodynamics; PAB loosening; banding site pressure drop; computational fluid dynamics; congenital heart disease; energy efficiency calculation; energy efficiency loss reduction; excess pulmonary blood restriction; long-term hemodynamic effect; long-term hemodynamic problem; palliative procedure; patient-specific pulmonary flow; pulmonary artery banding; streamline distribution calculation; time 1 year; time 2 year; total pressure distribution calculation; wall shear stress distribution calculation; whirling flow; Arteries; Computational fluid dynamics; Heart; Hemodynamics; Solid modeling; Surgery; computational fluid dynamics; congenital heart disease; hemodynamics; pulmonary artery banding;
Conference_Titel :
Biomedical Engineering and Informatics (BMEI), 2014 7th International Conference on
Conference_Location :
Dalian
Print_ISBN :
978-1-4799-5837-5
DOI :
10.1109/BMEI.2014.7002817
