Title :
Is fluid shear stress an indicator of total cavopulmonary connection efficiency?
Author :
Ensley, Ann E. ; Healy, Timothy M. ; Ramuzat, Agnes ; Lucas, Carol ; Yoganathan, Ajit P.
Author_Institution :
Sch. of Biomed. & Chem. Eng., Georgia Inst. of Technol., Atlanta, GA, USA
Abstract :
The total cavopulmonary connection (TCPC) is a surgical palliation for single ventricle congenital heart disease which bypasses the right heart. With only one functioning pump for the entire circulatory system, hemodynamic efficiency in the TCPC is an important concern. Energy losses across the connection can be reduced by improving the geometry of the connection and may directly correlate with the fluid shear stresses in the TCPC. Three prototype models of the TCPC were investigated with particle image velocimetry and the resulting fluid shear stresses were compared with previous energy loss data. There was a positive correlation between total shear stress and experimental pressure derived energy loss. This indicated that future assessment of TCPC efficiency may benefit from a complete analysis of fluid shear stresses
Keywords :
blood vessels; haemodynamics; laser applications in medicine; laser velocimetry; lung; physiological models; surgery; anastomosis; fluid shear stresses; hemodynamic efficiency; particle image velocimetry; pressure derived energy loss; prototype models; reduced energy losses; single ventricle congenital heart disease; surgical palliation; total cavopulmonary connection efficiency; total shear stress; Cardiac disease; Circulatory system; Energy loss; Geometry; Heart; Hemodynamics; Prototypes; Pumps; Stress; Surgery;
Conference_Titel :
[Engineering in Medicine and Biology, 1999. 21st Annual Conference and the 1999 Annual Fall Meetring of the Biomedical Engineering Society] BMES/EMBS Conference, 1999. Proceedings of the First Joint
Conference_Location :
Atlanta, GA
Print_ISBN :
0-7803-5674-8
DOI :
10.1109/IEMBS.1999.802264
