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Multiscale models of the hybrid palliation for hypoplastic left heart syndrome
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Multiscale models of the hybrid palliation for hypoplastic left heart syndrome
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Journal Article
Multiscale models of the hybrid palliation for hypoplastic left heart syndrome
2011
Overview
A less-invasive procedure that combines interventional stent placement in the ductus arteriosus and surgical banding of the branch pulmonary arteries has been recently introduced in the treatment of the hypoplastic left heart syndrome (HLHS). The hemodynamic behaviour of this hybrid approach has not been examined before in a mathematical model. In this study, a mathematical model of the hybrid procedure for HLHS is described, applying a multiscale approach that couples 3D models of the area of the surgical operation and lumped parameter models of the remaining circulation. The effects of various degrees of pulmonary banding and different stent sizes inserted in the ductus arteriosus on pulmonary–systemic flow ratio, cardiac output and oxygen delivery were assessed. Computational results suggest that balanced systemic and pulmonary blood flow and optimal systemic oxygen delivery are sensitive to the degree of pulmonary arterial banding and not to the size of the ductal stent.
Publisher
Elsevier Ltd,Elsevier,Elsevier Limited
Subject
/ Biological and medical sciences
/ Computerized, statistical medical data processing and models in biomedicine
/ Diseases of the cardiovascular system
/ Heart
/ Humans
/ Hypoplastic Left Heart Syndrome - physiopathology
/ Hypoplastic Left Heart Syndrome - surgery
/ Physical Medicine and Rehabilitation
/ Stents
/ Surgery (general aspects). Transplantations, organ and tissue grafts. Graft diseases
