Numerical simulation and hemodynamic analysis of the modified Blalock-Taussig shunt

Jinlong Liiu, Qi Sun, Yi Qian, Haifa Hong, Jinfen Liu*

*Corresponding author for this work

    Research output: Chapter in Book/Report/Conference proceedingConference proceeding contributionpeer-review

    8 Citations (Scopus)

    Abstract

    The modified Blalock-Taussig (mB-T) shunt is an effective palliative surgical method in the treatment of cyanotic congenital heart diseases. It increases the pulmonary blood flow through an implanted shunt between systemic and pulmonary arteries. The surgical technique improved over the years. However, it is still a challenge to control appropriate distribution of blood flow through this shunt after this kind of procedure till now. Here, we report on the method of computational fluid dynamics (CFD) for the hemodynamic studies of a patient-specific case after the mB-T shunt. The analysis system that we validated previously in the studies of the Norwood procedure was applied to predict the hemodynamic characteristics in the mB-T hunt area. The real-time velocities derived from Echocardiography measurements and the blood pressure wave reflections from peripheral vessels were utilized as boundary conditions to physiologically capture the blood flow information in the simulation. The local pressure, blood flow distribution and wall shear stress were calculated. The results suggest pressure decreases greatly through the shunt and around 40% of blood flow is distributed from the systemic circulation to pulmonary arteries in one cardiac cycle. These indict computational hemodynamics may be applied in future studies of establishing quantitative standards to evaluate the outcomes of the mB-T shunt and to optimize the implantation of the mB-T shunt in virtual surgeries.

    Original languageEnglish
    Title of host publicationConference proceedings : ... Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society.
    Place of PublicationOsaka, Japan
    PublisherInstitute of Electrical and Electronics Engineers (IEEE)
    Pages707-710
    Number of pages4
    Volume2013
    ISBN (Electronic)9781457702167
    DOIs
    Publication statusPublished - 2013
    Event2013 35th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBC 2013 - Osaka, Japan
    Duration: 3 Jul 20137 Jul 2013

    Other

    Other2013 35th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBC 2013
    CountryJapan
    CityOsaka
    Period3/07/137/07/13

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