In vitro study of the axial flow velocity patterns in pulmonary valvular stenosis
H. Sung, A. P. Yoganathan
1988
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Quality indicators
Journal
Proceedings of the Annual International Conference of the IEEE Engineering in Medicine and Biology Society
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Key Takeaway Key Takeaway: Increasing degrees of valvular stenosis significantly alter flow velocity patterns in the main and left branches of the pulmonary artery, while the right branch shows minimal change.
Abstract
The authors characterize the axial flow velocity patterns in an in vitro model of a human adult pulmonary artery with varying degrees of valvular stenosis. A two-dimensional laser Doppler anemometer (LDA) system was used to map the velocity fields in the main (MPA), left (LPA), and right (RPA) branches of the pulmonary artery model. The study was conducted using the Georgia Tech right heart pulse duplicator system. It was found that the flow velocity patterns in the MPA and LPA change dramatically with increasing degrees of valvular stenosis. However, in the RPA, they do not change much with varying degrees of valvular stenosis.<