Aortic Valve Stenosis Increases Helical Flow and Flow Complexity: A Study of Intra-Operative Cardiac Vector Flow Imaging

Ultrasound in Medicine & Biology
Kristoffer Lindskov HansenMichael Bachmann Nielsen

Abstract

Aortic valve stenosis alters blood flow in the ascending aorta. Using intra-operative vector flow imaging on the ascending aorta, secondary helical flow during peak systole and diastole, as well as flow complexity of primary flow during systole, were investigated in patients with normal, stenotic and replaced aortic valves. Peak systolic helical flow, diastolic helical flow and flow complexity during systole differed between the groups (p < 0.0001), and correlated to peak systolic velocity (R = 0.94, 0.87 and 0.88, respectively). The study indicates that aortic valve stenosis increases helical flow and flow complexity, which are measurable with vector flow imaging. For assessment of aortic stenosis and optimization of valve surgery, vector flow imaging may be useful.

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Citations

May 8, 2018·IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control·Jacob Bjerring OlesenJorgen Arendt Jensen
Feb 9, 2019·Medical Physics·Billy Y S YiuAlfred C H Yu
Mar 18, 2019·Interactive Cardiovascular and Thoracic Surgery·Satoshi AsadaHitoshi Yaku
Jun 25, 2020·Diagnostics·Andreas Hjelm BrandtKristoffer Lindskov Hansen
Oct 31, 2019·Progress in Pediatric Cardiology·R Thomas CollinsMorten O Jensen

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