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

Kristoffer Lindskov Hansen; Hasse Møller-Sørensen; Jesper Kjaergaard; Maiken Brit Jensen; Jørgen Arendt Jensen; Michael Bachmann Nielsen

doi:10.1016/j.ultrasmedbio.2017.03.018

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

Kristoffer Lindskov Hansen, Hasse Møller-Sørensen, Jesper Kjaergaard, Maiken Brit Jensen, Jørgen Arendt Jensen, Michael Bachmann Nielsen

Department of Clinical Medicine

26 Citations (Scopus)

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.

Original language	English
Journal	Ultrasound in Medicine & Biology
Volume	43
Issue number	8
Pages (from-to)	1607-1617
ISSN	0301-5629
DOIs	https://doi.org/10.1016/j.ultrasmedbio.2017.03.018
Publication status	Published - Aug 2017

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Aortic Valve Stenosis Increases Helical Flow and Flow Complexity : A Study of Intra-Operative Cardiac Vector Flow Imaging. / Hansen, Kristoffer Lindskov; Møller-Sørensen, Hasse; Kjaergaard, Jesper et al.

In: Ultrasound in Medicine & Biology, Vol. 43, No. 8, 08.2017, p. 1607-1617.

Research output: Contribution to journal › Journal article › Research › peer-review

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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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AU - Kjaergaard, Jesper

AU - Jensen, Maiken Brit

AU - Jensen, Jørgen Arendt

AU - Nielsen, Michael Bachmann

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N2 - 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.

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

Abstract

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