Intra-Operative Vector Flow Imaging Using Ultrasound of the Ascending Aorta among 40 Patients with Normal, Stenotic and Replaced Aortic Valves

Kristoffer Lindskov Hansen; Hasse Møller-Sørensen; Jesper Kjaergaard; Maiken Brit Jensen; Jens Teglgaard Lund; Mads Møller Pedersen; Theis Lange; Jørgen Arendt Jensen; Michael Bachmann Nielsen

doi:10.1016/j.ultrasmedbio.2016.06.009

Intra-Operative Vector Flow Imaging Using Ultrasound of the Ascending Aorta among 40 Patients with Normal, Stenotic and Replaced Aortic Valves

Kristoffer Lindskov Hansen, Hasse Møller-Sørensen, Jesper Kjaergaard, Maiken Brit Jensen, Jens Teglgaard Lund, Mads Møller Pedersen, Theis Lange, Jørgen Arendt Jensen, Michael Bachmann Nielsen

27 Citations (Scopus)

Abstract

Stenosis of the aortic valve gives rise to more complex blood flows with increased velocities. The angle-independent vector flow ultrasound technique transverse oscillation was employed intra-operatively on the ascending aorta of (I) 20 patients with a healthy aortic valve and 20 patients with aortic stenosis before (IIa) and after (IIb) valve replacement. The results indicate that aortic stenosis increased flow complexity (p < 0.0001), induced systolic backflow (p < 0.003) and reduced systolic jet width (p < 0.0001). After valve replacement, the systolic backflow and jet width were normalized (p < 0.52 and p < 0.22), but flow complexity was not (p < 0.0001). Flow complexity (p < 0.0001), systolic jet width (p < 0.0001) and systolic backflow (p < 0.001) were associated with peak systolic velocity. The study found that aortic stenosis changes blood flow in the ascending aorta and valve replacement corrects some of these changes. Transverse oscillation may be useful for assessment of aortic stenosis and optimization of valve surgery.

Original language	English
Journal	Ultrasound in Medicine & Biology
Volume	42
Issue number	10
Pages (from-to)	2414-2422
Number of pages	9
ISSN	0301-5629
DOIs	https://doi.org/10.1016/j.ultrasmedbio.2016.06.009
Publication status	Published - Oct 2016

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Journal Article

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10.1016/j.ultrasmedbio.2016.06.009

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Hansen, K. L., Møller-Sørensen, H., Kjaergaard, J., Jensen, M. B., Lund, J. T., Pedersen, M. M., Lange, T., Jensen, J. A., & Nielsen, M. B. (2016). Intra-Operative Vector Flow Imaging Using Ultrasound of the Ascending Aorta among 40 Patients with Normal, Stenotic and Replaced Aortic Valves. Ultrasound in Medicine & Biology, 42(10), 2414-2422. https://doi.org/10.1016/j.ultrasmedbio.2016.06.009

Intra-Operative Vector Flow Imaging Using Ultrasound of the Ascending Aorta among 40 Patients with Normal, Stenotic and Replaced Aortic Valves. / Hansen, Kristoffer Lindskov; Møller-Sørensen, Hasse; Kjaergaard, Jesper et al.

In: Ultrasound in Medicine & Biology, Vol. 42, No. 10, 10.2016, p. 2414-2422.

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

Hansen, KL, Møller-Sørensen, H, Kjaergaard, J, Jensen, MB, Lund, JT, Pedersen, MM, Lange, T, Jensen, JA & Nielsen, MB 2016, 'Intra-Operative Vector Flow Imaging Using Ultrasound of the Ascending Aorta among 40 Patients with Normal, Stenotic and Replaced Aortic Valves', Ultrasound in Medicine & Biology, vol. 42, no. 10, pp. 2414-2422. https://doi.org/10.1016/j.ultrasmedbio.2016.06.009

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abstract = "Stenosis of the aortic valve gives rise to more complex blood flows with increased velocities. The angle-independent vector flow ultrasound technique transverse oscillation was employed intra-operatively on the ascending aorta of (I) 20 patients with a healthy aortic valve and 20 patients with aortic stenosis before (IIa) and after (IIb) valve replacement. The results indicate that aortic stenosis increased flow complexity (p < 0.0001), induced systolic backflow (p < 0.003) and reduced systolic jet width (p < 0.0001). After valve replacement, the systolic backflow and jet width were normalized (p < 0.52 and p < 0.22), but flow complexity was not (p < 0.0001). Flow complexity (p < 0.0001), systolic jet width (p < 0.0001) and systolic backflow (p < 0.001) were associated with peak systolic velocity. The study found that aortic stenosis changes blood flow in the ascending aorta and valve replacement corrects some of these changes. Transverse oscillation may be useful for assessment of aortic stenosis and optimization of valve surgery.",

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AU - Hansen, Kristoffer Lindskov

AU - Møller-Sørensen, Hasse

AU - Kjaergaard, Jesper

AU - Jensen, Maiken Brit

AU - Lund, Jens Teglgaard

AU - Pedersen, Mads Møller

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AB - Stenosis of the aortic valve gives rise to more complex blood flows with increased velocities. The angle-independent vector flow ultrasound technique transverse oscillation was employed intra-operatively on the ascending aorta of (I) 20 patients with a healthy aortic valve and 20 patients with aortic stenosis before (IIa) and after (IIb) valve replacement. The results indicate that aortic stenosis increased flow complexity (p < 0.0001), induced systolic backflow (p < 0.003) and reduced systolic jet width (p < 0.0001). After valve replacement, the systolic backflow and jet width were normalized (p < 0.52 and p < 0.22), but flow complexity was not (p < 0.0001). Flow complexity (p < 0.0001), systolic jet width (p < 0.0001) and systolic backflow (p < 0.001) were associated with peak systolic velocity. The study found that aortic stenosis changes blood flow in the ascending aorta and valve replacement corrects some of these changes. Transverse oscillation may be useful for assessment of aortic stenosis and optimization of valve surgery.

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Intra-Operative Vector Flow Imaging Using Ultrasound of the Ascending Aorta among 40 Patients with Normal, Stenotic and Replaced Aortic Valves

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