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Published in: Journal of Cardiovascular Magnetic Resonance 1/2017

Open Access 01-12-2017 | Research

Proximal aortic stiffening in Turner patients may be present before dilation can be detected: a segmental functional MRI study

Authors: Daniel G. H. Devos, Katya De Groote, Danilo Babin, Laurent Demulier, Yves Taeymans, Jos J. Westenberg, Luc Van Bortel, Patrick Segers, Eric Achten, Jean De Schepper, Ernst Rietzschel

Published in: Journal of Cardiovascular Magnetic Resonance | Issue 1/2017

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Abstract

Background

To study segmental structural and functional aortic properties in Turner syndrome (TS) patients. Aortic abnormalities contribute to increased morbidity and mortality of women with Turner syndrome. Cardiovascular magnetic resonance (CMR) allows segmental study of aortic elastic properties.

Method

We performed Pulse Wave Velocity (PWV) and distensibility measurements using CMR of the thoracic and abdominal aorta in 55 TS-patients, aged 13-59y, and in a control population (n = 38;12-58y). We investigated the contribution of TS on aortic stiffness in our entire cohort, in bicuspid (BAV) versus tricuspid (TAV) aortic valve-morphology subgroups, and in the younger and older subgroups.

Results

Differences in aortic properties were only seen at the most proximal aortic level. BAV Turner patients had significantly higher PWV, compared to TAV Turner (p = 0.014), who in turn had significantly higher PWV compared to controls (p = 0.010). BAV Turner patients had significantly larger ascending aortic (AA) luminal area and lower AA distensibility compared to both controls (all p < 0.01) and TAV Turner patients. TAV Turner had similar AA luminal areas and AA distensibility compared to Controls. Functional changes are present in younger and older Turner subjects, whereas ascending aortic dilation is prominent in older Turner patients. Clinically relevant dilatation (TAV and BAV) was associated with reduced distensibility.

Conclusion

Aortic stiffening and dilation in TS affects the proximal aorta, and is more pronounced, although not exclusively, in BAV TS patients.
Functional abnormalities are present at an early age, suggesting an aortic wall disease inherent to the TS. Whether this increased stiffness at young age can predict later dilatation needs to be studied longitudinally.
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Metadata
Title
Proximal aortic stiffening in Turner patients may be present before dilation can be detected: a segmental functional MRI study
Authors
Daniel G. H. Devos
Katya De Groote
Danilo Babin
Laurent Demulier
Yves Taeymans
Jos J. Westenberg
Luc Van Bortel
Patrick Segers
Eric Achten
Jean De Schepper
Ernst Rietzschel
Publication date
01-12-2017
Publisher
BioMed Central
Published in
Journal of Cardiovascular Magnetic Resonance / Issue 1/2017
Electronic ISSN: 1532-429X
DOI
https://doi.org/10.1186/s12968-017-0331-0

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