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Ascending aorta dilatation in patients with bicuspid aortic valve stenosis: a prospective CMR study

  • Cardiac
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Abstract

Background

The aim of this study was to evaluate the natural progression of aortic dilatation and its association with aortic valve stenosis (AoS) in patients with bicuspid aortic valve (BAV).

Methods

Prospective study of aorta dilatation in patients with BAV and AoS using cardiac magnetic resonance (CMR). Aortic root, ascending aorta, aortic peak velocity, left ventricular systolic and diastolic function and mass were assessed at baseline and at 3-year follow-up.

Results

Of the 33 enrolled patients, 5 needed surgery, while 28 patients (17 male; mean age: 31 ± 8 years) completed the study. Aortic diameters significantly increased at the aortic annulus, sinus of Valsalva and tubular ascending aorta levels (P < 0.050). The number of patients with dilated tubular ascending aortas increased from 32 % to 43 %. No significant increase in sino-tubular junction diameter was observed. Aortic peak velocity, ejection fraction and myocardial mass significantly increased while the early/late filling ratio significantly decreased at follow-up (P < 0.050). The progression rate of the ascending aorta diameter correlated weakly with the aortic peak velocity at baseline (R 2 = 0.16, P = 0.040).

Conclusion

BAV patients with AoS showed a progressive increase of aortic diameters with maximal expression at the level of the tubular ascending aorta. The progression of aortic dilatation correlated weakly with the severity of AoS.

Key Points

• Bicuspid aortic valve (BAV) is the most common congenital heart defect.

• BAV patients have an increased risk of developing aortic valve stenosis (AoS).

• BAV patients have an increased risk of developing thoracic aorta dilatation.

• The severity of aortic stenosis is correlated to the progression of aortic dilatation.

• Cardiac magnetic resonance can rapidly assess patients with a bicuspid aortic valve.

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Authors and Affiliations

  1. Department of Cardiology, Erasmus University Medical Center, ‘s Gravendijkwal 230, 3015CE, Rotterdam, The Netherlands

    Alexia Rossi, Denise van der Linde, Sing Chien Yap, Sharon Kirschbaum, Tirza Springeling, Maarten Witsenburg, Judith Cuypers, Robert-Jan van Geuns & Jolien W. Roos-Hesselink

  2. Department of Radiology, Erasmus University Medical Center, ‘s Gravendijkwal 230, 3015CE, Rotterdam, The Netherlands

    Alexia Rossi, Tirza Springeling, Adriaan Moelker, Gabriel P. Krestin & Robert-Jan van Geuns

  3. Department of Cardiology, University Medical Center Nijmegen, Nijmegen, The Netherlands

    Arie van Dijk

  4. Department of Obstetrics, Chelsea and Westminster Hospital, London, UK

    Mark Johnson

  5. Department of Cardiology, Hospital of Lithuanian University of Health Sciences, Kaunas, Lithuania

    Thomas Lapinskas

Authors
  1. Alexia Rossi
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  2. Denise van der Linde
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  3. Sing Chien Yap
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  4. Thomas Lapinskas
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  5. Sharon Kirschbaum
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  13. Robert-Jan van Geuns
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  14. Jolien W. Roos-Hesselink
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Correspondence to Alexia Rossi.

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Rossi, A., van der Linde, D., Yap, S.C. et al. Ascending aorta dilatation in patients with bicuspid aortic valve stenosis: a prospective CMR study. Eur Radiol 23, 642–649 (2013). https://doi.org/10.1007/s00330-012-2651-7

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  • DOI: https://doi.org/10.1007/s00330-012-2651-7

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