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. 2022 Sep;37(9):2734-2737.
doi: 10.1111/jocs.16683. Epub 2022 Jun 11.

A novel technique to quantify aortic valve annulus deformation: A pilot study

Theresa Holst  1   2 , Johannes Petersen  1 , Gerhard Adam  3 , Hermann Reichenspurner  1 , Evaldas Girdauskas  1   2 , Enver Tahir  3
Affiliations

A novel technique to quantify aortic valve annulus deformation: A pilot study

Theresa Holst et al. J Card Surg. 2022 Sep.

Abstract

Objectives: We evaluated the potential of cardiac magnetic resonance (CMR)-derived strain to assess aortic valve (AV) annulus deformation during the cardiac cycle in regurgitant and well-functioning AVs.

Methods: Four patients with severe aortic regurgitation and seven healthy controls underwent CMR. Assessment of longitudinal strain was performed by hypothesizing the AV annulus would be the left ventricle in long-axis orientation. Longitudinal strain of the segments belonging to the muscular and fibrous AV annulus was weighted and averaged to obtain regional values (RLS).

Results: Comparison of RLS between regurgitant and well-functioning AVs showed a considerably different deformation of the muscular AV annulus (i.e., median RLS: 4.18 % [patients] vs. -10.41 % [controls], p = .024). The fibrous AV annulus demonstrated comparable deformational changes in both groups.

Conclusion: CMR-derived strain allows for quantification of AV annulus deformation during the cardiac cycle and shows an altered RLS in the muscular AV annulus in patients with severe aortic regurgitation.

Keywords: aortic regurgitation; aortic valve repair; cardiac magnetic resonance imaging; feature-tracking strain analysis.

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References

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