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Erschienen in: Journal of Echocardiography 4/2017

10.08.2017 | Original Investigation

The analysis of mitral annular disjunction detected by echocardiography and comparison with previously reported pathological data

verfasst von: Toshiko Konda, Tomoko Tani, Naoko Suganuma, Hitomi Nakamura, Toshiaki Sumida, Yoko Fujii, Junichi Kawai, Takeshi Kitai, Kitae Kim, Shuichiro Kaji, Yutaka Furukawa

Erschienen in: Journal of Echocardiography | Ausgabe 4/2017

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Abstract

Background

Mitral annular disjunction is a structural abnormality of the mitral annulus fibrosus and is pathologically defined by a separation between the atrial wall–mitral valve junction and the left ventricular attachment. Mitral annular disjunction can cause hypermobility of the mitral valve apparatus and is often associated with mitral valve prolapse (MVP). The aim of this study was to investigate the frequency and characteristics of mitral annular disjunction in the patients referred to an echocardiography laboratory and to compare these with previously reported pathological data.

Methods and results

We retrospectively studied 1439 patients (mean age 65 ± 17 years, 58% male) referred to our echocardiography laboratory from 6 January 2014 to 31 March 2014. The echocardiographic parameters were compared between the patients with and without mitral annular disjunction. There were 125 cases (8.7%) with mitral annular disjunction, of which 15 (12%) also had MVP. The number of MVP patients in the group with mitral annular disjunction was significantly larger than in the group without mitral annular disjunction (p < 0.0001). The grade of mitral regurgitation was not significantly different between the two groups.

Conclusions

Mitral annular disjunction was detected not only in patients with a myxomatous mitral valve but also in normal cases. The number of MVPs was significantly larger in patients with mitral annular disjunction than patients without mitral annular disjunction. Further investigation is needed to clarify the clinical significance of the mitral annular disjunction detected by routine echocardiography.
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Metadaten
Titel
The analysis of mitral annular disjunction detected by echocardiography and comparison with previously reported pathological data
verfasst von
Toshiko Konda
Tomoko Tani
Naoko Suganuma
Hitomi Nakamura
Toshiaki Sumida
Yoko Fujii
Junichi Kawai
Takeshi Kitai
Kitae Kim
Shuichiro Kaji
Yutaka Furukawa
Publikationsdatum
10.08.2017
Verlag
Springer Japan
Erschienen in
Journal of Echocardiography / Ausgabe 4/2017
Print ISSN: 1349-0222
Elektronische ISSN: 1880-344X
DOI
https://doi.org/10.1007/s12574-017-0349-1

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