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Tricuspid Annulus Disjunction: Novel Findings by Cardiac Magnetic Resonance in Patients With Mitral Annulus Disjunction

JACC. Cardiovascular imaging, 2021-08 [Peer Reviewed Journal]

info:eu-repo/semantics/openAccess ;ISSN: 1936-878X ;EISSN: 1876-7591 ;DOI: 10.1016/j.jcmg.2021.01.028

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  • Title:
    Tricuspid Annulus Disjunction: Novel Findings by Cardiac Magnetic Resonance in Patients With Mitral Annulus Disjunction
  • Author: Aabel, Eivind Westrum ; Chivulescu, Ana Monica ; Dejgaard, Lars ; Ribe, Margareth ; Gjertsen, Erik ; Hopp, Einar ; Hunt, Tove Elizabeth Frances ; Lie, Øyvind Haugen ; Haugaa, Kristina
  • Is Part Of: JACC. Cardiovascular imaging, 2021-08
  • Description: Objectives This study aimed to assess whether patients with MAD also have disjunction of the tricuspid annulus. Background Mitral annulus disjunction (MAD) is an abnormal atrial displacement of the mitral annulus. Whether the disjunction extends to the right side of the heart is not known. Methods In a cohort of patients with MAD, we assessed the presence of tricuspid annulus disjunction (TAD) with the use of cardiac magnetic resonance. We explored the associations between TAD and MAD characteristics and the relationship to ventricular arrhythmias (nonsustained/sustained ventricular tachycardias and aborted cardiac arrest). Results We included 84 patients (mean age: 48 ± 16 years; 63% female). We observed TAD in 42 (50%). Patients with TAD were older (age 52 ± 16 years vs. 43 ± 15 years; p = 0.02), had greater circumferential extent of MAD (164 ± 57° vs. 115 ± 58°; p = 0.002), greater maximum longitudinal MAD distance (9.4 ± 2.9 mm vs. 6.2 ± 2.8 mm; p < 0.001), and more frequent mitral valve prolapse (n = 39 [92%] vs. n = 24 [57%]; p < 0.001). Ventricular arrhythmias had occurred in 34 patients (41%), who were younger (age 39 ± 14 years vs. 54 ± 14 years; p < 0.001) and had lower prevalence of TAD (n = 22 [29%] vs. n = 12 [52%]; p = 0.03). TAD was not associated with ventricular arrhythmias when adjusted for age (odds ratio adjusted for age: 0.54; 95% confidence interval: 0.20 to 1.45; p = 0.22). Conclusions We report for the first time the existence of right-sided annulus disjunction as a common finding in patients with MAD. TAD was associated with more severe left-sided annulus disjunction and mitral valve prolapse, but not with ventricular arrhythmias.
  • Language: Norwegian
  • Identifier: ISSN: 1936-878X
    EISSN: 1876-7591
    DOI: 10.1016/j.jcmg.2021.01.028
  • Source: NORA Norwegian Open Research Archives
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