Valvular & structural heart disease

Arrhythmic Mitral Valve Prolapse With Only Mild or Moderate Mitral Regurgitation: Characterization of Myocardial Substrate

JACC Clin ElectrophysiolPublished Prospective observational study

Authors' conclusion

Most patients with degenerative MVP, ventricular ectopy, and mild or moderate MR show myocardial inflammation that is concordant with myocardial scar.

Study context

Population
Patients with degenerative mitral valve prolapse (MVP) and only mild or moderate mitral regurgitation (MR), recruited in a cardiac electrophysiology clinic10 [83%] complex ventricular ectopy
Participants
12 patients
Outcome
Myocardial inflammation/fibrosis on hybrid PET/MRI
Methodological detailshybrid positron emission tomography (PET)/magnetic resonance imaging (MRI)
  • Hybrid PET/MRI

Main finding

As reported in the abstract

PET-positive (focal or focal-on-diffuse 18F-FDG uptake)
83% (n = 10)
PET/MRI-positive (FDG uptake coexisting with late gadolinium enhancement)
75% (n = 9)
Abnormal T1
58% (n = 7)
Abnormal T2
25% (n = 3)
Abnormal extracellular volume (ECV)
16% (n = 2)

Observational data: associations, not effects.

Original publication

Arrhythmic Mitral Valve Prolapse With Only Mild or Moderate Mitral Regurgitation: Characterization of Myocardial Substrate. JACC Clin Electrophysiol. Published 24 May 2023. doi:10.1016/j.jacep.2023.04.011

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