CTICasesMitral Annuloplasty Ring Dehiscence with Paravalvular Regurgitation
Imaging findings
High-resolution cardiac CT shows a robotically placed mitral annuloplasty ring. The posterior aspect of the ring is clearly dehisced and separated from the native mitral annulus. Secondary findings of severe paravalvular regurgitation are present, including diffuse interlobular septal thickening, ground-glass opacities, and bilateral pleural effusions, consistent with cardiogenic pulmonary edema.
Key takeaways
Mitral annuloplasty ring dehiscence is a mechanical failure that can occur following mitral valve repair, resulting in significant paravalvular regurgitation and heart failure. Gated cardiac CT is a valuable modality for directly visualizing the spatial separation of the annuloplasty ring from the native annulus, offering precise anatomic localization that can guide repeat surgical intervention.
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