8 months after TAVR. What’s wrong?
A – Periprosthetic regurgitation
B – Prosthetic endocarditis
C – Leaflet Thrombosis
D – Annulus rupture
Right answer is C.
Hypoattenuation associated with bioprosthetic leaflets, also described as hypoattenuated leaflet thickening (HALT), is the hallmark of TAVR leaflet thrombosis. The hypoattenuating lesions involve the periphery and base of the leaflet and extend to varying degrees to the edges of the leaflet in the center of the bioprosthetic frame (reference: Latib, circulation Cardiovascular Intervention 2015).
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