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        Bioprosthetic valve thrombosis and degeneration following transcatheter aortic valve implantation (TAVI)

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        Author
        Mirsadraee, Saeed
        Gorog, Diana
        Attention
        2299/23126
        Abstract
        Bioprosthetic valve thrombosis (BPVT) is a recognised complication of prosthetic aortic valves and can be seen in up to 13% of patients after transcatheter implantation.The mechanism of BPVT is not well known, abnormal flow conditions in the new and native sinuses and lack of functional endothelialisation are suspected causes. BPVT may result in valve dysfunction, possibly related to degeneration, and recurrence of patient symptoms, or remain subclinical. BPVT is best diagnosed by multiphase gated CT angiography as the presence of reduced leaflet motion (RELM) and hypoattenuating aortic leaflet thickening (HALT). Whilst CT is used to exclude BPVT in symptomatic patients and those with increased valve gradient, the value of screening and prophylactic anticoagulation is debatable.
        Publication date
        2020-09-09
        Published in
        Clinical Radiology
        Published version
        https://doi.org/10.1016/j.crad.2020.08.015
        License
        http://creativecommons.org/licenses/by-nc-nd/4.0/
        Other links
        http://hdl.handle.net/2299/23126
        Relations
        School of Life and Medical Sciences
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