Rule Out Transcatheter Aortic Valve Thrombosis With Post Implantation Computed Tomography (RETORIC)

Summary

The RETORIC study is a prospective cohort study with a primary aim to assess the incidence and independent predictors of reduced leaflet motion and valve thrombosis after TAVI procedure using multimodality imaging strategy comprising cardiac CT, transesophageal echocardiography (TEE) and transthoracic echocardiography (TTE). As a secondary aim we will assess the incidence of stroke and transient ischemic attack (TIA) in patients with reduced leaflet motion and/or thrombosis when compared with those with normal leaflet function. In addition we will randomize patients with reduced leaflet motion and/or valve thrombosis to single antiplatelet therapy plus oral anticoagulation therapy versus standard therapy. The primary outcome of the nested randomized trial will be the presence of reduced leaflet motion and/or valve thrombosis after 4 months, the secondary outcome is the presence of ischemic changes in brain demonstrated by MRI.

Timeline

Start

2016-07

Primary completion

2018-07

Completion

2019-01

Publications

• Background Makkar RR, Fontana G, Jilaihawi H, Chakravarty T, Kofoed KF, De Backer O, Asch FM, Ruiz CE, Olsen NT, Trento A, Friedman J, Berman D, Cheng W, Kashif M, Jelnin V, Kliger CA, Guo H, Pichard AD, Weissman NJ, Kapadia S, Manasse E, Bhatt DL, Leon MB, Sondergaard L. Possible Subclinical Leaflet Thrombosis in Bioprosthetic Aortic Valves. N Engl J Med. 2015 Nov 19;373(21):2015-24. doi: 10.1056/NEJMoa1509233. Epub 2015 Oct 5.
• Apor A, Bartykowszki A, Szilveszter B, Varga A, Suhai FI, Manouras A, Molnar L, Jermendy AL, Panajotu A, Turani MF, Papp R, Karady J, Kolossvary M, Kovats T, Maurovich-Horvat P, Merkely B, Nagy AI. Subclinical leaflet thrombosis after transcatheter aortic valve implantation is associated with silent brain injury on brain magnetic resonance imaging. Eur Heart J Cardiovasc Imaging. 2022 Nov 17;23(12):1584-1595. doi: 10.1093/ehjci/jeac191.
• Varga A, Gyebnar G, Suhai FI, Nagy AI, Kozak LR, Poka CA, Turani MF, Borzsak S, Apor A, Bartykowszki A, Szilveszter B, Kolossvary M, Maurovich-Horvat P, Merkely B. Microstructural alterations measured by diffusion tensor imaging following transcatheter aortic valve replacement and their association with cerebral ischemic injury and cognitive function - a prospective study. Neuroradiology. 2022 Dec;64(12):2343-2356. doi: 10.1007/s00234-022-03017-5. Epub 2022 Aug 1.
• Vattay B, Nagy AI, Apor A, Kolossvary M, Manouras A, Vecsey-Nagy M, Molnar L, Boussoussou M, Bartykowszki A, Jermendy AL, Kovats T, Zsarnoczay E, Maurovich-Horvat P, Merkely B, Szilveszter B. The Predictive Value of Left Atrial Strain Following Transcatheter Aortic Valve Implantation on Anatomical and Functional Reverse Remodeling in a Multi-Modality Study. Front Cardiovasc Med. 2022 Apr 25;9:841658. doi: 10.3389/fcvm.2022.841658. eCollection 2022.
• Karady J, Apor A, Nagy AI, Kolossvary M, Bartykowszki A, Szilveszter B, Simon J, Molnar L, Jermendy AL, Panajotu A, Suhai FI, Varga A, Rajani R, Maurovich-Horvat P, Merkely B. Quantification of hypo-attenuated leaflet thickening after transcatheter aortic valve implantation: clinical relevance of hypo-attenuated leaflet thickening volume. Eur Heart J Cardiovasc Imaging. 2020 Dec 1;21(12):1395-1404. doi: 10.1093/ehjci/jeaa184.

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