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. 2021 Jul 26;52(9):3045–3053. doi: 10.1161/STROKEAHA.121.035613

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© 2021 American Heart Association, Inc.

This article is made available via the PMC Open Access Subset for unrestricted re-use and analyses in any form or by any means with acknowledgement of the original source. These permissions are granted for the duration of the COVID-19 pandemic or until permissions are revoked in writing. Upon expiration of these permissions, PMC is granted a perpetual license to make this article available via PMC and Europe PMC, consistent with existing copyright protections.

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Figure 4. — Management of vaccine-induced immune thrombotic thrombocytopenia (VITT). Note that the 1 in 40 000 risk of cerebral vein thrombosis (CVT) following ChAdOx1 vaccination is derived from the estimate by Pottegård et al³¹ regarding excess event rates rather than laboratory confirmed VITT in CVT. For these excess events, VITT should be suspected. Image generated using Biorender.com. COVID-19 indicates coronavirus disease 2019; CTV, computed tomography venogram; HITT heparin-induced thrombotic thrombocytopenia; MRV magnetic resonance venogram; PF4 platelet factor 4, IVIg intravenous immunoglobulin; and VTE, venous thromboembolism.