Transcatheter aortic valve implantation (TAVI) is an established treatment for severe aortic stenosis in patients non-eligible for surgical aortic valve replacement. Prosthetic valve thrombosis is defined as a thrombus that is attached to any part of the prosthesis, and is not caused by infection. This may result in valve dysfunction and/or thromboembolisation. Most patients with prosthetic valve thrombosis are asymptomatic, whereas some patients present with stroke or transient ischemic attack (TIA). Obstructive prosthetic valve thrombosis may lead to overt congestive heart failure.