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Ole De Backer has been consultant for Abbott and Boston Scientific. Azeem Latib is a consultant and on the Advisory Board of Medtronic and Abbott. All other coauthors declare that they have no conflict of interest.","order":2,"name":"Ethics","group":{"name":"EthicsHeading","label":"Conflict of Interest"}},{"value":"For this retrospective study, formal consent is not required. This article does not contain any studies with animals performed by any of the authors. Informed consent was obtained from all individual participants included in the study.","order":3,"name":"Ethics","group":{"name":"EthicsHeading","label":"Ethical Approval"}},{"value":"In TAVI, choosing the appropriate size of the Lotus device remains challenging. As Lotus sizing is based on anatomical aortic root dimensions, often two valve sizes might be selected for the same patient. Patient-specific computer simulations have shown to accurately assess postoperative aortic regurgitation and the risk of new conduction abnormalities. Therefore, it can offer insight on patients with equivocal aortic root dimensions and provide additional information related to optimal device size and position.","order":4,"name":"Ethics","group":{"name":"EthicsHeading","label":"Clinical Relevance"}}]}}