{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,10]],"date-time":"2026-03-10T00:55:54Z","timestamp":1773104154883,"version":"3.50.1"},"reference-count":30,"publisher":"Wiley","issue":"2","license":[{"start":{"date-parts":[[2023,7,2]],"date-time":"2023-07-02T00:00:00Z","timestamp":1688256000000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Cathet Cardio Intervent"],"published-print":{"date-parts":[[2023,8]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Background<\/jats:title><jats:p>Valve\u2010in\u2010valve (VIV) transcatheter aortic valve implantation (TAVI) is a less invasive therapeutic option compared with redo surgical valve replacement for high\u2010risk patients. Relative to procedures within stented surgical valves, VIV\u2010TAVI within stentless valves is associated with a higher complication rate due to challenging underlying anatomy and absence of fluoroscopic landmarks.<\/jats:p><\/jats:sec><jats:sec><jats:title>Aims<\/jats:title><jats:p>We share a single\u2010center experience with VIV\u2010TAVI in stentless valves, discussing our procedural insights and associated outcomes.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>Our institutional database was queried, and 25 patients who had undergone VIV\u2010TAVI within a stentless bioprosthesis, homograft, or valve\u2010sparing aortic root replacement between 2013 and 2022 were found. Outcome endpoints were based on the Valve Academic Research Consortium\u20103 criteria.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>The mean age of the cohort was 69.5\u2009\u00b1\u200913.6 years. VIV implantation was performed within a homograft in 11 patients, a stentless bioprothesis in 10 patients, and a valve\u2010sparing aortic root replacement in 4 patients. Nineteen (76%) balloon\u2010expandable valves, 5 (20%) self\u2010expanding valves, and one mechanically\u2010expandable (4%) valve were implanted with 100% procedural success, with no instances of significant paravalvular leak, coronary occlusion, or device embolization. There was one (4%) in\u2010hospitality mortality after an emergency procedure; one (4%) patient experienced a transient ischemic attack; and two (8%) patients required permanent pacemaker implantation. The median length of hospital stay was 2 days. After a median follow\u2010up time of 16.5 months, valve function was acceptable in all patients with available data.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusion<\/jats:title><jats:p>VIV\u2010TAVI within stentless valves can be safely performed with methodical procedural technique and can provide clinical benefit in patients at high reoperation risk.<\/jats:p><\/jats:sec>","DOI":"10.1002\/ccd.30755","type":"journal-article","created":{"date-parts":[[2023,7,2]],"date-time":"2023-07-02T12:01:03Z","timestamp":1688299263000},"page":"328-338","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["Transcatheter aortic valve\u2010in\u2010valve implantation within stentless landing zones: Procedural insights from a single\u2010center experience"],"prefix":"10.1002","volume":"102","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-8866-4490","authenticated-orcid":false,"given":"Frederick M.","family":"Lang","sequence":"first","affiliation":[{"name":"Division of Cardiac, Thoracic, and Vascular Surgery, Department of Surgery NewYork\u2010Presbyterian\/Columbia University Irving Medical Center New York New York USA"},{"name":"Division of Cardiology, Department of Medicine NewYork\u2010Presbyterian\/Columbia University Irving Medical Center New York New York USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Nino","family":"Mihatov","sequence":"additional","affiliation":[{"name":"Division of Cardiology, Department of Medicine NewYork\u2010Presbyterian\/Columbia University Irving Medical Center New York New York USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jacob","family":"Kriegel","sequence":"additional","affiliation":[{"name":"Division of Cardiac, Thoracic, and Vascular Surgery, Department of Surgery NewYork\u2010Presbyterian\/Columbia University Irving Medical Center New York New York 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Department of Medicine NewYork\u2010Presbyterian\/Columbia University Irving Medical Center New York New York USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"David","family":"Blusztein","sequence":"additional","affiliation":[{"name":"Division of Cardiology, Department of Medicine NewYork\u2010Presbyterian\/Columbia University Irving Medical Center New York New York USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Thomas J.","family":"Cahill","sequence":"additional","affiliation":[{"name":"Division of Cardiology, Department of Medicine NewYork\u2010Presbyterian\/Columbia University Irving Medical Center New York New York USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Kyle R.","family":"Lehenbauer","sequence":"additional","affiliation":[{"name":"Division of Cardiology, Department of Medicine NewYork\u2010Presbyterian\/Columbia University Irving Medical Center New York New York 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