U
Ulrich Schaefer
Researcher at St George's Hospital
Publications - 47
Citations - 2614
Ulrich Schaefer is an academic researcher from St George's Hospital. The author has contributed to research in topics: Aortic valve & Heart valve. The author has an hindex of 15, co-authored 43 publications receiving 2067 citations.
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Journal ArticleDOI
Transcatheter aortic valve implantation in failed bioprosthetic surgical valves.
Danny Dvir,John G. Webb,Sabine Bleiziffer,Miralem Pasic,Ron Waksman,Susheel Kodali,Marco Barbanti,Azeem Latib,Ulrich Schaefer,Josep Rodés-Cabau,Hendrik Treede,Nicolo Piazza,David Hildick-Smith,Dominique Himbert,Thomas Walther,Christian Hengstenberg,Henrik Nissen,Raffi Bekeredjian,Patrizia Presbitero,Enrico Ferrari,Amit Segev,Arend de Weger,Stephan Windecker,Neil Moat,Massimo Napodano,M. Wilbring,Alfredo Giuseppe Cerillo,Stephen Brecker,Didier Tchetche,Thierry Lefèvre,Federico De Marco,Claudia Fiorina,Anna Sonia Petronio,Rui Campante Teles,Luca Testa,Jean Claude Laborde,Martin B. Leon,Ran Kornowski +37 more
TL;DR: The survival of patients after transcatheter valve-in-valve implantation inside failed surgical bioprosthetic valves was determined and stenosis was worse than regurgitation among patients with structural valve deterioration.
Journal ArticleDOI
Outcomes in Transcatheter Aortic Valve Replacement for Bicuspid Versus Tricuspid Aortic Valve Stenosis
Sung Han Yoon,Sabine Bleiziffer,Ole De Backer,Victoria Delgado,Takahide Arai,Johannes Ziegelmueller,Marco Barbanti,Rahul Sharma,Gidon Y. Perlman,Omar K. Khalique,Erik W. Holy,Smriti Saraf,Florian Deuschl,Buntaro Fujita,Philipp Ruile,Franz-Josef Neumann,Gregor Pache,Masao Takahashi,Hidehiro Kaneko,Tobias Schmidt,Yohei Ohno,Niklas Schofer,William K.F. Kong,Edgar Tay,Daisuke Sugiyama,Hiroyuki Kawamori,Yoshio Maeno,Yigal Abramowitz,Tarun Chakravarty,Mamoo Nakamura,Shingo Kuwata,Gerald Yong,Hsien-Li Kao,Michael S. Lee,Hyo-Soo Kim,Thomas Modine,S. Chiu Wong,Francesco Bedgoni,Luca Testa,Emmanuel Teiger,Christian Butter,Stephan Ensminger,Ulrich Schaefer,Danny Dvir,Philipp Blanke,Jonathon Leipsic,Fabian Nietlispach,Mohamed Abdel-Wahab,Bernard Chevalier,Corrado Tamburino,David Hildick-Smith,Brian Whisenant,Seung-Jung Park,Antonio Colombo,Azeem Latib,Susheel Kodali,Jeroen J. Bax,Lars Søndergaard,John G. Webb,Thierry Lefèvre,Martin B. Leon,Raj Makkar +61 more
TL;DR: In this article, the authors compared the procedural and clinical outcomes in patients with bicuspid versus tricusid aortic valve stenosis (AS) from the BICUSID AS TAVR multicenter registry.
Journal ArticleDOI
Outcomes of transcatheter mitral valve replacement for degenerated bioprostheses, failed annuloplasty rings, and mitral annular calcification
Sung Han Yoon,Brian Whisenant,Sabine Bleiziffer,Victoria Delgado,Abhijeet Dhoble,Niklas Schofer,Lena Eschenbach,Eric J Bansal,Dale Murdoch,Marco Ancona,Tobias Schmidt,Ermela Yzeiraj,Flavien Vincent,Hiroki Niikura,Won-Keun Kim,Masahiko Asami,Axel Unbehaun,Sameer A. Hirji,Buntaro Fujita,Miriam Silaschi,Gilbert H.L. Tang,Shingo Kuwata,S. Chiu Wong,Antonio H. Frangieh,Colin MacLeod Barker,James E. Davies,Alexander Lauten,Florian Deuschl,Luis Nombela-Franco,Rajiv Rampat,Pedro Felipe Gomes Nicz,Jean Bernard Masson,Harindra C. Wijeysundera,Horst Sievert,Daniel J. Blackman,Enrique Gutiérrez-Ibañes,Daisuke Sugiyama,Tarun Chakravarty,David Hildick-Smith,Fabio Sandoli de Brito,Christoph J Jensen,Christian Jung,Richard W. Smalling,Martin Arnold,Simon Redwood,Albert M. Kasel,Francesco Maisano,Hendrik Treede,Stephan Ensminger,Saibal Kar,Tsuyoshi Kaneko,Thomas Pilgrim,Paul Sorajja,Eric Van Belle,Bernard Prendergast,Vinayak Bapat,Thomas Modine,Joachim Schofer,Christian Frerker,Joerg Kempfert,Guilherme F. Attizzani,Azeem Latib,Ulrich Schaefer,John G. Webb,Jeroen J. Bax,Raj Makkar +65 more
TL;DR: The TMVR provided excellent outcomes for patients with degenerated bioprostheses despite high surgical risk, however, ViR and ViMAC were associated with higher rates of adverse events and mid-term mortality compared with ViV.
Journal ArticleDOI
Transcatheter aortic valve implantation for pure severe native aortic valve regurgitation.
David Roy,Ulrich Schaefer,Victor Guetta,David Hildick-Smith,Helge Möllmann,Nicholas Dumonteil,Thomas Modine,Johan Bosmans,Anna Sonia Petronio,Neil Moat,Axel Linke,César Morís,Didier Champagnac,Radosław Parma,Andrzej Ochała,Diego Medvedofsky,Tiffany Patterson,Felix Woitek,Marjan Jahangiri,Jean-Claude Laborde,Stephen Brecker +20 more
TL;DR: This registry analysis demonstrates the feasibility and potential procedure difficulties when using TAVI for severe NAVR in carefully selected patients who are deemed too high risk for conventional surgery.
Journal ArticleDOI
Transcatheter Aortic Valve Replacement in Pure Native Aortic Valve Regurgitation
Sung Han Yoon,Tobias Schmidt,Sabine Bleiziffer,Niklas Schofer,Claudia Fiorina,Antonio J. Muñoz-García,Ermela Yzeiraj,Ignacio J. Amat-Santos,Didier Tchetche,Christian Jung,Buntaro Fujita,Antonio Mangieri,Marcus-André Deutsch,Timm Ubben,Florian Deuschl,Shingo Kuwata,Chiara De Biase,Timothy Williams,Abhijeet Dhoble,Won-Keun Kim,Enrico Ferrari,Marco Barbanti,E. Mara Vollema,Antonio Miceli,Cristina Giannini,Guiherme F. Attizzani,William K.F. Kong,Enrique Gutiérrez-Ibañes,Victor Alfonso Jimenez Diaz,Harindra C. Wijeysundera,Hidehiro Kaneko,Tarun Chakravarty,Moody Makar,Horst Sievert,Christian Hengstenberg,Bernard Prendergast,Flavien Vincent,Mohamed Abdel-Wahab,Luis Nombela-Franco,Miriam Silaschi,Giuseppe Tarantini,Christian Butter,Stephan Ensminger,David Hildick-Smith,Anna Sonia Petronio,Wei Hsian Yin,Federico De Marco,Luca Testa,Nicolas M. Van Mieghem,Brian Whisenant,Karl-Heinz Kuck,Antonio Colombo,Saibal Kar,César Morís,Victoria Delgado,Francesco Maisano,Fabian Nietlispach,Michael J. Mack,Joachim Schofer,Ulrich Schaefer,Jeroen J. Bax,Christian Frerker,Azeem Latib,Raj Makkar +63 more
TL;DR: TAVR using the new-generation devices was associated with improved procedural outcomes in treating patients with pure native AR, and significant post-procedural AR was independently associated with increased mortality.