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Catheter Cardiovasc Interv. 2013 Aug 1;82(2):292-7. doi: 10.1002/ccd.24805. Epub 2013 Apr 18.

Transcatheter aortic valve implantation without balloon predilation: a single-center pilot experience.

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  • 1Department of Interventional Cardiology and Cardiovascular Surgery, Hospital Universitario, Fundación Favaloro, Buenos Aires, Argentina. omendiz@ffavaloro.org



To assess the results of transcatheter aortic valve implantation (TAVI) using the Medtronic CoreValve prosthesis (Medtronic, Minneapolis, MN), without balloon predilation, in high-risk patients with degenerated severe aortic stenosis.


Fifty-one consecutive patients who underwent direct TAVI, 98% through a transfemoral approach. Patients were 79 ± 8 years of age, 74% in New York Heart Association classes III or IV and at high risk for surgical valve replacement (mean logistic EuroScore 20 ± 15). Mean aortic valve area was 0.7 ± 0.2 cm(2). Procedural success rate was 94.2%. In-hospital, there were 2 deaths, 1 minor stroke with minimal sequelae, and 14 (28%) pacemaker implantation. At 30 days, there was one additional stroke and no new deaths. The mean postprocedural transprosthetic gradient was 15 ± 5 mm Hg; periprosthetic severe regurgitation was absent and moderate in one case. After a median follow-up of 7 months, there were five additional deaths (two cardiac), while 84% of survivors were in New York Heart Association classes I or II.


These results suggest that direct CoreValve implantation in patients with severe aortic stenosis is feasible and may lead to hemodynamic and clinical improvement in patients who are poor candidates for aortic valve surgery, pending confirmation in larger series with longer follow-up.

© 2013 Wiley Periodicals, Inc.


aortic stenosis; device underexpansion; direct transcatheter aortic valve implantation

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