Impact of aortic valve calcification on the outcome of transcatheter aortic valve implantation: results from the prospective multicenter German TAVI registry

Catheterization and Cardiovascular Interventions : Official Journal of the Society for Cardiac Angiography & Interventions
Stephan StaubachGerman Transcatheter Aortic Valve Implantation-Registry Investigators

Abstract

Transcatheter aortic valve implantation (TAVI) is an emerging technology in patients with severe aortic stenosis. Whether the degree of aortic valve calcification impacts the outcome after TAVI has not been thoroughly evaluated. We analyzed data from the prospective multicenter German TAVI registry, including 1,365 patients as of July 2010. Patients were divided into three groups, based on the degree of aortic valve calcification: mild (n = 67), moderate (n = 392), and severe (n = 906) valve calcification, determined by visual estimation by the operator. Mean age was 81.7 ± 6.2 years; mean logistic EUROscore was 20.6 ± 13.7%. Patients with severe aortic valve calcification had a higher mean and peak-to-peak gradient before the intervention (P < 0.0001). Technical success was achieved in 97%, similar in each group. The Medtronic CoreValve was implanted in 80.8%, the Sapien Edwards prosthesis in the remaining cases. The duration of the procedure and fluoroscopy was higher in the group with severe calcification (P < 0.01 for procedure and P < 0.05 for fluoroscopy). During the periprocedural period there were no differences among the groups regarding in-hospital death, cerebrovascular events, myocardial infarction, thromboembolic e...Continue Reading

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