Conflict of Interest: Dr. Leibundgut has received a fellowship grant from Biotronik and has received consulting fees from Abbott Laboratories. Dr. Gick has received lecture fees from Boston Scientific. None of the other authors have any conflict of interest relevant to this article to report.
E-ONLY: Coronary Artery Disease
Longitudinal compression of the platinum-chromium everolimus-eluting stent during coronary implantation: Predisposing mechanical properties, incidence, and predictors in a large patient cohort
Article first published online: 9 NOV 2012
Copyright © 2012 Wiley Periodicals, Inc.
Catheterization and Cardiovascular Interventions
Volume 81, Issue 5, pages E206–E214, April 2013
How to Cite
Leibundgut, G., Gick, M., Toma, A., Valina, C., Löffelhardt, N., Joachim Büttner, H. and Neumann, F.-J. (2013), Longitudinal compression of the platinum-chromium everolimus-eluting stent during coronary implantation: Predisposing mechanical properties, incidence, and predictors in a large patient cohort. Cathet. Cardiovasc. Intervent., 81: E206–E214. doi: 10.1002/ccd.24472
- Issue published online: 21 MAR 2013
- Article first published online: 9 NOV 2012
- Accepted manuscript online: 14 MAY 2012 04:45AM EST
- Manuscript Accepted: 6 MAY 2012
- Manuscript Received: 20 FEB 2012
- coronary artery disease;
- percutaneous coronary intervention;
- complications adult cath/intervention;
- stent structure
Objectives: To assess the longitudinal compression behavior of platinum-chromium everolimus-eluting stents, evaluate frequency of inadvertent longitudinal compression during percutaneous intervention, and define patient- and lesion-related predictors of this complication. Background: Platinum-chromium stents of Element family have unique design features to improve flexibility that may, however, impair longitudinal stability. Incidence of longitudinal stent compression during implantation and predictors for this complication are not well understood. Methods: Five contemporary stent platforms were longitudinally compressed in a bench test experiment, and spring constant, yield force, and ultimate strength were calculated from force-strain curves. We also evaluated all coronary cases treated with an Element stent from January 1, 2010, to October 31, 2011, for documented longitudinal compression. We compared baseline characteristics and periprocedural data between patients with and without longitudinal stent compression and assessed predictors for this event by multiple logistic regression models. Results: Yield force and ultimate strength were significantly lower for the Element compared with all other tested stents. In 20 patients (1.4%) and 20 lesions (0.7%) from 1,392 cases with 2,839 atherosclerotic lesions longitudinal stent compression was reported. Ostial segments, number of stents, and the presence of a bifurcation were significant predictors (adjusted odds ratios [95% confidence intervals]: 8.33 [3.30–21.28], 1.57 [1.01–2.45], 3.57 [1.36–9.35], respectively). Conclusion: The Element stent exhibits the lowest overall longitudinal strength compared with four contemporary platforms. Longitudinal compression of the Element stent is a rare complication and occurs more frequently in ostial or bifurcation lesions and with multiple stents. © 2012 Wiley Periodicals, Inc.