Document Detail

Longitudinal Deformation of Contemporary Coronary Stents: An Integrated Analysis of Clinical Experience and Observations from the Bench.
MedLine Citation:
PMID:  23017115     Owner:  NLM     Status:  Publisher    
Objective: To report clinical experience with longitudinal stent deformation (LSD) and observations from the bench. Background: LSD was recently reported with thin-strut coronary stents. Whether it is related to a particular stent or constitutes a class-effect remains debatable. Methods: After 2 cases of LSD were reported, information was sent to operators to warn of this event and identify possible cases. All cases were reviewed to ensure LSD had occurred. Simultaneously, bench testing was conducted to identify the susceptibility of stents to longitudinal compression and whether LSD detection is influenced by fluoroscopic stent visibility. Results: Between July 2010 and November 2011, 2,705 coronary interventions were performed with 4,588 stents (Promus Element = 41.6%, Xience Prime = 24.4%). Six patients with LSD were identified, all with Promus Element (0.31%). Wire bias was a predisposing factor in 4 cases. All patients were treated with postdilatation and/or additional stenting. No adverse events occurred (mean 5.8 months). In bench testing, LSD occured in all examined stents, but at different levels of applied force (weight). Most shortening at 50 g was observed with Promus Element (38.9%), as was the best visibility of LSD on x-ray images. With postdilatation all stents showed some re-elongation. Conclusion: In our practice LSD was a rare observation only seen with the Promus Element stent. When subjected to longitudinal compression in a bench test all contemporary stents can be compressed. Compression of Promus Element occurs at a lower force, but it is the only stent where deformations are detected with x ray. Postdilatation can partially improve LSD. (J Interven Cardiol 2012;**:1-10).
Mohamed Abdel-Wahab; Dmitriy S Sulimov; Guido Kassner; Volker Geist; Ralph Toelg; Gert Richardt
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-9-28
Journal Detail:
Title:  Journal of interventional cardiology     Volume:  -     ISSN:  1540-8183     ISO Abbreviation:  J Interv Cardiol     Publication Date:  2012 Sep 
Date Detail:
Created Date:  2012-9-28     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8907826     Medline TA:  J Interv Cardiol     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
©2012, Wiley Periodicals, Inc.
From the Heart Center, Segeberger Kliniken GmbH (Academic Teaching Hospital of the Universities of Kiel and Hamburg), Bad Segeberg, Germany.
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