Document Detail

Intravascular ultrasound assessment of cobalt chromium versus stainless steel drug-eluting stent expansion.
MedLine Citation:
PMID:  20403478     Owner:  NLM     Status:  MEDLINE    
It is not clear whether the thin struts and different alloy of a cobalt chromium stent will cause greater acute stent recoil compared to conventional stainless steel stents. We used postintervention intravascular ultrasound (IVUS) examinations to study 99 patients with 116 stented lesions: 61 Xience/Promus stents (cobalt chromium stent group) and 27 Taxus Libert? and 28 Cypher stents (stainless steel stent group). The IVUS images were obtained before and immediately after stent implantation with only the stent-delivery balloon. The ratio of the IVUS-measured to manufacturer-predicted stent diameter and area was the measure of acute stent recoil and expansion. The baseline patient characteristics, lesion morphology, and procedural details were comparable between the 2 groups. The ratio of the IVUS-measured to manufacturer-predicted stent diameter and area was 0.74 versus 0.73 (p = 0.57) and 0.63 versus 0.63 (p = 0.69), respectively, for the cobalt chromium and stainless steel stents. In conclusion, the acute performance of Xience/Promus was similar to that of previous stainless steel stents, and the thinner cobalt chromium metallic platform did not compromise the radial strength of the stent.
Yong He; Akiko Maehara; Gary S Mintz; Harpreet Bharaj; Celia Castellanos; Srinivas Kesanakurthy; Xiaofan Wu; Ning Guo; So-Yeon Choi; Martin B Leon; Gregg W Stone; Roxana Mehran; Leroy E Rabbani; Jeffrey W Moses
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Publication Detail:
Type:  Comparative Study; Journal Article    
Journal Detail:
Title:  The American journal of cardiology     Volume:  105     ISSN:  1879-1913     ISO Abbreviation:  Am. J. Cardiol.     Publication Date:  2010 May 
Date Detail:
Created Date:  2010-04-20     Completed Date:  2010-06-15     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0207277     Medline TA:  Am J Cardiol     Country:  United States    
Other Details:
Languages:  eng     Pagination:  1272-5     Citation Subset:  AIM; IM    
Copyright Information:
Copyright 2010 Elsevier Inc. All rights reserved.
Cardiovascular Research Foundation, Columbia University Medical Center-New York Presbyterian Hospital, New York, NY, USA.
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MeSH Terms
Angioplasty, Transluminal, Percutaneous Coronary / methods*
Chromium Alloys / pharmacology*
Coated Materials, Biocompatible*
Coronary Stenosis / surgery*,  ultrasonography
Coronary Vessels / ultrasonography
Drug-Eluting Stents*
Follow-Up Studies
Postoperative Period
Prosthesis Design
Reproducibility of Results
Retrospective Studies
Stainless Steel*
Ultrasonography, Interventional / methods*
Reg. No./Substance:
0/Chromium Alloys; 0/Coated Materials, Biocompatible; 12597-68-1/Stainless Steel

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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