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Intravascular ultrasound assessment of cobalt chromium versus stainless steel drug-eluting stent expansion.

Authors
He, Y; Maehara, A; Mintz, GS; Bharaj, H; Castellanos, C; Kesanakurthy, S; Wu, X; Guo, N; Choi, SY; Leon, MB; Stone, GW; Mehran, R; Rabbani, LE; Moses, JW
Citation
The American journal of cardiology, 105(9):1272-1275, 2010
Journal Title
The American journal of cardiology
ISSN
0002-91491879-1913
Abstract
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 Liberté 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.
MeSH terms
AgedAngioplasty, Balloon, Coronary/*methodsChromium Alloys/*pharmacology*Coated Materials, BiocompatibleCoronary Stenosis/*surgery/ultrasonographyCoronary Vessels/ultrasonography*Drug-Eluting StentsFemaleFollow-Up StudiesHumansMalePostoperative PeriodProsthesis DesignReproducibility of ResultsRetrospective Studies*Stainless SteelUltrasonography, Interventional/*methods
DOI
10.1016/j.amjcard.2009.12.042
PMID
20403478
Appears in Collections:
Journal Papers > School of Medicine / Graduate School of Medicine > Cardiology
AJOU Authors
최소연
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