Comparison of Strut Coverage at 6 Months by Optical Coherence Tomography With Everolimus-Eluting Stenting of Bare-Metal Stent Restenosis Versus Stenosis of Nonstented Atherosclerotic Narrowing (from the DESERT Study) - 26/04/15
, Giuseppe Musumeci, MD b, Paolo Calabria, MD a, Alberto Cresti, MD a, Roberto Rescigno, RT a, Alessandra Aruffo, RT a, Francesco Prati, MD c, Ugo Limbruno, MD, PhD aAbstract |
Incomplete struts coverage is a predictor of late stent thrombosis after implantation of the drug-eluting stents (DES) in atherosclerotic lesions. The process of struts coverage in DES implanted for bare-metal stent (BMS) restenosis has never been described. Thirty-two patients with stable coronary artery disease were consecutively selected, 11 with BMS restenosis (group A) and 21 with de novo atherosclerotic lesions (group B). All patients underwent everolimus-eluting stent implantation; coronary angiography and optical coherence tomography were performed at 6 months follow-up. Percentage difference in struts coverage between the 2 groups was the primary end point. A total of 85,773 struts (17,891 in group A and 67,882 in group B) were analyzed: compared with group B, the percentage of uncovered stent struts was significantly lower in group A (2.6% vs 4.8%; p <0.0001). In group A, DES struts protruding out of BMS were more uncovered (5.0% vs 1.9%; p <0.0001) and malapposed (4.1% vs 2.1%; p <0.0001) compared with overlapping struts. In conclusion, when DES are implanted to treat BMS restenosis, struts coverage at 6 months follow-up is more complete compared with DES implanted in atherosclerotic lesions.
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Vol 115 - N° 10
P. 1351-1356 - mai 2015 Retour au numéro
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