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עמוד בית
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May 2010
H. Vaknin-Assa, A. Assali, E. Lev, I. Ben-Dor, D. Brosh, I. Teplitsky and R. Kornowski

Background: The best therapeutic alternative for patients suffering from in-stent restenosis after drug-eluting stent implantation remains to be elucidated.

Objective: To characterize the pattern, treatment and outcomes of DES[1]-related in-stent restenosis in patients treated at our institution.

Methods: We determined the incidence and major adverse clinical events in 71 consecutive patients with DES failure among 2473 patients who were treated with 2548 drug-eluting stents between 2004 and 2007. We analyzed the clinical data, procedural parameters and clinical outcomes.

Results: The type and number of stents implanted were as follows: Cypher (n=1808), Endeavor (421) and Taxus (319) of these, 53 (2.9%), 10 (2.4%), and 8 (2.5%) patients respectively presented with restenosis. The mean time to restenosis was 11.3 ± 9.9 months. Patients’ mean age was 65 ± 11 years 75% were male, and 68% had diabetes mellitus. Unstable angina was the clinical presentation in 52 (73%). At 6 months, 3 patients had developed myocardial infarction (4.2%), repeat restenosis at follow-up was diagnosed in 8 patients (11.3%), the overall major adverse clinical events rate was 18.3% (13 patients), and 2 patients died (2.8%).

Conclusions: Drug-eluting stent-related restenosis is relatively infrequent but remains a clinical challenge. It occurs more frequently in complex lesion subsets, but the overall intermediate-term prognosis is tolerable.
 

[1] DES = drug-eluting stent

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