Medline ® Abstract for Reference 36
of 'Use of intracoronary stents for specific coronary lesions'
Prevention of lesion recurrence in chronic total coronary occlusions by paclitaxel-eluting stents.
Werner GS, Krack A, Schwarz G, Prochnau D, Betge S, Figulla HR
J Am Coll Cardiol. 2004;44(12):2301.
OBJECTIVES: The aim of this research was to assess the efficacy of paclitaxel-eluting stents in chronic total coronary occlusions (CTO).
BACKGROUND: Percutaneous coronary interventions for CTOs are characterized by a high target vessel failure rate.
METHODS: In 48 consecutive patients, paclitaxel-eluting stents (Taxus, Boston Scientific Corp., Natick, Massachusetts) were implanted after successful recanalization of a CTO (duration>2 weeks). Patients underwent an angiography after 6 months and were followed clinically for 12 months. They were compared with 48 lesion- and risk-matched patients with CTOs treated with bare metal stents (BMS). Primary clinical end point was the one-year incidence of major adverse cardiac events (MACE) (death, myocardial infarction, repeat revascularization); secondary end points were the rate of restenosis and re-occlusion.
RESULTS: In-hospital MACE was 4.2% with Taxus, and 2.1% with BMS (p = NS). The one-year MACE rate was 12.5% in the Taxus group, and 47.9% in the BMS group (p<0.001), which was due to a reduced need for repeat revascularization. The angiographic restenosis rate was 8.3% with Taxus versus 51.1% with BMS (p<0.001). There was only one late re-occlusion with Taxus (2.1%) as compared with 23.4% with BMS (p<0.005). The late loss was reduced in the Taxus group by 84% as compared with BMS. All nonocclusive restenoses in the Taxus group were focal and successfully treated by implanting an additional Taxus stent.
CONCLUSIONS: The treatment of CTOs with a paclitaxel-eluting stent drastically reduces MACE and restenosis, and almost eliminates re-occlusion, which is typically frequent with BMS in CTOs. Chronic total coronary occlusion should be a preferred indication for drug-eluting stents.
Clinic for Internal Medicine I, Friedrich-Schiller University Jena, Jena, Germany.