Three-year clinical outcome after primary stenting of totally occluded native coronary arteries:
A randomized comparison of bare-metal stent implantation with sirolimus-eluting stent implantation for the treatment of total coronary occlusions (Primary Stenting of Totally Occluded Native Coronary Arteries [PRISON] II study)
Background
The purpose of this study was to examine the 3-year clinical outcome in patients enrolled in the Primary Stenting of Totally Occluded Native Coronary Arteries II study.
Methods
Patients with totally occluded coronary arteries randomized to either sirolimus-eluting Cypher stents (SESs) (Cordis, a Johnson & Joshson Company, Miami Lakes, FL) (100 patients) or bare-metal BxVelocity stents (BMSs) (Cordis) (100 patients) were followed clinically for 3 years.
Results
Between 1 and 3 years, there were infrequent additional clinical events that were equally distributed between the SES and the BMS group. After 3 years, target lesion revascularization was 7% in the SES group versus 27% in the BMS group (P < .001); and target vessel revascularization was seen in 11% in the SES group versus 30% in the BMS group (P = .002). Major adverse cardiac events were noted in 10% of the SES group versus 34% in the BMS group (P < .001). There were no statistically significant differences in death, myocardial infarction, and stent thrombosis according to the Academic Research Consortium criteria between the 2 groups.
Conclusions
Clinical outcome up to 3 years after implantation of SESs for total coronary occlusions continues to demonstrate a significant reduction in adverse clinical events compared with BMSs without the evidence for either disproportionate late restenosis or late stent thrombosis.
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The PRISON II trial is registered with clinicaltrials.gov number NCT 00258596.
PII: S0002-8703(08)00746-1
doi:10.1016/j.ahj.2008.08.025
© 2009 Mosby, Inc. All rights reserved.
