Clopidogrel versus ticlopidine after intracoronary stent placement
OBJECTIVES The study compared the safety and efficacy of ticlopidine with clopidogrel in patients receiving coronary stents. BACKGROUND Stent thrombosis is reduced when ticlopidine is administered with aspirin. Clopidogrel is similar to ticlopidine in chemical structure and function but has fewer si...
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Published in | Journal of the American College of Cardiology Vol. 34; no. 7; pp. 1891 - 1894 |
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Main Authors | , , , , , , , , , , , |
Format | Journal Article |
Language | English |
Published |
New York, NY
Elsevier Inc
01.12.1999
Elsevier Science |
Subjects | |
Online Access | Get full text |
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Summary: | OBJECTIVES
The study compared the safety and efficacy of ticlopidine with clopidogrel in patients receiving coronary stents.
BACKGROUND
Stent thrombosis is reduced when ticlopidine is administered with aspirin. Clopidogrel is similar to ticlopidine in chemical structure and function but has fewer side effects; few data are available about its use in stent patients.
METHODS
We compared 30-day event rates in 500 consecutive coronary stent patients treated with aspirin and clopidogrel (300 mg loading dose immediately prior to stent placement, and 75 mg/day for 14 days) to 827 consecutive stent patients treated with aspirin and ticlopidine (500 mg loading dose and 250 mg twice daily for 14 days).
RESULTS
Patients treated with clopidogrel had more adverse clinical characteristics including older age, more severe angina, and more frequent infarction within the prior 24 h. Nonetheless, mortality was 0.4% in clopidogrel patients versus 1.1% in ticlopidine patients; nonfatal myocardial infarction occurred in 0% versus 0.5%, stent thrombosis in 0.2% versus 0.7%, bypass surgery or repeat angioplasty in 0.4% versus 0.5%, and any event occurred in 0.8% versus 1.6% of patients, respectively (p = NS). Based on the observed 30-day event rate of 1.6% with ticlopidine, the statistical power of the study was 43% to detect an even rate of 0.5% with clopidogrel, and 75% to detect an event rate with of 4% with clopidogrel, with a p value of 0.05.
CONCLUSIONS
These data indicate that clopidogrel can be safely substituted for ticlopidine in patients receiving coronary stents. |
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Bibliography: | ObjectType-Article-2 SourceType-Scholarly Journals-1 ObjectType-Feature-1 content type line 23 |
ISSN: | 0735-1097 1558-3597 |
DOI: | 10.1016/S0735-1097(99)00442-8 |