Effects of 600 mg versus 300 mg Loading Dose of Clopidogrel in Asian Patients with ST-Segment Elevation Myocardial Infarction Undergoing Primary Percutaneous Coronary Intervention: Long-Term Follow-Up Study
Yonsei Medical Journal
;
: 906-914, 2012.
Article
in English
| WPRIM
| ID: wpr-228782
ABSTRACT
PURPOSE:
The optimum loading dose of clopidogrel has not been established in Asian patients with ST-segment elevation myocardial infarction (STEMI) undergoing primary percutaneous coronary intervention (PCI). Our aim was to evaluate the impact of different clopidogrel loading doses on short- and long-term clinical outcomes in Asian STEMI patients undergoing primary PCI. MATERIALS ANDMETHODS:
We studied 691 STEMI patients undergoing primary PCI, loaded with 600 mg (n=381) or 300 mg (n=310) of clopidogrel. The primary outcome was major adverse cardiac events (MACEs), defined as a composite of all-cause death, reinfarction, or target vessel revascularization (TVR).RESULTS:
Baseline clinical and peri-procedural characteristics were mostly comparable between the 600 mg and 300 mg groups. There were no differences in 1 month MACEs as well as all-cause death, reinfarction, TVR, and stent thrombosis between the two groups. After a median follow-up of 921 days, MACEs [adjusted hazard ratio (HR) for the 600 mg group 1.79, 95% confidence interval (CI) 0.80-3.97, p=0.153], all-cause death (adjusted HR for the 600 mg group 0.97, 95% CI 0.50-1.88, p=0.928), reinfarction (adjusted HR for the 600 mg group 1.03, 95% CI 0.55-1.91, p=0.937), and TVR (adjusted HR for the 600 mg group 1.36, 95% CI 0.68-2.69, p=0.388) did not differ between the two groups. These results were reliable even after analysis of propensity score-matched population, and were also constant among various subgroups.CONCLUSION:
A 600 mg loading dose of clopidogrel did not result in better short- and long-term clinical outcomes in Asian STEMI patients undergoing primary PCI.
Full text:
Available
Index:
WPRIM (Western Pacific)
Main subject:
Thrombosis
/
Angioplasty, Balloon, Coronary
/
Stents
/
Follow-Up Studies
/
Asian People
/
Percutaneous Coronary Intervention
/
Myocardial Infarction
Type of study:
Observational study
/
Prognostic study
Limits:
Humans
Language:
English
Journal:
Yonsei Medical Journal
Year:
2012
Type:
Article
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