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Published on: February 28, 2012
Clopidogrel: the data, the experience, and the controversies
Saihari Sadanandan1, Inder M Singh
1Indiana University Health, Indianapolis, IN 46202, USA. ssadanana@iupui.edu
Insights
Dual antiplatelet therapy with aspirin and clopidogrel is standard for acute coronary syndromes (ACS) and percutaneous coronary intervention (PCI). This review examines optimal dosing, timing, duration, and alternatives for this crucial treatment.
Area of Science:
- Cardiology
- Pharmacology
Background:
- Dual antiplatelet therapy (DAPT) with aspirin and clopidogrel is standard for acute coronary syndromes (ACS) and percutaneous coronary intervention (PCI).
- Extensive evidence supports DAPT's efficacy and safety in these patient populations.
- However, optimal clinical use remains debated.
Purpose of the Study:
- To review and discuss controversies surrounding the optimal use of DAPT with aspirin and clopidogrel.
- To address key areas of debate in DAPT management for ACS and PCI patients.
Main Methods:
- Literature review of randomized clinical trials and patient registries.
- Discussion of ongoing controversies and clinical questions regarding DAPT.
Main Results:
- Key debated topics include clopidogrel loading dose and timing.
- Optimal DAPT duration and the impact of platelet response variability are discussed.
- The role of alternative P2Y₁₂ antagonists is also considered.
Conclusions:
- Optimal use of aspirin and clopidogrel DAPT in ACS and PCI requires careful consideration of several factors.
- Further research and clinical consensus are needed to address current controversies.
Abstract:
Dual antiplatelet therapy with acetylsalicylic acid (aspirin) and clopidogrel is a guideline-recommended standard of care for patients with acute coronary syndromes (ACS) and those who undergo percutaneous coronary intervention (PCI). Despite a large body of clinical evidence obtained from randomized clinical trials and patient registries supporting the efficacy and safety of aspirin plus clopidogrel therapy in these patients, questions concerning the optimal use of dual antiplatelet therapy remain. Widely debated topics pertaining to dual antiplatelet therapy in patients with ACS or undergoing PCI include (i) the appropriate clopidogrel loading dose; (ii) the optimal time to initiate the clopidogrel loading dose; (iii) the optimal duration of dual antiplatelet therapy following ACS or PCI; (iv) impact of variability of platelet response on patient outcomes; and (v) the role of other recommended and emerging P2Y₁₂ antagonists. This review discusses these ongoing controversies regarding the optimal use of dual antiplatelet therapy with aspirin and clopidogrel in patients with ACS or those undergoing PCI.
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