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Antiplatelet therapy and coronary artery bypass graft surgery: perioperative safety and efficacy
Alexander Kulik1, Vincent Chan, Marc Ruel
1Cardiovascular Surgery Fellow Missouri Baptist Medical Center St Louis, Missouri, USA.
Insights
For coronary artery bypass graft surgery (CABG), stop aspirin 7-10 days and clopidogrel 5 days before. Resume aspirin 48 hours post-surgery to prevent clots and bleeding.
Area of Science:
- Cardiology
- Vascular Surgery
- Pharmacology
Background:
- Antiplatelet therapy is crucial for coronary artery disease management.
- Optimal use of antiplatelet agents around coronary artery bypass graft surgery (CABG) remains debated.
- Key concerns include preoperative safety and postoperative regimens for graft patency and preventing ischemic events.
Purpose of the Study:
- To systematically review risks and benefits of preoperative aspirin and clopidogrel.
- To determine optimal aspirin timing and dosage post-CABG.
- To assess the role of postoperative clopidogrel therapy.
Main Methods:
- Systematic review of Medline database.
- Literature search from 1978 to 2008.
- Analysis of antiplatelet therapy strategies in CABG patients.
Main Results:
- Aspirin cessation for 7-10 days pre-CABG is suggested, but debated.
- Clopidogrel should be stopped at least 5 days before CABG to minimize bleeding.
- Postoperative aspirin (100-325 mg daily, started within 48h) is strongly supported; clopidogrel use is less defined but recommended for acute coronary syndrome patients.
Conclusions:
- Despite extensive use, perioperative antiplatelet management for CABG needs refinement.
- Ongoing trials will clarify optimal aspirin and clopidogrel use.
- Evidence supports aspirin post-CABG, while clopidogrel's role is evolving.
Background:
Antiplatelet therapy is critical in the management of coronary artery disease. For patients undergoing coronary artery bypass graft surgery (CABG), controversy remains regarding the safety of preoperative antiplatelet therapy and the optimal postoperative antiplatelet regimen to maintain graft patency and reduce ischemic complications.
Objective:
The goal of this systematic review is to evaluate the risks and benefits of preoperative aspirin and clopidogrel therapy, to identify the optimal timing and dose of aspirin following CABG, and to assess the role of postoperative clopidogrel therapy.
Methods:
A systematic review was performed to retrieve relevant articles from the Medline database published between 1978 and 2008.
Results:
With respect to aspirin, the published data suggest that it should be held for 7 - 10 days preoperatively in patients undergoing elective CABG. However, in the current era of routine antifibrinolytic therapy and the high prevalence of patients with extensive atherosclerotic disease, this practice has been put into question. Clopidogrel should be held for at least 5 days before CABG to avoid perioperative bleeding complications. Following surgery, extensive evidence supports the use of aspirin, in doses of 100 - 325 mg daily, to be administered in 48 h postoperatively and continued indefinitely. Less is known regarding the use of clopidogrel following CABG, although it is now recommended as postoperative antiplatelet therapy in patients with recent acute coronary syndromes.
Conclusion:
Despite > 30 years of experience with antiplatelet agents during CABG, questions remain regarding their perioperative safety and efficacy. The results of continuing randomized controlled trials should further clarify the role of perioperative aspirin and clopidogrel therapy and help redefine the modern antiplatelet management of coronary artery bypass patients.
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