Aspirin Use Prior to Coronary Artery Bypass Grafting Surgery: a Systematic Review

Area of Science:

• Cardiology
• Cardiovascular Surgery
• Pharmacology

Background:

• Pre-operative aspirin use before coronary artery bypass graft (CABG) surgery remains a debated topic.
• Conflicting guidelines from major societies highlight the controversy surrounding its benefits versus risks.

Purpose of the Study:

• To review the current evidence on aspirin use prior to CABG surgery.
• To assess the overall benefit-risk profile of pre-operative aspirin in CABG patients.

Main Methods:

• Review of observational studies and meta-analyses of randomized controlled trials (RCTs).
• Analysis of a recent large RCT evaluating pre-CABG aspirin use.

Main Results:

• Observational studies suggested reduced mortality with pre-operative aspirin.
• Meta-analysis of RCTs indicated an increased risk of post-operative bleeding, but not mortality.
• A recent large RCT found no significant difference in bleeding or mortality with pre-CABG aspirin.
• Studies indicate aspirin decreases thrombotic complications and perioperative myocardial infarction, with a manageable bleeding risk.

Conclusions:

• The overall benefit-risk assessment supports pre-operative aspirin use in CABG patients.
• Pre-operative aspirin may offer benefits in reducing thrombotic events without increasing mortality.