Praxis Medical Insights

Est. 2024 • Clinical Guidelines Distilled

Made possible by volunteer editors from the University of Calgary & University of Alberta

Last Updated: 11/26/2025

Management of Antiplatelet Therapy Before Surgery

Preoperative Discontinuation Timeline

  • The American Heart Association recommends discontinuing clopidogrel 5 days before elective non-cardiac surgery to allow adequate platelet function recovery 1, 2, 3
  • For patients undergoing CABG, stop clopidogrel at least 5 days preoperatively, as recommended by the American College of Cardiology 1, 2
  • Ticagrelor requires only 3-5 days discontinuation, while prasugrel requires 7 days, according to the American College of Cardiology 2, 3

Special Population: Patients with Coronary Stents

  • The American Heart Association recommends deferring elective surgery for at least 4-6 weeks after bare-metal stent placement and at least 6 months after drug-eluting stent placement 4, 2, 3
  • If surgery cannot be deferred, continue both aspirin and clopidogrel perioperatively, as recommended by the American College of Cardiology 4, 2, 3

Aspirin Management

  • The American College of Cardiology recommends continuing aspirin throughout the perioperative period for patients with prior MI, prior stroke, or coronary stents 2
  • Continue aspirin for CABG surgery, as recommended by the American College of Cardiology 2

Postoperative Resumption

  • The American College of Cardiology recommends resuming clopidogrel within 24 hours after surgery as soon as adequate hemostasis is achieved 2, 3
  • Consider a 300 mg loading dose when resuming therapy in patients with drug-eluting stents, as recommended by the American College of Cardiology 2, 3

Multidisciplinary Decision-Making

  • The American College of Cardiology recommends mandatory consultation between surgeon, anesthesiologist, and cardiologist for complex cases to weigh thrombotic versus bleeding risks 3