Praxis Medical Insights

Est. 2024 • Clinical Guidelines Distilled

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

Last Updated: 9/24/2025

Perioperative Anticoagulation Management

Introduction to Anticoagulant Management

  • The American Society of Anesthesiologists recommends stopping direct oral anticoagulants (DOACs) like apixaban and rivaroxaban 48 hours before high bleeding risk surgery and 24 hours before low bleeding risk procedures 1
  • For warfarin, the American College of Cardiology recommends discontinuing it 5 days preoperatively to allow INR to normalize below 1.5 2, 3

Warfarin Management

  • The American College of Cardiology recommends stopping warfarin 5 days before surgery to allow INR to normalize below 1.5 2, 3
  • The American Society of Anesthesiologists recommends checking INR prior to the procedure to confirm it is <1.5 3
  • The American College of Cardiology recommends restarting warfarin the evening of the procedure at the usual daily dose 2
  • Bridging with low molecular weight heparin (LMWH) is not routinely recommended for most patients, including those with atrial fibrillation, according to the American Heart Association 2, 1

Direct Oral Anticoagulants (DOACs): Apixaban and Rivaroxaban

  • The European Society of Cardiology recommends stopping DOACs the night before the procedure (approximately 24 hours) for low bleeding risk procedures 1, 4
  • The American College of Cardiology recommends resuming therapy 6 hours or more after the procedure if hemostasis is adequate 1, 5
  • For high bleeding risk procedures, the French guidelines recommend stopping rivaroxaban and apixaban 3 days (72 hours) before surgery when creatinine clearance is >30 mL/min 1, 6

Dabigatran (Special Considerations)

  • The American College of Cardiology recommends that renal function determines timing due to predominant renal elimination 1, 6
  • For CrCl >50 mL/min, the European Society of Cardiology recommends stopping dabigatran 4 days before high-risk surgery 1, 6
  • For CrCl 30-50 mL/min, the American Heart Association recommends stopping dabigatran 5 days before high-risk surgery 1, 6

Critical Pitfalls to Avoid

  • The American Society of Anesthesiologists recommends not using bridging anticoagulation with heparin products when stopping DOACs, as this increases bleeding risk without reducing thrombotic risk 1, 6, 4
  • The American College of Cardiology recommends not performing neuraxial anesthesia if there is any possibility of residual DOAC levels, especially in elderly patients (>80 years) or those with renal impairment 6

Resumption After Surgery

  • The European Society of Cardiology recommends resuming DOACs 6-48 hours after surgery depending on bleeding risk and adequacy of hemostasis 1, 5
  • For low bleeding risk, the American College of Cardiology recommends resuming as early as 6 hours post-procedure 1
  • For high bleeding risk, the American Heart Association recommends delaying 24-48 hours until hemostasis is secure 5

Emergency Surgery Considerations

  • The American College of Cardiology recommends considering reversal agents, such as prothrombin complex concentrate (PCC) 50 IU/kg for warfarin, in cases of emergent surgery (<6 hours) 2