Praxis Medical Insights

Est. 2024 • Clinical Guidelines Distilled

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

Last Updated: 9/13/2025

Perioperative Management of Hydroxychloroquine

Introduction to Hydroxychloroquine Management

  • The American College of Chest Physicians guidelines for perioperative management of antithrombotic therapy do not list hydroxychloroquine among medications requiring interruption, as it does not increase bleeding risk 2, 4
  • Hydroxychloroquine does not affect platelet function or coagulation and does not need to be discontinued before surgery, according to the Anaesthesia journal 1

Medication Management

  • Anticoagulants like warfarin typically need to be stopped 5-6 days before surgery to allow normalization of a blood clotting measure 2
  • Antiplatelet medications such as clopidogrel and prasugrel should be discontinued 5-7 days before surgery in most cases, as recommended by the Anaesthesia journal 1

Special Considerations

  • Sudden discontinuation of hydroxychloroquine in patients with autoimmune conditions may lead to disease flares, which could complicate postoperative recovery, according to Praxis Medical Insights 5
  • Maintaining hydroxychloroquine therapy throughout the perioperative period helps prevent flares of underlying autoimmune conditions, as stated in Praxis Medical Insights 5
  • Hydroxychloroquine does not increase the risk of surgical bleeding or complicate neuraxial anesthesia, as reported in the Anaesthesia and Blood advances journals 1, 6

Perioperative Management Algorithms

  • Anticoagulants: Stop warfarin 5 days before surgery; newer anticoagulants 2-5 days before surgery depending on kidney function and bleeding risk, according to the Blood journal 7
  • Hydroxychloroquine and other disease-modifying antirheumatic drugs: Continue through the perioperative period, as recommended by Praxis Medical Insights 5

Surgical Settings

  • For minor procedures: Continue hydroxychloroquine without interruption, as recommended by the Anaesthesia journal 1
  • For major surgeries: Continue hydroxychloroquine throughout the perioperative period, according to the Anaesthesia journal and Praxis Medical Insights 1, 5
  • For emergency surgeries: No need to delay surgery due to hydroxychloroquine use, as stated in the Anaesthesia journal 1