When is antithrombotic therapy indicated in perioperative anticoagulation management?

Updated: May 08, 2018
  • Author: Brian J Daley, MD, MBA, FACS, FCCP, CNSC; Chief Editor: William A Schwer, MD  more...
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Answer

Answer

In general, antithrombotic therapy is indicated for venous thromboembolic disease (ie, deep venous thrombosis [DVT]; pulmonary embolism [PE]; primary prophylaxis of DVT or PE; antithrombin III [ATIII], protein C, and protein S deficiency); arterial thromboembolic disease (ie, prosthetic heart valves, atrial fibrillation, congestive cardiomyopathies, mural cardiac thrombus, acute myocardial infarction, mitral valve disease); disseminated intravascular coagulation; and maintaining patency of vascular grafts, shunts, and bypasses. [11, 12]

Currently, it is generally recommended that patients with the highest risk of arterial or venous thromboembolism, who require interruption of oral anticoagulant therapy for surgery, should receive therapeutic-dose heparin therapy (eg, unfractionated heparin [UFH], low molecular weight heparin [LMWH]) during much of the interval when the international normalized ratio (INR) is subtherapeutic.

Usually, unless accompanied by significant cardiomyopathy or recent arterial embolus, patients with atrial fibrillation can have their Coumadin stopped 4 days prior to surgery, then resumed at the usual dose the night of surgery.


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