This site is intended for healthcare professionals

Sign in
Go to /sign-in page

You can view 5 more pages without signing in

Assessing anticoagulation control with vitamin K antagonists

Last reviewed dd mmm yyyy. Last edited dd mmm yyyy

Authoring team

Assessing anticoagulation control with vitamin K antagonists

  • calculate the person's time in therapeutic range (TTR) at each visit. When calculating TTR:
    • use a validated method of measurement such as the Rosendaal method for computer-assisted dosing or proportion of tests in range for manual dosing
    • exclude measurements taken during the first 6 weeks of treatment
    • calculate TTR over a maintenance period of at least 6 months

Reassess anticoagulation for a person with poor anticoagulation control shown by any of the following:

  • 2 INR values higher than 5 or 1 INR value higher than 8 within the past 6 months

  • 2 INR values less than 1.5 within the past 6 months

  • TTR less than 65%

Reference:

 

Related pages

Create an account to add page annotations

Create a free account

Annotations allow you to add information to this page that would be handy to have on hand during a consultation. E.g. a website or number. This information will always show when you visit this page.

The content herein is provided for informational purposes and does not replace the need to apply professional clinical judgement when diagnosing or treating any medical condition. A licensed medical practitioner should be consulted for diagnosis and treatment of any and all medical conditions.

Connect

Copyright 2024 Oxbridge Solutions Limited, a subsidiary of OmniaMed Communications Limited. All rights reserved. Any distribution or duplication of the information contained herein is strictly prohibited. Oxbridge Solutions receives funding from advertising but maintains editorial independence.