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The Reversing Warfarin App is designed for doctors to help them manage patients on the anticoagulant warfarin. It will be useful to anaesthetists, emergency specialists, surgeons, general practitioners, cardiologists and haematologists. In fact most clinicians will at some time have patients on anticoagulants and would find this App helpful.

The Reversing Warfarin App will help you
• Manage patients with an elevated INR result
• Provide safe advice to rapidly reverse the INR if bleeding occurs.
• Develop an appropriate treatment protocol around elective surgery
• Immediately reverse warfarin prior to emergency surgery

Features of the Reversing Warfarin App

An elevated INR
Simply enter the INR result and get immediate advice about dose reduction and vitamin K dosage if necessary.

Managing bleeding
Bleeding is a potential problem with any anticoagulant and can be complex to manage. With the Reversing Warfarin App you simply enter the INR result, your patient’s weight and the severity of the bleed and get immediate advice including the precise dose of Prothrombinex-VF and vitamin K.

Managing surgery
Doctors are frequently faced with managing patients on warfarin going for surgery. The reversing Warfarin App enables you to develop a personalised protocol for each patient. For elective surgery cases the App takes you through a series of questions to assess the thrombosis and bleeding risk, and then recommends the most appropriate protocol. You can then enter your patient's details and produce a pdf of the protocol. This can be shared with colleagues or your patient and can be printed out for the medical records.

For emergency surgery the app provides advice to immediately reverse warfarin to a safe level for surgery and again allows you to print out a protocol.

The settings allow you to select various low molecular weight heparins so you can personalise the protocol to meet your practice.

Referenced information
The recommendations are based on the Australasian Society of Thrombosis and Haemostasis guidelines (2013) and the American College of Chest Physicians Guidelines (2012). All recommendations are linked to an information page which is appropriately referenced with relevant publications.

Website for feedback
The Reversing Warfarin App is linked to the HealthObs website to allow you to ask questions, provide feedback or even start a discussion.

We welcome all feedback.


The advice is based on published reviews and guidelines. Extensive efforts have been made to ensure the accuracy of the information.

This software is to be used as a guide only and healthcare professionals should use clinical judgement and should individualise care for each patient. In no event shall the author or developer be liable to any party for damages resulting from the use of this application.

What’s New

Version 1.2

This app has been updated by Apple to use the latest Apple signing certificate.

Up dated to work on latest ios.

Drug information and dosing as in the original version

Additional information about Prothrombinex-VF including contraindications and precautions for use.

Requirement to accept terms and conditions before using the app.
Minor protocol corrections
Bug fixes

Ratings and Reviews

5.0 out of 5
2 Ratings

2 Ratings

App Privacy

The developer, New Zealand Blood Service, has not provided details about its privacy practices and handling of data to Apple.

No Details Provided

The developer will be required to provide privacy details when they submit their next app update.


  • Family Sharing

    Up to six family members will be able to use this app with Family Sharing enabled.

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