monitoring heparin

FREE subscriptions for doctors and students... click here
You have 3 more open access pages.

Heparin is monitored by measuring the APTT.

For established thromboembolism, the APTT should be prolonged 1.5 - 2.0 times normal. The therapeutic response lessens if the APTT is less than 1.5 times normal.

Bleeding risk at this level is low unless there are predisposing risk factors. High risk patients should be treated at the lower end of the range.

Last reviewed 01/2018