Background: Both the activated partial thromboplastin time (aPTT) and anti-Xa assay can be used to monitor unfractionated heparin (UFH). Following implementation of an anti-Xa method for heparin ...

In conclusion, monitoring intravenous UFH infusions with the anti-Xa HA compared to aPTT results in a more expeditious achievement of therapeutic anticoagulation, longer maintenance of therapeutic ...