Thromboembolic Disease
Conditions
Keywords
Thromboembolic Disease, HEPARINS, ARGATROBAN, Unfractionated heparin (UFH), Low molecular weight heparins (LMWH), Anti-Xa and anti-IIa activity
Brief summary
Unfractionated heparin (UFH) and low molecular weight heparins (LMWH) provide anticoagulation through their anti-Xa and anti-IIa activity. This anti-IIa activity can lead to an overestimation of argatroban's activity when switching to an anti-IIa anticoagulant such as argatroban. This situation can be critical because argatroban is generally administered following heparin therapy due to suspected heparin-induced thrombocytopenia. Therefore, there is both a significant thrombotic risk induced by the underlying condition and a hemorrhagic risk induced by the anticoagulation. For this reason, it is important to be able to accurately monitor the anti-IIa activity of argatroban. To date, the test used to determine the anti-IIa activity of argatroban at the Hematology Laboratory of the Strasbourg University Hospitals (HUS) is a modified thrombin time (with a calibration curve adapted for argatroban). When switching between several molecules with anti-IIa activity, this test does not allow for the differentiation of the anti-IIa activity attributable to each anticoagulant. There are no data in the literature to determine whether heparins interfere with this test, and if so, its extent.
Interventions
None listed
Sponsors
University Hospital, Strasbourg, France
Study design
Observational model
CASE_ONLY
Time perspective
PROSPECTIVE
Eligibility
Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No
Inclusion criteria
s: * Adult patient (≥ 18 years) * Patient anticoagulated with UFH or LMWH * Sample sent to the Hematology Laboratory of the University Hospitals of Strasbourg (HUS) and analyzed for measurement of the anti-Xa activity of an anticoagulant in routine care
Exclusion criteria
* Patient receiving an anticoagulant other than UFH or LMWH * Insufficient sample volume
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Pearson or Spearman correlation test | 1 hour after analysis | * A correlation test (Spearman or Pearson) will be performed to compare anti-Xa activity with anti-IIa activity to determine if there is a significant correlation that could lead to an overestimation of argatroban's anti-IIa activity during a heparin-argatroban switch. * Spearman correlation uses the rank of the data to measure monotonicity between ordinal or continuous variables. Pearson correlation, on the other hand, detects linear relationships between quantitative variables with data following a normal distribution. |
Countries
France
Contacts
Primary ContactAgathe HERB, PharmD
Outcome results
None listed