Laboratory control of heparin therapy

Area of Science:

• Cardiology
• Hematology
• Pharmacology

Background:

• Thrombo-embolic disease necessitates anticoagulant therapy.
• Heparin is a commonly used anticoagulant, but its administration requires careful monitoring due to variable patient responses and potential complications.
• Ensuring therapeutic efficacy while minimizing bleeding risk is crucial in heparin therapy.

Purpose of the Study:

• To evaluate the efficacy and safety of a standard heparin dose in patients with thrombo-embolic disease.
• To investigate the variability in individual patient response to heparin therapy.
• To establish guidelines for optimal heparin dosage monitoring.

Main Methods:

• A cohort of 50 patients with thrombo-embolic disease receiving a standard daily dose of 40,000 units of heparin was studied.
• Individual patient responses to heparin were assessed over time.
• Bleeding complications were recorded and analyzed.

Main Results:

• Significant variation in patient response to the standard heparin dose was observed.
• Heparin's effect was not consistent on subsequent days of treatment.
• Five out of 50 patients (10%) experienced serious hemorrhage during therapy.

Conclusions:

• Heparin therapy requires careful monitoring to balance therapeutic effectiveness with the risk of bleeding.
• Achieving detectable but not excessive heparin levels is recommended.
• The thrombin clotting time is a suitable test for daily monitoring of heparin therapy, aiming for plasma heparin levels up to 1 mg/100 ml.