What does the mode of action for sodium/lithium heparin involve?

The mode of action for sodium/lithium heparin primarily involves inactivating thrombin, which is a key enzyme in the coagulation cascade. Heparin acts by binding to antithrombin III, which enhances its ability to inhibit thrombin and factor Xa. This inhibition prevents the conversion of fibrinogen to fibrin, thereby stopping the formation of blood clots.

The significance of this action is critical in medical settings where anticoagulation is necessary, such as during surgeries, in the management of thromboembolic disorders, or in patients undergoing treatments that may increase the risk of clot formation. Understanding this mechanism of action is essential for phlebotomy technicians as it informs the correct handling and administration of heparin in clinical practices.

The other options do not accurately describe the primary function of sodium/lithium heparin in the context of its anticoagulant properties.