Final answer:
Therapeutic Heparin is used to keep aPTT at 2-3 times the normal level. aPTT is a blood test that measures clotting time. Heparin is an anticoagulant medication.
Step-by-step explanation:
Therapeutic Heparin is used to keep aPTT at 2-3 times the normal level.
aPTT (Activated Partial Thromboplastin Time) is a blood test that measures the time it takes for blood to clot. Heparin is a medication that works as an anticoagulant, preventing clot formation. The therapeutic range of aPTT for heparin therapy is typically 2-3 times the normal level in order to achieve the desired anticoagulant effect.