Table I.

Antithrombin, brief fact sheet.

ATCa	B01AB02
Definition	Antithrombin
U/Mb	International Units (I.U.)
Therapeutic indications	AT administration is used for prophylaxis and therapy for thromboembolic phenomena due to: - congenital deficiencies, in particular in case of surgery, pregnancy or childbirth; - acquired deficiencies, in particular in case of: - risk of capillary microthrombosis or ongoing capillary microthrombosis due to disseminated intravascular coagulation (e.g. polytrauma, septic complications, shock, pre-eclampsia and other disease states due to acute consumption coagulopathies); - risk of thrombosis or ongoing thrombosis in patients with nephrotic syndrome or enteropathies; - surgery and bleeding in patients with severe liver failure, especially if a clotting factor concentrates replacement therapy is required (prothrombin complex).
NHS classc	H
Management information	-

^aAnatomical Therapeutic Chemical Classification System. The World Health Organization system classifies all therapeutic medicinal products. The purpose is to serve as a tool for medicinal products utilisation research in order to improve the quality of their use. Medicinal products are classified into five different levels;

^bUnit of Measure;

^cNational Health Service Class.

All medicinal products are divided in classes according to the level of reimbursement by the National Health Service. Class A includes all medicinal products funded by the National Health Service; class H includes all medicinal products distributed only by hospital pharmacies within the regional healthcare services; class C refers to all medicinal products sa paid for by private out-of-pocket expense.