Tag J.K. Aronson MA DPhil MBChB FRCP HonFBPhS HonFFPM

Antithrombin III

General information Antithrombin III is a small glycoprotein anticoagulant that inactivates several enzymes of the coagulation system and accounts for most of the antithrombin activity in plasma and also inhibits other proteolytic enzymes. It circulates in the plasma and inactivates…

Antimony and antimonials

General information Antimony is a brittle, bluish-white, metallic element (symbol Sb; atomic no 51). The symbol Sb comes from the Latin word stibium. Antimony is found in such minerals as dyscrasite, jamesonite, kermesite, pyrargyrite, stephanite, tetrahedrite, and zinkenite. The Arabic…

Antiepileptic drugs

See also individual agents General information Some of the drugs that are used to treat epilepsy can be grouped into classes (carbamazepine and its analogue oxcarbazepine, barbiturates, hydantoins, benzodiazepines, and succinimides), while others (for example valproate, felbamate, gabapentin, levetiracetam, lamotrigine,…

Antidysrhythmic drugs

General information Classification Drugs used in dysrhythmias can be classified in different ways, the usual classification being according to their effects on the cardiac action potential [ ], as shown in Table 1 . Table 1 Electrophysiological classification of antidysrhythmic…

Anticholinergic drugs

See also individual agents General information There are many anticholinergic drugs, some structurally related to atropine, others quaternary ammonium compounds or tertiary amines ( Table 1 ). Although many of these products are claimed to have superior efficacy, specificity, or…