Амринон

Amrinone is a positive inotropic agent useful in the management of severe congestive heart failure. It is effective even in unresponsive, fully digitalized patients.

Crystalline Solid

Amrinone is used for short-term treatment of cardiac insufficiency that does not respond to treatment of other drugs.

During normal heart function, cAMP performsimportant roles in regulating intracellular calcium levels.That is, certain calcium channels and storage sites forcalcium must be activated by cAMP-dependant protein kinases.Because cAMP plays an indirect role in the contractilityprocess, agents that inhibit its degradation will providemore calcium for cardiac contraction. One phosphodiesteraseenzyme that is involved in the hydrolysis of myocardiumcAMP is F-III. Amrinone, 5-amino (3,4 -dipyridin)-6 1 (H)-one (Inocor), possesses positive isotropic effects as aresult of its ability to inhibit this phosphodiesterase. In 1999,the USP Nomenclature Committee and the United StatesAdopted Names (USAN) Council approved changing thenonproprietary name and the current official monograph titleof amrinone to inamrinone. This change in nomenclature wasa result of amrinone being confused with amiodarone becauseof the similarity of the names. This was reported to cause confusionbetween the products that led to medication errors,some of which resulted in serious injury or death.

Poison by ingestion andintravenous routes. Human systemic effects by ingestion:cardiac arrhythmias, liver function, thrombocytopenia. Anexperimental teratogen. Other experimental reproductiveeffects. When heated to decomposition it emits toxicfumes o