Non-receptor-mediated inotropic drugs.

Abstract

There has been an active search recently for non-glycoside, non-sympathomimetic positive inotropic agents. Phosphodiesterase inhibitors inhibit the breakdown of cyclic AMP, leading to an increase in intracellular cAMP concentration, and can be expected to enhance the force of myocardial contraction. The methylxanthines exert such an action in vitro; the… (More)

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