In vitro myocardial effects of 4-(3,4-dimethoxybenzyl)-2-imidazolidinone (Ro 7-2956).

Adrenergic beta-Antagonists/pharmacology Animals Benzyl Compounds/pharmacology Calcium/pharmacology Cats Electric Stimulation Guinea Pigs Heart/drug effects Heart Atria/drug effects Heart Rate/drug effects Heart Ventricles/drug effects Imidazoles/pharmacology In Vitro Techniques Isoproterenol/pharmacology Ketones/pharmacology Methyl Ethers/pharmacology Muscle Contraction/drug effects Papillary Muscles/drug effects Receptors, Adrenergic/drug effects Time Factors

Adrenergic beta-Antagonists Benzyl Compounds Imidazoles Ketones Methyl Ethers Receptors, Adrenergic Isoproterenol Calcium