Class II antiarrhythmic agents.
D000318:Adrenergic beta-Agonists / Q000494:pharmacology; D000889:Anti-Arrhythmia Agents / Q000494:pharmacology*; D001145:Arrhythmias, Cardiac / Q000188:drug therapy; D006801:Humans
D000318:Adrenergic beta-Agonists; D000889:Anti-Arrhythmia Agents