title: Subgroups of class 1 antiarrhythmic drugs.
mesh_terms: D000200:Action Potentials / Q000187:drug effects; D000889:Anti-Arrhythmia Agents / Q000494:pharmacology; D004305:Dose-Response Relationship, Drug; D004594:Electrophysiology; D006801:Humans; D012032:Refractory Period, Electrophysiological / Q000187:drug effects; D012964:Sodium / Q000378:metabolism
chemical_list: D000889:Anti-Arrhythmia Agents; D012964:Sodium