title: Calcium antagonists and cardiac dysrhythmias.
mesh_terms: D001145:Arrhythmias, Cardiac / Q000188:drug therapy*; D002118:Calcium / Q000037:antagonists & inhibitors* / Q000502:physiology; D006329:Heart Conduction System / Q000502:physiology; D006801:Humans; D014700:Verapamil / Q000009:adverse effects / Q000494:pharmacology* / Q000627:therapeutic use
chemical_list: D014700:Verapamil; D002118:Calcium