title: Digitalis in the sick sinus syndrome. The effects of digitalis on sinoatrial automaticity and atrioventricular conduction.
mesh_terms: D000368:Aged; D001146:Arrhythmia, Sinus / Q000188:drug therapy*; D001285:Atropine / Q000494:pharmacology; D004070:Digitalis / Q000494:pharmacology*; D005260:Female; D006329:Heart Conduction System / Q000187:drug effects*; D006339:Heart Rate / Q000187:drug effects; D006801:Humans; D008297:Male; D008875:Middle Aged; D010042:Ouabain / Q000494:pharmacology*; D010946:Plants, Medicinal; D010947:Plants, Toxic; D012849:Sinoatrial Node / Q000187:drug effects*; D013575:Syncope / Q000188:drug therapy
chemical_list: D010042:Ouabain; D001285:Atropine