title: Monophasic action potentials from right atrial muscle recorded during heart catheterization.
mesh_terms: D000200:Action Potentials; D000328:Adult; D001285:Atropine / Q000494:pharmacology; D006328:Cardiac Catheterization; D002306:Cardiac Volume; D004071:Digitalis Glycosides / Q000494:pharmacology; D004562:Electrocardiography; D005260:Female; D006325:Heart Atria / Q000503:physiopathology*; D006329:Heart Conduction System; D006339:Heart Rate / Q000187:drug effects; D006801:Humans; D008297:Male; D008722:Methods; D008875:Middle Aged; D011802:Quinidine / Q000494:pharmacology; D013997:Time Factors
chemical_list: D004071:Digitalis Glycosides; D001285:Atropine; D011802:Quinidine