title: T-wave alternans assessed by atropine-induced sinus tachycardia.
authors: John E
authors: JE
authors: Madias
mesh_terms: D000328:Adult; D000368:Aged; D001285:Atropine; D002304:Cardiac Pacing, Artificial / Q000379:methods*; D004562:Electrocardiography; D005240:Feasibility Studies; D005260:Female; D006339:Heart Rate / Q000187:drug effects*; D006801:Humans; D008297:Male; D008875:Middle Aged; D010276:Parasympatholytics; D013575:Syncope / Q000503:physiopathology*; D013617:Tachycardia, Supraventricular / Q000503:physiopathology*; D017180:Tachycardia, Ventricular / Q000503:physiopathology*
chemical_list: D010276:Parasympatholytics; D001285:Atropine