Accident--or apparent accident.
D000056:Accident Prevention; D000059:Accidents; D000063:Accidents, Traffic; D000367:Age Factors; D000368:Aged; D001145:Arrhythmias, Cardiac / Q000150:complications* / Q000175:diagnosis / Q000188:drug therapy; D001285:Atropine / Q000627:therapeutic use; D002302:Cardiac Output; D004562:Electrocardiography; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D013575:Syncope / Q000209:etiology; D013997:Time Factors
D001285:Atropine