Significance of chronic sinus bradycardia in elderly people.
D000367:Age Factors; D000368:Aged; D000680:Amyl Nitrite / Q000494:pharmacology; D001146:Arrhythmia, Sinus / Q000175:diagnosis*; D001285:Atropine / Q000494:pharmacology; D001794:Blood Pressure / Q000187:drug effects; D001919:Bradycardia / Q000175:diagnosis*; D002302:Cardiac Output / Q000187:drug effects; D004562:Electrocardiography; D005080:Exercise Test; D005260:Female; D006321:Heart / Q000187:drug effects; D006339:Heart Rate / Q000187:drug effects; D006801:Humans; D008297:Male; D008729:Methoxamine / Q000494:pharmacology; D010101:Oxygen Consumption; D010138:Pacemaker, Artificial; D011187:Posture; D014636:Valsalva Maneuver
D001285:Atropine; D000680:Amyl Nitrite; D008729:Methoxamine