Induced concealed atrial flutter.
D000328:Adult; D000368:Aged; D001146:Arrhythmia, Sinus / Q000150:complications; D001282:Atrial Flutter / Q000175:diagnosis* / Q000209:etiology; D002304:Cardiac Pacing, Artificial; D004562:Electrocardiography; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D012804:Sick Sinus Syndrome / Q000150:complications / Q000503:physiopathology; D012848:Sinoatrial Block / Q000150:complications; D013575:Syncope / Q000209:etiology