Idionodal tachycardia "unmasked" by carotid sinus pressure.
D000293:Adolescent; D002346:Carotid Sinus / Q000503:physiopathology*; D004562:Electrocardiography; D005260:Female; D006801:Humans; D011312:Pressure; D012214:Rheumatic Heart Disease / Q000503:physiopathology; D013610:Tachycardia / Q000503:physiopathology*