title: Repetitive paroxysmal tachycardia originating in the left atrium.
mesh_terms: D000293:Adolescent; D001794:Blood Pressure; D006328:Cardiac Catheterization; D006332:Cardiomegaly / Q000150:complications; D004562:Electrocardiography; D005260:Female; D006325:Heart Atria / Q000503:physiopathology*; D006326:Heart Auscultation; D006339:Heart Rate; D006344:Heart Septal Defects, Atrial / Q000150:complications; D006801:Humans; D007223:Infant; D008297:Male; D011651:Pulmonary Artery; D013614:Tachycardia, Paroxysmal / Q000150:complications / Q000175:diagnosis / Q000209:etiology*