title: Fainting attacks and unusual T waves.
mesh_terms: D004562:Electrocardiography; D005260:Female; D006801:Humans; D008875:Middle Aged; D013575:Syncope / Q000150:complications*; D013614:Tachycardia, Paroxysmal / Q000150:complications / Q000503:physiopathology* / Q000628:therapy