title: Congenital long QT syndrome.
abstract: Long QT syndrome (LQTS) can be asymptomatic-identifiable as an incidental finding on electrocardiogram-or it can present with palpitation, syncope, seizures, or sudden cardiac death. LQTS is characterized by a prolonged QT interval, which can be associated with a specific form of polymorphic ventricular tachycardia known as torsade de pointes. Other electrocardiogram changes in LQTS include T-wave abnormalities, particularly bifid T waves, U waves, and T-wave alternans. The precipitating factors of LQTS include electrolyte abnormalities, bradyarrhythmias, medications (such as antiarrhythmic drugs, antibiotics, antipsychotics, and antihistamines), and myocardial ischemia. The authors report a case of LQTS in a 47-year-old woman with no other significant cardiac history.
authors.affiliation: Department of Internal Medicine, Wright State University Boonshoft School of Medicine, Section of Electrophysiology, Good Samaritan Hospital, Dayton, Ohio, USA.
authors.forename: Najeeb
authors.initials: N
authors.lastname: Ahmed
authors.forename: Kamran
authors.initials: K
authors.lastname: Riaz
authors.forename: Ripudeep
authors.initials: R
authors.lastname: Rai
authors.forename: Mohammed
authors.initials: M
authors.lastname: Osman
authors.forename: Abdul
authors.initials: A
authors.lastname: Wase
mesh_terms: D017147:Defibrillators, Implantable; D004562:Electrocardiography; D005260:Female; D006801:Humans; D008133:Long QT Syndrome / Q000151:congenital* / Q000503:physiopathology; D008875:Middle Aged