Congenital long QT syndrome.
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.
Ahmed
Najeeb
N
Department of Internal Medicine, Wright State University Boonshoft School of Medicine, Section of Electrophysiology, Good Samaritan Hospital, Dayton, Ohio, USA.
Riaz
Kamran
K
Rai
Ripudeep
R
Osman
Mohammed
M
Wase
Abdul
A
D017147:Defibrillators, Implantable; D004562:Electrocardiography; D005260:Female; D006801:Humans; D008133:Long QT Syndrome / Q000151:congenital* / Q000503:physiopathology; D008875:Middle Aged