title: Importance of QT interval in clinical practice.
abstract: Long QT interval is an important finding that is often missed by electrocardiogram interpreters. Long QT syndrome (inherited and acquired) is a potentially lethal cardiac channelopathy that is frequently mistaken for epilepsy. We present a case of long QT syndrome with multiple cardiac arrests presenting as syncope and seizures. The long QTc interval was aggravated by hypomagnesaemia and drugs, including clarithromycin and levofloxacin. Multiple drugs can cause prolongation of the QT interval, and all physicians should bear this in mind when prescribing these drugs.
authors: Anand
authors: A
authors: Ambhore
authors: Swee-Guan
authors: SG
authors: Teo
authors: Abdul Razakjr
authors: AR
authors: Bin Omar
authors: Department of Cardiology, National University Heart Centre, 1E Kent Ridge Road, NUHS Tower Block, Level 9, Singapore 119228. kian_keong_poh@nuhs.edu.sg.
authors: Kian-Keong
authors: KK
authors: Poh
mesh_terms: D000328:Adult; D017147:Defibrillators, Implantable; D004562:Electrocardiography; D006339:Heart Rate; D006801:Humans; D008133:Long QT Syndrome / Q000150:complications / Q000151:congenital / Q000175:diagnosis* / Q000628:therapy*; D008297:Male; D012307:Risk Factors; D012640:Seizures / Q000150:complications
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