QT prolongation is seen in all except :
High-Yield Explanation
CONGENITAL LONG QT SYNDROME Due to Genetic defects in K+ channels involved during repolarization. Severe form Includes: I. Jerveu Lange ,ynarome (deafness, syncopal attacks , sudden death ) 2. Romano Ward Syndrome (similar to Jervell Lange syndrome but without deafness ) ACQUIRED *DRUGS *During Sleep *Hypocalcernia *Acute Myocarditis *Acute Mvocadial Infarction * Hypotnermia *HOCM *Cerebral Injury *Adyanced AV Blocks ref : harrisons 21st ed