Torsade-de- pointes is caused by-: (A) Hypermagnesemia, (B) Metabolic acidosis, (C) Hypomagnesemia, (D) Metabolic alkalosis
Answer is C. Torsades-de-pointes is a form of VT seen as a complication of prolonged ventricular repolarisation. It is seeen in hypomagnesemia. It is not seen in hypermagnesemia,metabolic acidosis,metabolic alkalosis Ref Harrison 20th ed pg 1436