Torsade-de- pointes is caused by-
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
Hypermagnesemia
Metabolic acidosis
Hypomagnesemia
Metabolic alkalosis
C.V.S