Regarding torsades de pointes, false statement is:: (A) More Common in males, (B) Hypocalcemia can be a causative false, (C) IV.mg is initial treatment of choice for acquired cause., (D) Congenital cause is treated with beta blocker
Answer is A. Ans. A. More Common in malesCAUSES OF TORSADES DE POINTES:I. CongenitalII Acquired: BradycardiaHypokalemiaDrugs- Quinidine, procainamide, sotalol, amiodaroneDisopyramide, phenothiazine, TCATorsades de pointes is more common in females (because of |QT)Mechanism - Initiation by early after depolarization- Perpetuation by transmural entryTreatment-I. Congenital: Betablocker, pacing, ICII Acquired: I.V Magnesium, pacing