Paroxysmal atrial tachycardia provoked by swallowing.

mEq)/l to 4-5 mmol/l.The ventricular fibrillation was unresponsive to a further 10 cardioversions.A total of 400 mg disopyramide was given but after 75 minutes of resuscitation and 15 cardioversions he remained in ventricular fibrillation.Amiodarone 200 mg was then given intravenously over 30 seconds.Two to three minutes later a final 400 J cardioversion restored sinus rhythm.A total of 600 mg amiodarone was infused over the next 24 hours and then discontinued.His course continued to be stormy but he remained in sinus rhythm and was discharged home eight weeks after his cardiac arrest.