Prevention

Consider 

• radiofrequency ablation ^a
• long-term anti-arrhythmic therapy in symptomatic cases ^d
  
  Start medication in hospital ^a  

Consider using one of

• flecainide - at least 50 mg twice daily ^a  
• sotalol - at least 120 mg twice daily ^a  

Paroxysmal supraventricular tachycardia

Consider using one of

• flecainide 50 mg twice daily ^a  
• sotalol 80 mg or 160 mg bd po ^a  
• propafenone 600 mg ^b  

Ventricular arrhythmias

• amiodarone ^a  
• inserting an implantable defibrillator ^a  with endocardial leads ^b  
  • Consider adding one of
    • amiodarone ^b  
    • metoprolol ^a  
    • sotalol ^a  

• propafenone ^d  
• allocating therapy using electrophysiologic testing ^d  
• surgery (subendocardial resection and left ventricular endoaneurysmorrhaphy) ^c