text: Effective measures for the<unk>  prevention of<unk> <unk>  syndrome implantable cardioverter-defibrillator, magnesium sulfate and beta blockers for high risk patients.
option_0: Long QT Syndrome secondary prevention
option_1: Short QT syndrome medical therapy
option_2: Third degree AV block secondary prevention
option_3: Ventricular tachycardia secondary prevention
option_4: Ventricular tachycardia primary prevention
option_5: Third degree AV block primary prevention
option_6: Pulseless ventricular tachycardia primary prevention
option_7: Second degree AV block primary prevention