text: Secondary prevention of atrioventricular<unk>  may include correction of electrolytes disturbance, myocardial ischemia, and treating decompensated heart failure.
option_0: Third degree AV block secondary prevention
option_1: Third degree AV block primary prevention
option_2: Second degree AV block primary prevention
option_3: First degree AV block primary prevention
option_4: Ventricular tachycardia secondary prevention
option_5: Long QT Syndrome secondary prevention
option_6: Ventricular tachycardia primary prevention
option_7: Second degree AV block medical therapy