<prompt> Which of the following decreases defibrillation threshold:-AmiodaroneVerapamilSotalolDiltiazim  <response>: Defibrillation threshold is minimum amount of electric current required ventricular fibrillation. DEFIBRILLATION THRESHOLD INCREASE Amiodarone Atropine Diltiazem Verapamil DECREASES Sotalol So 3rd option is the answer. 