Lidocaine

From the American Heart Association (2006):

Please note: Lidocaine has been removed from the pulseless arrest algorithm because according to the 2010 ACLS guidelines, lidocaine has not been proven to have short or long term efficacy in cardiac arrest. Lidocaine may, however, be considered if amiodarone is unavailable (Class IIb, LOE B). Circulation 2010; 122: S729-S767