previous studies have suggested that a number of factors may influence the ability to defibrillate : the transthoracic resistance and resultant current flow , the paddle electrode size , the duration of preshock ventricular fibrillation ( vf ) and cardiopulmonary resuscitation , metabolic abnormalities , body weight , the shock energy selected , and whether the patient is receiving lidocaine .
C0042510
ventricular
C0023660
lidocaine