during follow-up intervals of one to four hours in the trials of intramuscular lidocaine infusion ( 6961 patients ) and 24 to 48 hours in the trials of intravenous lidocaine injection ( 2194 patients ) , a total of 103 cases of ventricular fibrillation and 137 deaths were recorded .
C0023660
lidocaine
C0042510
ventricular fibrillation