the threshold doses for ventricular irritability , defined as 3 or more premature ventricular contractions during or in the 3 to 5 minutes following injection , were 1.3 microgram/kg with saline , 2.5 microgram/kg with 0.5 % lidocaine , and 4.9 microgram/kg with 1.0 % lidocaine .
C0151636
premature ventricular
C0023660
lidocaine