patients received one of five primary techniques : high-dose fentanyl ( greater than 50 micrograms/kg ) , moderate-dose fentanyl ( less than 50 micrograms/kg ) , sufentanil ( 3-8 micrograms/kg ) , diazepam ( 0.4-1 mg/kg ) with ketamine ( 3-6 mg/kg ) or halothane ( 0.5-2.5 % inspired concentration after thiopental induction ) .
C0015846
fentanyl
C0143993
sufentanil