in this situation the convlusion threshold for the 8 substances is as follows : pethidine 20 mg.kg-1 i.v. , piritramide 30 , morphine 180 , phenoperidine 4 , r 39 209 5 , fentanyl 4 , sufentanil 4 and r 34 995 10 mg.kg-1 i.v .
C0015846
fentanyl
C0143993
sufentanil