the effects of intravenous administration of high-dose fentanyl ( 100 micrograms.kg-1 , loading dose followed by an infusion of 200 micrograms.kg-1.h-1 ) were compared with those of a barbiturate ( pentobarbital sodium 25 mg.kg-1 , intraperitoneal ) or hypothermia ( rectal temperature 32 degrees c ) on changes in cerebral cortical tissue levels of adenosine triphosphate ( atp ) , phosphocreatine ( pcr ) , lactate , and glucose in severely hypoxemic rats ( pao2 13-23 mmhg for 20 min ) with unilateral ( left side ) carotid ligation ( 10-12 animals in each group ) .
C0004745
barbiturate
C0030883
pentobarbital