a comparison between five anaesthetic procedures , fentanyl ( fe ) , morphine ( mo ) , halothane ( hal ) , fentanyl/droperidol ( nla ) and thiopenthone ( two dose levels : pe 3 and pe 6 ) , all supplemented with nitrous oxide , was performed with respect to the left ventricular function ( lvf ) during anaesthesia induction and sternotomy in 47 patients with good preoperative lvf and maintained beta-blockers .
C0015846
fentanyl
C0117480
fentanyl/droperidol