patients were divided into two groups in a random double-blind manner and given either a fentanyl bolus 0.7 microgram x kg-1 followed by continuous fentanyl infusion of 0-50 micrograms x min-1 or sufentanil bolus 0.1 microgram x kg-1 followed by continuous sufentanil infusion of 0-7 micrograms x min-1 as an adjuvant to thiopentone , nitrous oxide : oxygen anaesthesia .
C0015846
fentanyl
C0143993
sufentanil