fentanyl 0.19 microm and sufentanil-0.17 microm caused a significant lengthening of action potential duration at 50 and 90 % repolarization , 6.4 % and 7.3 % , and 10.2 % and 12.4 % , respectively , p less than 0.05 .
C0015846
fentanyl
C0143993
sufentanil