Morphine Fentanyl Significance
Pre-induction (Tbaseline) 88.27 ± 13.78 83.67 ± 6.6 N.S
30 min post-induction (T1) 71.87 ± 9.2 *** 77.1 ± 14.67 * N.S
 30 min post-bypass (T2) 69.8 ± 8.9 *** 69.13 ± 9.49 *** N.S
1 hour post-bypass (T3) 67 ± 10.64 *** 71 ± 8.4 *** N.S
2 hours post-bypass (T4) 68.73 ± 8.2 *** 74.87 ± 7.51 ** N.S
On ICU admission (T5) 70.13 ± 6.1 *** 78.87 ± 6.1 P<0.001
3 hours after ICU admission (T6) 72.47 ± 5.05 *** 79.9 ± 6 P<0.01
6 hours after ICU admission (T7) 76.4 ± 6 *** 80.33 ± 5.3 N.S
Data presented as median (interquartile range). P value by Kruskall-Wallis. Intergroup differences (p<0.05) by Tukey’s test after log transformation: N.S=Non Significant. **P<0.01 compared to Tbaseline *P<0.05 compared to Tbaseline ***P<0.001 compared to Tbaseline.
Table 4: Mean arterial blood pressure changes (mm Hg) in the two studied groups.