Morphine
(mg)
Magnesium group
(n=30)
Control group
(n=30)
After 1 hour
Range
2.4 ± 0.503*
2 - 3
5.1 ± 0.641
2 - 6
After 6 hours
Range
7.25 ± 1.069*
6 - 9
10.5 ± 1.418
6 - 12
After 12 hours
Range
10.5 ± 0.887*
8 - 11
12.4 ± 1.846
10 - 15
After 24 hours 17.65 ± 1.954* 23.35 ± 2.30
Range 15 - 21 20 - 28
• Comparison between the two groups by unpaired t-test.
• (*) Significant (P < 0.05).
Table 4: Post-operative morphine consumption by PCA (Mean ± SD).