Group A(n=20) Group E (n=20) Group N (n=20) p value
Mephentermine used 1 (5%) 1 (5%) 12 (60%) 0.01*
Bradycardia 0 0 8 (40%) 0.01*
Tachycardia 1 (5%) 0 (0%) 0 (0%) 0.48
Other adverse effects 0 0 0  
Data described as number (percentage); *p<0.05 considered statistically significant.
Table 4: Intra operative events.