Table 2.

Sensory block

Parameters	Group B	Group L	Group R	P
				Group B versus L	Group B versus R	Group L versus R
Onset of sensory blockade at T8 (min)	2.30±0.48	2.35±33.91	3.02±0.48	0.732	0.0001	0.0001
Highest sensory level achieved (level of spinal segment)	4.4±0.621	5.2±0.76	5.33±0.60	0.0001	0.0001	0.456
Two segment regression time from highest block (min)	104±10.77	96.67±18.30	90.83±9.01	0.06	0.0001	0.0046
Time of regression to L1 (min)	162.67±12.78	153.33±23.68	108.33±12.01	0.845	0.0001	0.0001
Total duration of analgesia (min)	138.17±10.46	137.67±16.95	126.67±15.55	0.89	0.0001	0.01