The duration of sensory block of group R was10.74 ± 2.64 minutes, group B was 14.20 ± 4.39 minutes, meanwhile, the duration of motor block of group R was 110.01±13.52 minutes, group B was 140.93 ± 16.53 minutes with p<0.05.
Thời gian đạt phong bế cảm giác nhóm R 10,74 ± 2,64 phút, nhóm B 14,20 ± 4,39 phút, thời gian phong bế vận động nhóm R 110,01 ± 13,52 phút, nhóm B 140,93 ± 16,53 phút với p < 0,05.