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. 2019 Nov 8;63(11):924–931. doi: 10.4103/ija.IJA_327_19

Table 2.

Comparison of both groups in terms of technical difficulty, efficacy, safety and comfort

Outcome Group A Group B P
Attempts Mean 1.5±0.9 1.2±0.6 0.013
1st attempt 78 (74.3%) 90 (85.7%) 0.038
More than one attempts 2 attempts 10 (9.5%) 08 (7.6%) 0.013
3 attempts 11 (10.5%) 06 (5.7%) 0.030
More than 3 attempts 06 (5.7%) 1 (1%)
Passes Mean 2.2±1.7 1.8±1.2 0.022
1st pass 52 (49.52%) 64 (60.9%) 0.095
More than one pass 2ND pass 22 (20.9%) 19 (18.1%) 0.022
3RD pass 10 (9.5%) 12 (11.4%)
4TH pass 7 (6.7%) 5 (4.8%)
>4TH pass 14 (13.3%) 5 (4.8%) 0.030
Experience of anaesthesiologist Mean 13.7±6.1 13.2±7.2 0.660
2-5 years 15 (14.3%) 26 (24.8%)
6-10 years 4 (3.8%) 8 (7.6%)
11-15 years 52 (49.5%) 34 (32.4%)
16-20 years 21 (20%) 21 (20%)
21-30 years 13 (12.4%) 16 (15.2%)
No of anaesthesiologist Mean 1.1±0.4 1.0±0.2 0.044
One 96 (91.4%) 102 (97.1%)
More than 1 9 (8.6%) 3 (2.9%)
Pain scores Patient satisfaction score 4.1±0.8 4.4±0.6 0.019
Vas score 1.0±0.1 1.0±0.1 0.157
Complications Total 8 (7.6%) 0 0.003
Failed block 2 (1.9%) 0 0.498
Accidental dural puncture 6 (5.7%) 0 0.013

Group A - Control group , Group B – Ultrasound group