Table 2: Comparison of local anesthetic volume (LAV) used and effectiveness of the ultrasound-guided infraclavicular brachial plexus block between groups I, II, III, and IV.

Group IGroup IIGroup IIIGroup IVp
Mean ± SD, n (%)MedianMean ± SD, n (%)MedianMean ± SD, n (%)MedianMean ± SD, n (%)Median

Local anesthetic volume (ml)33.7 ± 4.23532.7 ± 4.13032.4 ± 3.83032.0 ± 4.0300.000
LAV
≤3030548.6%43564.7%47170.1%61691.7%0.000
>3032351.4%23735.3%24929.9%3178.3%
Result
Effective60896.8%66498.8%71599.3%92899.5%0.000
Ineffective203.2%81.2%50.7%50.5%

Data were analyzed using the Kruskal–Wallis (Mann–Whitney U test) or chi-square test.