Different Learning Curves for Axillary Brachial Plexus Block: Ultrasound Guidance versus Nerve Stimulation

<table>Institutional learning curve of the mixed group compared to the nerve stimulation group. Note: the different endpoints of the curves reflect that more blocks beyond 40 attempts were evaluated in the nerve stimulation groups.</table>

Anesthesiology Research and Practice

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Figure 3

Figure 3: Different Learning Curves for Axillary Brachial Plexus Block: Ultrasound Guidance versus Nerve Stimulation 