Ultrasound Guidance Vs. Electrical Nerve Stimulation for Infraclavicular Brachial Plexus Block

In an observer-blinded study ultrasound guidance and electrical nerve stimulation will be compared for lateral sagital infraclavicular blocks (LSIB). Block effectiveness, time consumption and patient acceptance will be registered in 80 patients. Ultrasound guidance may cause less discomfort and could be less time consuming than electrical nerve stimulation.

Inclusion Criteria:

• Infraclavicular brachial plexus block
• Hand surgery

Exclusion Criteria:

• ASA > 2
• Block assessment impossible
• Allergy to local anesthetic