The duration of a "single-shot" brachial plexus block is highly variable, commonly lasting anywhere from 45 minutes to 24 hours. The block can be extended by placing an indwelling catheter, which may be connected to a mechanical or electronic infusion pump for continuous administration of local anesthetic solution. A catheter may be inserted at the interscalene, supraclavicular, infraclavicular or axillary location, depending on the desired location of nerve block. The infusion of local anesthetic can be programmed to be a continuous flow or patient-controlled analgesia. In some cases, people can maintain the catheters and infusions at home after release from the facility where the surgery was performed.
Read more about this topic: Anesthesia Of The Brachial Plexus
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