This research study is being done in order to find out if there is any difference in the effectiveness of ultrasound guided supraclavicular brachial plexus nerve block that can be achieved with 3 different amounts of ropivacaine 0.5% (20 ml, 30 ml, and 40 ml). The investigators want to show if you can have a successful nerve block with less amount of local anesthetic, thus potentially decreasing the risk of side effects.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
SINGLE
Patient will receive 20 ml of ropivacaine 0.5% for their ultrasound guided supraclavicular block.
Patient will receive 30 ml of ropivacaine 0.5% for their ultrasound guided supraclavicular block.
Patient will receive 40 ml of ropivacaine 0.5% for their ultrasound guided supraclavicular block.
Ben Taub General Hospital
Houston, Texas, United States
Onset of analgesia
Time frame: First 30 minutes
Duration of analgesia
Time frame: 24 hours
Total analgesic use
Time frame: First 24 hours
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