The Effect of Interscalene Peripheral Nerve Block With 0.25% Bupivacaine vs 0.125% Bupivacaine on Lung Function

• Status: Completed
• Trial end date: 2010-02-01
• Target enrollment: 0
• Participant gender: All

Summary

Peripheral nerve blocks are used to provide post-operative pain relief. Nerve blocks in the neck, in the interscalene area, provide pain relief after shoulder surgery but can cause temporary weakness or paralysis of the diaphragm. The investigators hypothesized that a lower concentration of bupivacaine would cause less weakness of the diaphragm but still provide good pain relief. Lung function and pain control was studied after interscalene peripheral nerve block with 20 milliliters of 0.25% bupivacaine or 0.125% bupivacaine.

• Phase: N/A
• Accepts Healthy Volunteers?: Accepts Healthy Volunteers

Details

• Lead Sponsor: University of Utah
• Treatments: Bupivacaine

Criteria

Inclusion Criteria:

• patients presenting for outpatient rotator cuff repair

• adults

• English as the primary language

Exclusion Criteria:

• evidence of peripheral nerve damage on affected side

• refusal of peripheral nerve block

• pregnant women

• lung disease, including obstructive sleep apnea

• chronic opioid use

• mental handicap