- Conditions
- Anesthesia, Local, Phrenic Nerve Paralysis, Upper Extremity Injury, Phrenic Nerve Palsy on the Left, Phrenic Nerve Palsy on the Right
- Interventions
- Normal saline injected via interscalene nerve catheter, Placebo
- Procedure · Other
- Lead sponsor
- Stanford University
- Other
- Eligibility
- 18 Years and older
- Enrollment
- 43 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2018 – 2022
- U.S. locations
- 1
- States / cities
- Palo Alto, California
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