ClinicalTrials.gov record

Completed Not applicable Interventional Accepts healthy volunteers Results available

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

ClinicalTrials.gov ID: NCT01429584

Public ClinicalTrials.gov record NCT01429584. Field values are reproduced from the official study page; the official ClinicalTrials.gov record remains the source of truth for eligibility, enrollment, and contact information.

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ClinicalTrials.gov public records Last synced Sep 8, 2026, 1:03 AM EDT

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Official title

Investigation Into the Effect of 0.25% Bupivacaine for Interscalene Peripheral Nerve Block vs 0.125% Bupivacaine on Pulmonary Function

Brief summary

Reproduced verbatim from the official ClinicalTrials.gov record. Not medical advice.

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.

Study identification

NCT ID: NCT01429584
Recruitment status: Completed
Study type: Interventional
Phase: Not applicable
Lead sponsor: University of Utah; Other
Enrollment: 30 participants

Conditions and interventions

Conditions

Diaphragm Paralysis

Interventions

Drug

Eligibility (public fields only)

Age range: 18 Years and older
Sex: All
Healthy volunteers: Accepts healthy volunteers

This page does not interpret eligibility. Detailed inclusion and exclusion criteria are on the official ClinicalTrials.gov record.

Study timeline

Start date: Apr 30, 2008
Primary completion: Jan 31, 2010
Completion: Jan 31, 2010
Last update posted: Dec 18, 2013

2008 – 2010

United States locations

U.S. sites: 1
U.S. states: 1
U.S. cities: 1

Facility	City	State	ZIP	Site status
University of Utah Orthopaedics Center	Salt Lake City	Utah	84108	—

Site contact phone numbers, emails, and investigator names are intentionally not displayed here. Open the official ClinicalTrials.gov record for site contact information.

About this trial record page

What this page shows: Public field values for ClinicalTrials.gov record NCT01429584, including study identification, conditions, interventions, eligibility (age, sex, healthy volunteer), timeline, and U.S. site list.
What this page does not do: No medical advice, eligibility judgments, treatment recommendations, study quality scoring, or AI-generated medical summaries. No site contact phone numbers, emails, or investigator names.
Where the data comes from: Sourced from the official ClinicalTrials.gov public API. The official record is the source of truth.
Last refresh: Last update posted Dec 18, 2013 · Synced Sep 8, 2026

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The complete protocol, eligibility criteria, and contact information for NCT01429584 live on ClinicalTrials.gov.

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