Less numbing medicine may keep diaphragm working during shoulder surgery
NCT ID NCT04173364
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study tested whether using a smaller amount of a weaker numbing medicine (ropivacaine) during a shoulder nerve block could reduce the risk of temporary diaphragm paralysis. 60 adults having shoulder surgery took part. The goal was to see if the low-dose approach could still provide pain relief while protecting diaphragm function.
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Study facts
What this study's own registry entry says, in plain language.
- Phase
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Phase 3
Large-scale testing in a bigger group. Usually the last step before a treatment can be approved.
- Participants
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60 people
The number who actually took part.
- Started
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Oct 2019
- Finished
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Sep 2020
- Lead sponsor
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Other sponsor
The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
- Ages
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18 years and older
- Sex
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Anyone
- Healthy volunteers
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Not accepted
This study is not open to healthy volunteers. The entry requirements below say who it is open to.
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Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: * orthopedic surgery compatible with interscalene block * french speaking * Patient who signed consent to participate in the study Exclusion Criteria: * Pregnant woman * ASA score \> 3 * Severe chronic respiratory insufficiency * COPD \>3 or 4 of Gold score * coagulation trouble * Allergic to medication involved in the study * Breastfeeding women
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
Contacts and locations
Locations
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Hôpital Roger Salengro, CHU
Lille, France
More trials for these conditions
Other studies related to the condition(s) this trial covers.