New shoulder block may spare your diaphragm
NCT ID NCT07486349
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study tests two types of nerve blocks for shoulder surgery to see which one is less likely to temporarily paralyze the diaphragm, the main muscle for breathing. About 70 adults having elective shoulder surgery will be randomly assigned to receive either a standard interscalene block or a newer shoulder PENG block. The goal is to find a safer way to numb the shoulder while reducing breathing complications.
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Study facts
What this study's own registry entry says, in plain language.
- Phase
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Not a phased trial
Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.
- Participants
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About 70 people
The number the study aims to enrol. It can still change while the study runs.
- Expected to start
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Apr 2026
An estimate. Start dates often move.
- Expected to finish
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Dec 2026
An estimate. End dates often move.
- 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 to 75 years
- 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: * ASA physical status I-III * Scheduled for elective shoulder surgery under general anesthesia * Able to provide informed consent Exclusion Criteria: * Pre-existing diaphragmatic dysfunction * Severe COPD or restrictive pulmonary disease * Neuromuscular disorders * BMI \> 40 kg/m² * Coagulopathy * Infection at injection site * Allergy to local anesthetics * Inability to undergo diaphragmatic ultrasound assessment
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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.
How to take part
Only the study team decides who joins. These are the ways to reach them.
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The official record
The full official record for this study. This one lists no contact details, but it is the first place any would appear.
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A doctor treating you
A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.
More trials for these conditions
Other studies related to the condition(s) this trial covers.
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- New study aims to find safer pain block for shoulder surgery
- Shoulder block study checks for breathing side effects
- Shoulder surgery nerve block showdown: which one spares your diaphragm?
- Which arm block spares the diaphragm? new study pits two techniques Head-to-Head