Shoulder block study checks for breathing side effects
NCT ID NCT04209504
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study observes 60 adults having shoulder surgery to see how often a common nerve block (interscalene brachial plexus block) causes temporary paralysis of the diaphragm, the main breathing muscle. Participants are split into three groups receiving different types of local anesthetics. Researchers use ultrasound to check diaphragm movement right after surgery and for three days afterward. The goal is to understand which block method is safest for breathing.
What this could mean
Our plain-language read of the trial. This is informational only — not medical advice or a prediction.
Active substance
Ropivacaine and bupivacaine (local anesthetics)
What this could lead to
If successful, this could help doctors choose the safest nerve block method for shoulder surgery, reducing breathing complications.
What could go wrong
This is a small, early observational study, not a treatment trial. Results may not apply to all patients, and the nerve block itself carries rare risks like nerve damage or allergic reaction.
Disclaimer
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Summaries may miss details or leave out important information. Before applying or accepting participation, make sure you have read and understood the full study. Curemydisease.com takes no responsibility whatsoever for anything missed, misunderstood, or acted upon as a result of our summary — we know it does not capture everything.
This is a summary of the original study . Summaries may miss details or leave out important information. Before applying or accepting participation, make sure you have read and understood the full study. Curemydisease.com takes no responsibility whatsoever for anything missed, misunderstood, or acted upon as a result of our summary — we know it does not capture everything.
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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
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Study contacts
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Contact
Phone: •••-•••-•••• Email: •••••@•••••
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Contact
Phone: •••-•••-•••• Email: •••••@•••••
Locations
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Duke University Hospital
RECRUITINGDurham, North Carolina, 27710, United States
Contact Phone: •••-•••-•••• Email: •••••@•••••
Contact
Contact
Contact Phone: •••-•••-•••• Email: •••••@•••••
Contact