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New anesthetic may spare the diaphragm during arm surgery

NCT ID NCT07263295

Knowledge-focused Sponsor: Zhejiang University Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now This study
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jun 27, 2026 · Last updated Aug 04, 2026 · Updated 2 times

Summary

This study compares two types of numbing medicine for upper limb surgery: a standard one and a longer-acting version. Researchers want to see how quickly the diaphragm (the main breathing muscle) recovers after the nerve block. 120 adults having arm or hand surgery will be split into two groups and monitored for breathing function and pain. The goal is to find out if the newer anesthetic causes less breathing trouble.

What this could mean

Our plain-language read of the trial. This is informational only, not medical advice or a prediction.

Active substance
Liposomal bupivacaine and standard bupivacaine (hydrochloride bupivacaine)
What this could lead to
If successful, this could help doctors choose a nerve block that reduces breathing side effects after upper limb surgery.
What could go wrong
This is an early observational study, not a treatment trial. It only measures recovery times and may not lead to changes in practice.

This is an AI summary of the original study and may miss details. Read our disclaimer.

Study facts

What this study's own registry entry says, in plain language.

Phase

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

About 120 people

The number the study aims to enrol. It can still change while the study runs.

Started

Dec 2025

Expected to finish

Aug 2026

An estimate. End dates often move.

Lead sponsor

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

18 years and older

Sex

Anyone

Healthy volunteers

Not accepted

This study is not open to healthy volunteers. The entry requirements below say who it is open to.

Show the full entry requirements

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: * Patients undergoing upper limb surgery scheduled for interscalene brachial plexus block * Aged ≥ 18 years * American Society of Anesthesiologists (ASA) physical status I-III Exclusion Criteria: * Known allergy or intolerance to amide local anesthetics * Nerve injury in the upper limb on the surgical side * Coagulopathy * Used opioid medications continuously for more than 3 weeks before surgery * History of pulmonary disease and a pulse oxygen saturation (SpO₂) \< 95% (measured after 5 minutes of rest at room temperature without oxygen supplementation, using a transcutaneous pulse oximeter) * Refuse to participate or are deemed unsuitable for this trial by the researchers Withdrawal Criteria: * Patients voluntarily withdrew their informed consent * Surgery was canceled or the anesthesia method was changed due to surgical factors before interscalene brachial plexus block

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Conditions

The condition(s) this trial relates to.

chronic ulcer of skin radius fracture

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Chronic ulcer Diaphragmatic function Metacarpal fracture Peripheral nerve neurolysis Radius fracture Upper extremity ligament injury

How to take part

Only the study team decides who joins. These are the ways to reach them.

  1. The places running it

    1 site. The list below names each one and where it is.

  2. The official record

    ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.

    Open the record ↗

  3. 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.

Contacts and locations

Locations

  • The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, zhejiang 310000

    RECRUITING

    Hangzhou, Zhejiang, 310000, China

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