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Sugar water vs. salt water: which makes pain blocks last longer?

NCT ID NCT07386327

Symptom relief Sponsor: Burçin Alaçam, MD 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 25, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This study compares two ways to dilute the numbing drug bupivacaine for a nerve block used during arm surgery. Researchers want to see if using sugar water (5% dextrose) instead of salt water (0.9% saline) affects how well and how long the block works. About 90 adults having elective upper arm surgery will take part.

What this could mean

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

Active substance
bupivacaine diluted with 5% dextrose or 0.9% saline
What this could lead to
If successful, this could show that using dextrose as a diluent improves pain relief after arm surgery.
What could go wrong
This is a small, early-stage study. The results may not apply to all patients or surgeries, and the effect may be minimal.

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 90 people

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

Started

Mar 2026

Expected to finish

Jul 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 to 65 years

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 who agree to participate in the study and provide written informed consent * Patients scheduled for elective upper extremity surgery for whom infraclavicular block is considered appropriate for anesthetic management * Age between 18 and 65 years * American Society of Anesthesiologists (ASA) physical status I-III * Patients with a normal neurological examination in the extremity scheduled for peripheral nerve block Exclusion Criteria: * Patients who decline to participate in the study or refuse to provide informed consent * History of allergy or hypersensitivity to study medications * Body mass index (BMI) ≥ 30 kg/m² * Body weight less than 40 kg * Age below 18 years or above 65 years * History of significant cardiac disease (e.g., arrhythmia, conduction disorders) * Presence of coagulopathy (international normalized ratio \[INR\] \> 1.5 and/or platelet count \< 100,000/mm³) * Hepatic failure or significant liver dysfunction * Pregnant patients * Infection at the planned peripheral block site * Presence of neurological deficit in the extremity planned for peripheral nerve block * Patients with uncontrolled diabetes mellitus and/or established diabetic neuropathy * American Society of Anesthesiologists (ASA) physical status IV

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Conditions

The condition(s) this trial relates to.

atrioventricular block

As listed by the trial registrant

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

Block success Bupivacaine Dextrose Infraclavicular brachial plexus block Postoperative analgesia

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

  • Sakarya University-Anesthesiology and Reanimation Department

    RECRUITING

    Sakarya, 54100, Turkey (Türkiye)

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