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Muscle mass on CT scans may guide safer anesthesia dosing

NCT ID NCT06740877

Knowledge-focused Sponsor: Seoul National University Bundang Hospital Source: ClinicalTrials.gov ↗

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Recruitment status, easiest to join first

Recruiting now
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 This study
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 Aug 21, 2026 · Last updated Aug 21, 2026

Summary

This study looks at whether the amount of muscle a person has, measured from a routine CT scan, can predict how much of a muscle relaxant drug they need during surgery. Researchers will measure muscle mass in about 90 adults scheduled for colon surgery and compare it to the dose of rocuronium required to maintain deep muscle relaxation. The goal is to see if a simple imaging measurement could help doctors tailor anesthesia dosing to each patient.

What this could mean

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

Active substance
rocuronium (a neuromuscular blocking agent used during general anesthesia)
What this could lead to
If muscle mass from CT scans predicts drug needs, doctors could personalize anesthesia dosing, improving safety and recovery.
What could go wrong
This is a small observational study, so results may not apply broadly. The link between muscle mass and drug dose might be weak or influenced by other factors.

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.

Participants

90 people

The number who actually took part.

Started

May 2025

Finished

Jun 2026

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.

Who is studied

Patients scheduled for elective colon surgery under general anesthesia

Ages

19 to 85 years

Sex

Anyone

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: * Those who voluntarily agreed and signed the written consent form before participating in the study * American Society of Anesthesiologists physical class (ASA class) 1-3 * Patients scheduled for elective colon surgery under general anesthesia * Patients undergoing abdominal computed tomography for routine preoperative preparation Exclusion Criteria: * Pregnant women * Decreased renal function (GFR\<60mL/min/1.73m2). * Patients taking drugs that affect deep neuromuscular blockade * Patients with a history of neuromuscular and muscle disorders

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As listed by the trial registrant

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

Neuromuscular blockade

Contacts and locations

Locations

  • Seoul National University Bundang Hospital

    Seongnam-si, Gyeonggi-do, 13620, South Korea

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