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Which pain block wins for liver surgery? new trial aims to find out

NCT ID NCT07615231

Symptom relief Sponsor: Seoul National University Hospital Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now
This trial is taking on new participants right now.
Not yet recruiting This study
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 Jun 27, 2026

Summary

This study compares two ultrasound-guided nerve blocks—the External Oblique Intercostal (EOI) block and the Subcostal Transversus Abdominis Plane (TAP) block—for pain relief after minimally invasive liver surgery. 140 adults will be randomly assigned to receive one of the blocks with a local anesthetic. The main goal is to see which block reduces opioid use in the first 24 hours after surgery. The trial also tracks pain scores, nausea, and recovery time.

What this could mean

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

Active substance
Ropivacaine (a local anesthetic) injected via two different nerve block procedures
What this could lead to
If one block works better, it could lead to less opioid use and faster recovery after minimally invasive liver surgery.
What could go wrong
This is a small, early-stage trial (140 people) comparing two established techniques, so the difference may be small or not apply to all patients.

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 140 people

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

Expected to start

Jun 2026

An estimate. Start dates often move.

Expected to finish

Jun 2027

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

20 to 80 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: Scheduled to undergo elective robotic or laparoscopic minimally invasive hepatectomy Exclusion Criteria: * American Society of Anesthesiologists physical status IV or higher * History of chronic pain or current use of analgesics, antidepressants, or anticonvulsants for pain management * Known hypersensitivity to general anesthetics, opioids, or local anesthetics * Conversion to open hepatectomy * Requirement for mechanical ventilation for more than 2 hours within 48 hours postoperatively * Any other clinical condition that makes the patient unsuitable for participation in the study.

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As listed by the trial registrant

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

Hepatectomy

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

  • SNUH

    Seoul, 03080, South Korea

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