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Neck ultrasound may guide fluid delivery during surgery

NCT ID NCT05185141

Knowledge-focused Sponsor: Johannes Gutenberg University Mainz Source: ClinicalTrials.gov ↗

What the study statuses mean

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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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 Jun 27, 2026

Summary

This study looks at whether a simple neck ultrasound can help doctors predict if a patient needs more fluids during major abdominal surgery. About 84 adults having planned abdominal surgery will take part. The goal is to see if changes in blood flow in the carotid artery can reliably show who will benefit from extra fluids, potentially reducing complications.

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

About 84 people

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

Started

Jan 2022

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.

Who is studied

Only patients scheduled for major abdominal surgery with an expected high intraoperative fluid turnover will be eligble for the study. Patients with any kind of crdiac arrhythmia, valve diseases, heart failure or carotid stenosis will be excluded from the study to avoid measurement errors and bias for the hemodynamic parameters such as pulse pressure variation, stroke volume and carotid doppler peak velocity.

Ages

18 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: * Age 18-80 years * written informed consent * scheduled major abdominal surgery Exclusion Criteria: * Age \<18 or \>80 years * pregnancy * SIRS or sepsis * any kind of cardiac arrhythmia * known valve disease * known heart failure * any kind of known carotid stenosis * carotid doppler peak velocity \>182 cm/s before baseline measurement (expected stenosis) * missing indication for invasive arterial blood pressure monitoring (IBP) not related to the study * peripheral artery disease (PAD) * BMI \> 35 kg/m2 * intraabdominal hypertension * ASA-PSC of 4 * severe lung disease (e.g. COPD grade 3, fibrosis) * esophageal disease of any kind * participation in another clinical study

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As listed by the trial registrant

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

Hemodynamic instability

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

  • Department of Anesthesiology, Johannes-Gutenberg University Medical Center

    RECRUITING

    Mainz, Rhineland-Palatinate, 55131, Germany

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