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Can a neck ultrasound replace invasive fluid monitors in bypass surgery?

NCT ID NCT07245485

Knowledge-focused Sponsor: Ankara City Hospital Bilkent 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
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 Jun 27, 2026 · Last updated Jun 27, 2026

Summary

This completed study with 50 adults undergoing coronary bypass surgery tested whether a neck ultrasound (corrected carotid flow time) and a simple leg-raising maneuver can reliably show if a patient needs more fluids. The goal was to find a non-invasive alternative to standard invasive monitoring. Results will help guide future fluid management during heart surgery.

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

50 people

The number who actually took part.

Started

Dec 2025

Finished

Feb 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

A total of 50 patients undergoing elective coronary artery bypass surgery under general anesthesia in the Cardiovascular Surgery operating room

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: A total of 50 patients undergoing elective coronary artery bypass surgery under general anesthesia in the Cardiovascular Surgery operating room of the Ministry of Health Ankara Bilkent City Hospital will be included in the study. The volunteers to be included will be patients aged between 18 and 80 years, evaluated as ASA class II-III according to the American Society of Anesthesiologists (ASA) classification. Exclusion Criteria: Patients who do not wish to participate in the study Patients younger than 18 or older than 80 years Patients with an ASA score greater than III Patients with BMI \> 35 Patients with EF \< 40% Patients with atrial fibrillation Patients with severe valvular stenosis or insufficiency Patients with right ventricular dysfunction Patients with carotid artery stenosis Patients with a history of cerebrovascular accident or transient ischemic attack Patients with increased intra-abdominal or intracranial pressure Patients with glaucoma Patients with severe renal or hepatic disease Patients who develop hemodynamic instability during the perioperative period Pregnancy

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Conditions

The condition(s) this trial relates to.

coronary artery disorder

As listed by the trial registrant

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

Corrected carotid flow time Fluid responsiveness Passive leg raising

Contacts and locations

Locations

  • Ankara Bilkent City Hospital Department of Anesthesiology and Reanimation, Ankara, Çankaya

    Ankara, Çankaya, 06800, Turkey (Türkiye)

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