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Ultrasound could help doctors track blood loss during spine surgery

NCT ID NCT07549165

Knowledge-focused Sponsor: Trabzon Kanuni Education and Research Hospital Source: ClinicalTrials.gov ↗

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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.
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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 Results may not be published yet.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.
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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
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First seen Jun 27, 2026 · Last updated Jun 27, 2026

Summary

This study looks at whether a simple ultrasound test can help doctors monitor blood volume changes in patients having lower back surgery. About 128 adults will have their blood vessels measured before, during, and after surgery. The goal is to find a non-invasive way to predict drops in blood pressure and improve patient safety.

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 128 people

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

Started

Feb 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.

Who is studied

Adult patients (≥18 years) scheduled for elective lumbar spine stabilization surgery under general anesthesia at Trabzon University Faculty of Medicine Hospital will be included in this study. All participants will be classified as ASA physical status I-II-III and will undergo surgery in the prone position. Inferior vena cava (IVC) diameter and collapsibility index will be measured using ultrasonography at predefined perioperative time points.

Ages

18 years and older

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 years * Patients classified as ASA physical status I-II-III * Patients scheduled for elective lumbar spine stabilization surgery under general anesthesia * Ability to obtain adequate inferior vena cava (IVC) ultrasonographic imaging * Provision of written informed consent Exclusion Criteria: * Age younger than 18 years * Emergency surgery * American Society of Anesthesiologists (ASA) physical status IV * Patients undergoing revision lumbar stabilization surgery * Baseline systolic blood pressure \>180 mmHg or \<90 mmHg * Heart failure with ejection fraction (EF) \<40% * Pulmonary artery pressure (PAP) \>40 mmHg * Presence of intra-abdominal mass, ascites, or increased intra-abdominal pressure * Body mass index (BMI) \>30 kg/m² * Pregnancy * Patients with neurological or psychiatric disorders * Inability to obtain adequate inferior vena cava (IVC) ultrasonographic imaging * Refusal to provide written informed consent

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As listed by the trial registrant

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

Hemodynamic changes Intravascular volume status Lumbar spine surgery

How to take part

Only the study team decides who joins. These are the ways to reach them.

  1. The places running it

    2 sites. 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

  • Trabzon University Faculty of Medicine Kanunı Training and Research Hospital ,Trabzon

    RECRUITING

    Trabzon, 61080, Turkey (Türkiye)

  • Trabzon University Faculty of Medicine, Kanuni Training and Research Hospital

    RECRUITING

    Trabzon, 61080, Turkey (Türkiye)

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