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Two veins, one ultrasound: can blood flow patterns reveal hidden congestion in ICU patients?

NCT ID NCT07826481

Diagnosis Sponsor: Hospital Universitario de Gran Canaria Doctor Negrín 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 This study
Registered, but not yet taking participants.
By invitation only
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Paused for now. It may or may not start again.
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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 Results may not be published yet.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)

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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
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Status unknown
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First seen Sep 17, 2026 · Last updated Sep 18, 2026 · Updated 1 time

Summary

Venous congestion is common in critically ill patients recovering from surgery and can lead to worse outcomes. This observational study uses Doppler ultrasound to measure blood flow pulsatility in two abdominal veins, the portal vein and the splenic vein, in adults admitted to a postoperative intensive care unit. Researchers want to know whether the two measurements correlate, which could help doctors assess congestion at the bedside. Ultrasound scans are added to standard care and do not change treatment.

What this could mean

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

Active substance
Doppler ultrasound examination of the portal and splenic veins
What this could lead to
If the two flow patterns track together, doctors may gain a simpler bedside way to spot venous congestion in intensive care patients after surgery.
What could go wrong
This is a small observational study of 60 patients, so it can only show a link, not prove that the ultrasound measure improves care. Results may not apply to patients with liver disease or prior spleen problems.

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 60 people

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

Expected to start

Nov 2026

An estimate. Start dates often move.

Expected to finish

Dec 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.

Who is studied

Adult patients admitted to the postoperative intensive care unit after major surgery. Participants will undergo Doppler ultrasound assessment of portal and splenic venous pulsatility during the early postoperative period to evaluate the relationship between venous pulsatility patterns and systemic venous congestion.

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.

nclusion Criteria: Adults aged ≥18 years. Admission to the postoperative intensive care unit within 72 hours after surgery. Adequate abdominal ultrasound window allowing visualization of the portal vein and splenic vein. Written informed consent provided by the patient or legally authorized representative according to local regulations. Exclusion Criteria: Known chronic liver disease or previous portal hypertension. Previous pathological splenomegaly or prior splenectomy. Recent hepatic or splenic surgery during the same hospitalization. Known portal or splenic vein thrombosis. Absence of an adequate ultrasound window after two attempts by trained operators. Death or discharge from the intensive care unit before completion of the first protocolized ultrasound assessment.

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Conditions

The condition(s) this trial relates to.

Hyperemia

As listed by the trial registrant

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

Postoperative care Venous congestion

How to take part

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  1. The official record

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