Ultrasound of the portal vein may reveal fluid tolerance in critical care

NCT ID NCT07131228

Not yet recruiting Knowledge-focused Sponsor: Hospital Universitario de Gran Canaria Doctor Negrín Source: ClinicalTrials.gov ↗

First seen Jul 06, 2026 · Last updated Jul 07, 2026 · Updated 1 time

Summary

This study investigates whether a temporary increase in tidal volume (from 6 to 8 mL/kg) can help predict fluid tolerance in critically ill patients on mechanical ventilation. The researchers will use Doppler ultrasound to measure changes in the portal vein's pulsatility index, a marker of venous congestion. The goal is to see if this test can identify patients who might be harmed by additional fluids, potentially improving fluid management in the ICU.

What this could mean

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

What this could lead to: If successful, this could give doctors a simple, non-invasive way to predict whether giving fluids will harm or help critically ill patients.
What could go wrong: This is a small, early-stage study (60 participants) focused on a specific ICU population. The findings may not apply to other patients or settings.

This is an AI summary of the original study and may miss details. Read our disclaimer.

Get updates

Get notified about this study

Sign up to get updates when this study changes or when new studies for VENOUS CONGESTION are added.

Our safety recommendation!

By submitting, you agree to our Terms of use

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.

VENOUS CONGESTION

Contacts and locations

Show contact details

Study contacts

Contact

Phone: •••-•••-•••• Email: •••••@•••••

More trials for these conditions

Other studies related to the condition(s) this trial covers.