No more Breath-Holding? new lung scan tested for patients on breathing support

NCT ID NCT07489950

Completed Diagnosis Sponsor: Ruijin Hospital Source: ClinicalTrials.gov ↗

First seen Jun 25, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This study tests a new method to measure lung blood flow using electrical impedance tomography (EIT) without requiring patients to hold their breath. Twenty-four adults on respiratory support will receive a salt-water injection and have their lungs scanned during normal breathing and during a brief breath-hold. The goal is to see if the no-breath-hold method gives results as accurate as the standard breath-hold method, which could make lung monitoring safer and easier for critically ill patients.

What this could mean

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

Active substance: saline (salt water) injection
What this could lead to: If successful, this could allow doctors to monitor lung blood flow in patients who cannot hold their breath, improving safety and comfort during critical care.
What could go wrong: This is a small, early-stage study with only 24 participants. The new method may not match the accuracy of the standard breath-hold technique, and results may not apply to all patients.

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Conditions

The condition(s) this trial relates to.

Critical Illness respiratory failure

As listed by the trial registrant

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

CRITICAL ILLNESS PULMONARY PERFUSION RESPIRATORY INSUFFICIENCY VENTILATION-PERFUSION RATIO

Contacts and locations

Locations

Department of Critical Care Medicine，Ruijin Hospital，Shanghai Jiao Tong University School of Medicine

Shanghai, Shanghai Municipality, 200025, China

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