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New Radiation-Free lung scanner could transform monitoring of blood clot surgery

NCT ID NCT07577700

Knowledge-focused Sponsor: University of Sao Paulo General Hospital Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

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.
Paused
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 Results may not be published yet.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.
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This status has not been confirmed recently, so it may be out of date.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 26, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This study is testing whether a bedside imaging technique called electrical impedance tomography (EIT) can reliably measure blood flow in the lungs of patients with chronic blood clots. Thirty-six people scheduled for surgery to remove these clots will be monitored with EIT before and after the procedure. The goal is to see if EIT can provide useful information about lung blood flow without radiation or invasive procedures, potentially offering a safer way to track recovery.

What this could mean

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

Active substance
Electrical Impedance Tomography (EIT)
What this could lead to
If successful, this could provide a safer, bedside way to monitor lung blood flow in patients with chronic blood clots, reducing the need for radiation-based scans.
What could go wrong
This is a small, early-stage study (36 people) testing a diagnostic tool, not a treatment. It may not prove EIT is reliable enough for routine use, and results may not apply to all patients.

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.

Phase

Not a phased trial

Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.

Participants

About 36 people

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

Started

Feb 2025

Expected to finish

Dec 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.

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: \- Patients diagnosed with chronic thromboembolic pulmonary hypertension (CTEPH) followed at the Pulmonology Service of InCor-HCFMUSP and scheduled for pulmonary thromboendarterectomy at InCor-FMUSP. Exclusion Criteria: * Age under 18 years * Pregnancy * Structural heart disease (atrial septal defect, ventricular septal defect, or valvular heart disease) * Cardiac arrhythmias * Use of a cardiac pacemaker or other implantable electronic device * Skin lesions on the thoracic region at the site of EIT electrode belt placement * Absence of central venous access on the day of the preoperative protocol evaluation * Difficulty understanding the procedures to be performed * Refusal to participate in the study (non-signing of the Informed Consent Form) * Refusal by the attending medical team

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Conditions

The condition(s) this trial relates to.

chronic thromboembolic pulmonary hypertension pulmonary embolism thrombotic disease

As listed by the trial registrant

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

Pulmonary embolism and thrombosis Pulmonary thromboendarterectomy

How to take part

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

  1. The places running it

    1 site. 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

  • Instituto do Coração do Hospital das Clínicas da Faculdade de Medicina da USP

    RECRUITING

    São Paulo, São Paulo, 05403-900, Brazil

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