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New breathing technique aims to cut lung risks in obesity surgery

NCT ID NCT07207772

Prevention Sponsor: Jianbo Wu 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 25, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This study tests whether a personalized ventilation method using electrical impedance tomography (EIT) can prevent lung complications after laparoscopic gastric sleeve surgery. About 118 adults with obesity will be randomly assigned to receive either EIT-guided ventilation or standard fixed-pressure ventilation. The main goal is to see if the EIT-guided approach reduces the rate of lung problems like pneumonia or respiratory failure within 72 hours after surgery.

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)-guided PEEP titration
What this could lead to
If successful, this could lead to a standard way to set ventilator settings during obesity surgery, reducing lung complications.
What could go wrong
This is a small, early-stage study (118 participants) at a single center. The approach may not work better than standard care, and results may not apply to other surgeries or hospitals.

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 118 people

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

Started

Jul 2025

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.

Ages

18 to 65 years

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: 1. Age between 18 and 65 years; 2. Plan to receive laparoscopic bariatric surgery under general anesthesia; 3. American Society of Anaesthesiologists (ASA) physical status I-III; 4. BMI between 30 and 55 kg/m2; 5. Voluntary participation in this study and signing of an informed consent form. Exclusion Criteria: 1. History of smoking or previous thoracic surgery; 2. Invasive mechanical ventilation within 30 days; 3. Pregnancy; 4. Allergy to EIT electrodes; 5. Persistent hemodynamic instability or refractory shock; 6. Severe cardiopulmonary disease (e.g., severe COPD (Chronic obstructive pulmonary disease), NYHA (New York Heart Association) Class III or IV, acute coronary syndrome, or sustained ventricular tachycardia); 7. Severe pulmonary hypertension (systolic pulmonary artery pressure \>40 mmHg); 8. Increased intracranial pressure, intracranial injury/tumor, or neuromuscular disorders; 9. Conversion to laparotomy; 10. Planned transfer to intensive care unit after surgery.

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Conditions

The condition(s) this trial relates to.

Obesity obesity disorder

As listed by the trial registrant

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

Electrical impedance tomography (EIT) Mechanical ventilation complication Obesity Postoperative pulmonary complications (PPCS) Recruitment

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

  • The First Affiliated Hospital of Shandong First Medical University & Shandong Provincial Qianfoshan Hospital

    RECRUITING

    Jinan, Shandong, 0531, China

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