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Obesity lung pressure study pulled before starting

NCT ID NCT04213911

Knowledge-focused Sponsor: Massachusetts General Hospital Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now
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 Results may not be published yet.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 This study
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This status has not been confirmed recently, so it may be out of date.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 aimed to measure pressure inside the chest (pleural pressure) in people with morbid obesity using a low-dose CT scan and a thin balloon placed in the esophagus. Researchers planned to compare 6 people with a BMI over 40 to 6 people with a BMI under 30. The study was withdrawn before enrolling anyone, so no results are available.

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.

Expected to start

Mar 2023

An estimate. Start dates often move.

Expected to finish

Dec 2023

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

Subjects who are scheduled to take a chest CT scan without known lung disease. Morbid obesity will be defined as subjects with BMI \> 40 kg/m2 and non-obese will be defined as be subjects with BMI \< 30 kg/m2.

Ages

18 to 99 years

Sex

Anyone

Healthy volunteers

Accepted

You do not need to have the condition being studied to take part.

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 who are scheduled to take a chest CT scan for the clinical purpose at MGH Radiology Department * 6 adult subjects with BMI more than 40kg/m2 * 6 adult subjects with BMI less than 30kg/m2 * More than 18 years old Exclusion Criteria: * Presence of pneumothorax * History of spontaneous pneumothorax * Severe coagulopathy (INR ≥ 4) * Severe thrombocytopenia (Platelets count ≤ 5,000/mm3) * Usage of any devices with electric current generation such as pacemakers or internal cardiac defibrillator * Recent esophageal trauma or surgery * Other esophageal diseases, such as esophageal cancer, leak, varices, and hernia * Presence of hypoxemia, short of breath and dysphagia. * Presence or suspicion of pneumonia or lung fibrosis.

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Conditions

The condition(s) this trial relates to.

morbid obesity respiratory failure

As listed by the trial registrant

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

Morbid obesity Respiratory failure

Contacts and locations

Locations

  • Massachussets General Hospital

    Boston, Massachusetts, 02114, United States

More trials for these conditions

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