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Does your position during surgery affect your lungs? new study investigates

NCT ID NCT07654153

Knowledge-focused Sponsor: Cumhuriyet University 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 This study
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 Jul 22, 2026 · Updated 3 times

Summary

This study will use lung ultrasound to check how different surgical positions (lying on back, stomach, side, or in lithotomy) affect lung collapse after general anesthesia. Researchers will enroll 100 adults having planned surgery. The goal is to see if some positions are better than others at preventing lung collapse.

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 study could help doctors choose surgical positions that reduce the risk of lung collapse after surgery.
What could go wrong
This is an early observational study with only 100 participants. It does not test a treatment, so it may not lead to direct changes in patient care.

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.

Participants

About 100 people

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

Expected to start

Jul 2026

An estimate. Start dates often move.

Expected to finish

Aug 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.

Who is studied

The study will include a total of 100 patients in 4 groups, aged 18-65 years, with an ASA (American Society of Anesthesiologists) physical status between I and III, who are scheduled to undergo general anesthesia in supine, prone, lateral decubitus, and lithotomy positions.

Ages

18 to 80 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: * Being between 18-80 years of age * Having ASA I-III status * Planning elective surgery under general anesthesia * Agreeing to participate in the study and signing the consent form Exclusion Criteria: * Patients requiring emergency surgery * Patients with ASA IV or higher * Presence of a known serious preoperative lung disease (COPD, Asthma, Pneumonia, Pleural effusion, Pneumothorax, Interstitial lung disease, Bronchiectasis, etc.) * History of neuromuscular disease * Body Mass Index (BMI) \> 35 kg/m² (Morbid obesity) * Presence of chest wall deformity or skin lesions that would obstruct LUS imaging * Cases with an operative duration of less than 60 minutes or more than 300 minutes * Patients with a history of thoracotomy, sternotomy, or prior open thoracic surgery * Patients with alcohol or drug dependence * Patients with significant anemia * Patients who are pregnant or lactating * Patients who develop laryngospasm following extubation * Refusal to provide consent or inability to cooperate

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Conditions

The condition(s) this trial relates to.

middle lobe syndrome Pulmonary Atelectasis

As listed by the trial registrant

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

Atelectasis Lung ultrasound

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

  • Sivas Cumhuriyet University

    Sivas, Sivas, 58140, Turkey (Türkiye)

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