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Breathing trouble after gallbladder surgery? study tracks Diaphragm's role

NCT ID NCT07332728

Knowledge-focused Sponsor: Istinye University Source: ClinicalTrials.gov ↗

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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.
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Not open to general applications. Only people the study team invites can take part.
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Paused for now. It may or may not start again.
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Running, but no longer taking on new participants.
Completed
The trial has finished. Results may not be published yet.
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Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

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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

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Status unknown
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First seen Jun 27, 2026 · Last updated Jun 27, 2026

Summary

This study watches how the diaphragm moves before and after gallbladder removal surgery. It checks if changes in movement are linked to lower oxygen levels after the operation. About 62 adults having planned surgery will take part. No new treatment is tested—only measurements are taken.

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 62 people

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

Expected to start

Jan 2026

An estimate. Start dates often move.

Expected to finish

Apr 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.

Who is studied

The study population consists of adult patients aged 18-75 years undergoing elective laparoscopic cholecystectomy under general anesthesia at a tertiary care center. Eligible participants are patients without known diaphragmatic dysfunction or severe underlying pulmonary disease, in whom perioperative diaphragm ultrasonography and postoperative oxygenation measurements can be reliably performed. All participants provide written informed consent and receive standard perioperative care without any study-related intervention.

Ages

18 to 75 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: * Adults aged 18-75 years * Scheduled for elective laparoscopic cholecystectomy under general anesthesia * Able to undergo diaphragm ultrasonography (no preoperative barrier to assessment) * Able to cooperate with preoperative and early postoperative diaphragm measurements * Postoperative oxygenation data available (SpO₂, FiO₂, and SpO₂/FiO₂ can be recorded) * Provided written informed consent Exclusion Criteria: * Morbid obesity (BMI ≥ 40 kg/m²) * Known diaphragmatic paralysis, phrenic nerve injury, or hemidiaphragm dysfunction * Severe COPD, restrictive lung disease, or advanced parenchymal lung disease * Preoperative home oxygen therapy or CPAP/BiPAP/home mechanical ventilation * Conversion to open surgery (laparoscopic → open) * Hemodynamic instability preoperatively or intraoperatively; emergency/complicated surgery * Factors preventing ultrasound assessment (e.g., marked upper abdominal gas, large scar/wound, severe subcutaneous edema) * Same-day discharge cases with \<24-hour observation * Inability to complete measurements (e.g., severe cognitive impairment, poor cooperation, severe pain preventing measurement) * Incomplete data not compatible with the protocol

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As listed by the trial registrant

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

Perioperative diaphragmatic excursion

How to take part

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  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

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Contacts and locations

Locations

  • Istinye Üniversity

    Istanbul, Merkez Mahallesi, 34250, Turkey (Türkiye)