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Can a surgical tilt swell the airway? ultrasound study investigates

NCT ID NCT07794917

Knowledge-focused Sponsor: Izmir City Hospital Source: ClinicalTrials.gov ↗

What the study statuses mean

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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 This study
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 Aug 31, 2026 · Last updated Sep 01, 2026 · Updated 1 time

Summary

This observational study looks at whether the Trendelenburg position, where the operating table tilts head-down during laparoscopic hysterectomy, is linked to swelling of the upper airway. Researchers measure the airway with bedside ultrasound before and during surgery in women undergoing the procedure under general anesthesia. After surgery, they watch for breathing issues like noisy breathing or low oxygen levels. The study does not assign any treatment; it only observes standard care to see if the position affects airway health.

What this could mean

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

Active substance
Trendelenburg positioning during laparoscopic hysterectomy
What this could lead to
If a link is found, it could guide anesthesiologists to monitor airway swelling more closely during long surgeries in this position, potentially reducing breathing complications after surgery.
What could go wrong
This is a small observational study, so it cannot prove cause and effect. The results may not apply to other surgeries or patient groups, and the measurements may not predict real-world airway problems.

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

68 people

The number who actually took part.

Started

Feb 2026

Finished

May 2026

Lead sponsor

A government agency

The lead sponsor is a government body.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Who is studied

Adult female patients scheduled for elective laparoscopic hysterectomy under general anesthesia at Izmir City Hospital, University of Health Sciences, Izmir, Turkey.

Ages

18 to 65 years

Sex

Female participants only

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: * Female patients aged 18 to 65 years * Scheduled for elective laparoscopic hysterectomy * Planned surgery under general anesthesia * American Society of Anesthesiologists physical status I to III * Body mass index 35 kg/m² or lower * Provided written informed consent for study participation Exclusion Criteria: * Known history of difficult airway or expected difficult airway on preoperative evaluation * Mallampati class III or IV * Congenital or acquired upper airway pathology * Neck mass or previous neck surgery * Body mass index greater than 35 kg/m² * Pregnancy * Emergency surgery * Known chronic respiratory disease, such as chronic obstructive pulmonary disease or advanced asthma * Upper respiratory tract infection within the previous three weeks * Inability to communicate in Turkish * Lack of cooperation * Conversion to open surgery * Requirement for blood transfusion or additional fluid resuscitation beyond the standard protocol * Significant hypotension requiring vasopressor support * Persistent high peak airway pressures with ventilatory difficulty * More than two intubation attempts * Withdrawal from the study Exclusion Criteria: \-

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As listed by the trial registrant

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

Laparoscopic hysterectomy Postextubation stridor Upper airway edema

Contacts and locations

Locations

  • Izmir City Hospital

    Izmir, Turkey (Türkiye)

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