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How deep should a temperature probe go? new study aims to find out

NCT ID NCT05552092

Knowledge-focused Sponsor: Chosun University 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 Jun 25, 2026 · Last updated Jul 22, 2026 · Updated 3 times

Summary

This study is testing the best depth to insert an esophageal stethoscope (a tube with a temperature sensor) to accurately measure core body temperature during surgery. Researchers will compare readings at different depths against a standard ear thermometer in 40 adults undergoing elective surgery. The goal is to find the most accurate placement for routine temperature monitoring.

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 could establish a simple, reliable method for measuring core temperature during surgery, improving patient monitoring.
What could go wrong
This is a small, early-stage study with only 40 participants, so results may not apply to all patients or surgical settings.

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

40 people

The number who actually took part.

Started

Nov 2022

Finished

Jul 2026

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

20 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: * The patients with ASA class 1-2 (20-65 years old) who are undergoing elective surgery with supine or lithotomy position, without position change scheduled to last more than 90 min. Exclusion Criteria: * anatomical abnormality with the upper airway * risks of a difficult airway * abnormal central anatomical structures such as airway, diaphragm, or spine on the chest X-ray * history of disease or surgery on the stomach or esophagus * risks of bleeding or coagulopathy on the preoperative laboratory results * obese patients with BMI over 30 * contraindication to insertion of ES for the surgery * who did not take a standing chest PA X-ray before surgery * position change during the surgery * open chest surgery

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As listed by the trial registrant

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

Surgery

Contacts and locations

Locations

  • Chosun University Hospital

    Gwangju, 61453, South Korea

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