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Oxygen levels during surgery: could less be more for patient safety?
NCT ID NCT07445698
First seen Jun 26, 2026 · Last updated Aug 11, 2026 · Updated 3 times
Summary
This study looked at whether using 80% oxygen instead of the usual 100% during the removal of a breathing tube (extubation) after laparoscopic colorectal surgery affects oxygen levels in the blood. Researchers monitored 60 patients with a special tool called the Oxygen Reserve Index to detect both high and low oxygen levels. The goal is to find the safest oxygen concentration to prevent complications like lung collapse or oxygen deficiency.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- oxygen administration
- What this could lead to
- If successful, this study could help determine the safest oxygen concentration to use during extubation, potentially reducing risks like low oxygen levels or lung collapse after surgery.
- What could go wrong
- This is a small, completed study with only 60 participants, so results may not apply to all patients. It focuses on monitoring rather than a new treatment, so direct patient benefits are limited.
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
-
60 people
The number who actually took part.
- Started
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Jan 2025
- Finished
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Feb 2026
- Lead sponsor
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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
Sixty volunteer patients, aged between 18 and 75, with a Body Mass Index (BMI) below 35 and ASA class I-III, who are scheduled to undergo elective laparoscopic colorectal surgery , will be included.
- Ages
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18 to 75 years
- Sex
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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 Hide 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: * Age: 18-75 * ASA: I-III * Scheduled for elective laparoscopic surgery * BMI \<35 Exclusion Criteria: * Patients undergoing emergency surgery due to trauma * Patients with ASA physical status classification IV or higher * Patients requiring intensive care unit admission * Patients with active, clinically symptomatic anemia * Patients with heart failure * Patients with known allergy to the sensor material to be used * Patients with difficult mask ventilation or difficult intubation * Patients with a platelet count below 30,000/mm³ * Patients with a history of gastrointestinal bleeding within the past 6 months * Patients with a history of bleeding diathesis or increased risk of intracerebral hemorrhage * Patients with oliguria and/or those who required dialysis or underwent dialysis within one month prior to surgery * Patients with a known hypersensitivity reaction to any anesthetic or analgesic drug used in the study * Patients who do not wish to participate in the study
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As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
Contacts and locations
Locations
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Kartal Dr. Lütfi Kırdar Eğitim ve Araştırma hastanesi
Istanbul, Kartal, 34865, Turkey (Türkiye)
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