Less oxygen during surgery may protect lungs in elderly patients
NCT ID NCT06359106
First seen Jun 26, 2026 · Last updated Jun 27, 2026 · Updated 1 time
Summary
This study compares giving 40% versus 80% oxygen during laparoscopic gastrointestinal surgery in patients aged 65 and older. The goal is to see which oxygen level leads to better lung function after surgery. Over 1,100 participants will be randomly assigned to one of the two oxygen levels, and their oxygen levels and lung complications will be tracked for 7 days.
What this could mean
Our plain-language read of the trial. This is informational only — not medical advice or a prediction.
Active substance
inhaled oxygen (40% or 80% concentration)
What this could lead to
If it works, this could show that using less oxygen during surgery is safer for older patients' lungs, leading to better recovery guidelines.
What could go wrong
This is a phase 4 trial comparing two standard oxygen levels, so it's not testing a new treatment. The results may only apply to older patients having specific laparoscopic surgery, and the difference between groups might be small.
Disclaimer
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Summaries may miss details or leave out important information. Before applying or accepting participation, make sure you have read and understood the full study. Curemydisease.com takes no responsibility whatsoever for anything missed, misunderstood, or acted upon as a result of our summary — we know it does not capture everything.
This is a summary of the original study . Summaries may miss details or leave out important information. Before applying or accepting participation, make sure you have read and understood the full study. Curemydisease.com takes no responsibility whatsoever for anything missed, misunderstood, or acted upon as a result of our summary — we know it does not capture everything.
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Contacts and locations
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Study contacts
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Contact
Phone: •••-•••-•••• Email: •••••@•••••
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Contact
Phone: •••-•••-•••• Email: •••••@•••••
Locations
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Affiliated Hospital of Qingdao University
RECRUITINGQingdao, China
Contact
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Beijing Friendship Hospital, Capital Medical University
RECRUITINGBeijing, China
Contact
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Chifeng Municipal Hospital
RECRUITINGChifeng, China
Contact
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Dalian Third People's Hospital
RECRUITINGDalian, China
Contact
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First Affiliated Hospital of Harbin Medical University
RECRUITINGHarbin, China
Contact
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First Affiliated Hospital of Kunming Medical University
RECRUITINGKunming, China
Contact
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First Affiliated Hospital, Dalian Medical University
RECRUITINGDalian, China
Contact
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First Hospital of Hebei Medical University
RECRUITINGShijia Zhuang, China
Contact
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First Medical University and Shandong Provincial Qianfoshan Hospital
RECRUITINGJinan, China
Contact
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Harbin Medical University Cancer Hospital
RECRUITINGHarbin, China
Contact
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Liaoning Cancer Hospital and Institute
RECRUITINGShenyang, China
Contact
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Second Hospital of Hebei Medical University
RECRUITINGShijia Zhuang, China
Contact
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Shenzhen People's Hospita
RECRUITINGShenzhen, China
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Sichuan Provincial People's Hospital
RECRUITINGChendu, China
Contact
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YANBIAN University Hospital（Yanbian Hospital）
RECRUITINGYanbian, China
Contact
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the First Hospital of China Medical University
RECRUITINGShenyang, Liaoning, 110001, China
Contact Phone: •••-•••-•••• Email: •••••@•••••