Can a nasal oxygen device prevent low oxygen during endoscopy in sleep apnea patients?

NCT ID NCT07155330

Completed Symptom relief Sponsor: Zhejiang University Source: ClinicalTrials.gov ↗

First seen Jun 24, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This study tested whether a high-flow nasal cannula (HFNC) can reduce the risk of low oxygen levels during sedated gastrointestinal endoscopy in 80 adults with high-risk obstructive sleep apnea. Participants had a STOP-Bang score of 5 or higher and were undergoing gastroscopy, colonoscopy, or both. The goal was to see if HFNC prevents hypoxia, a common complication during sedation.

What this could mean

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

Active substance: high-flow nasal cannula (device)
What this could lead to: If it works, this could provide a simple way to prevent dangerous drops in oxygen during routine endoscopy for people with severe sleep apnea.
What could go wrong: This is a small, completed study with only 80 participants, so results may not apply to everyone. The device may not reduce hypoxia risk as hoped.

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Conditions

The condition(s) this trial relates to.

colon carcinoma colonic neoplasm disease esophageal cancer Esophageal Neoplasms gastric cancer gastric neoplasm Hypoxia obstructive sleep apnea syndrome

As listed by the trial registrant

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

COLON CANCER ESOPHAGEAL CANCER GASTRIC CANCER (DIAGNOSIS) HYPOXEMIA

Contacts and locations

Locations

The First Affiliated Hospital, Zhejiang University School of Medicine

Hangzhou, Zhejiang, 310000, China

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