An interventional study of High-flow nasal cannula in Hypoxemia, Gastric Cancer (Diagnosis) and Chronic Obstructive Pulmonary Disease (COPD), sponsored by Zhejiang University. Not yet recruiting at 1 site in China. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2026-08-28.
Sponsored by Zhejiang University · Not applicable, Interventional, and Prevention
Hypoxemia is the most common adverse event during propofol sedation for gastrointestinal endoscopy in patients with chronic obstructive pulmonary disease (COPD) due to diminished pulmonary reserve. Although high-flow nasal cannula (HFNC) oxygenation has been shown to effectively reduce hypoxemia during sedated endoscopy in obese patients, its application in COPD patients remains an evidence gap, largely owing to the traditional concern that high-concentration oxygen may suppress respiratory drive and exacerbate CO₂ retention. This study aims to investigate whether HFNC can reduce the incidence of hypoxemia during sedated gastrointestinal endoscopy in patients with COPD.
1,076 studies on the registry are indexed under Hypoxia; 213 are open to participants now.
This study's planned enrollment of 90 is above the median of 45 across 769 interventional studies indexed under Hypoxia.
Browse Hypoxia studies →Zhejiang University is the lead sponsor of 356 studies on the registry; 166 are open to participants now.
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Exclusion Criteria:
Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Chronic obstructive pulmonary disease: long-term lung disease that makes it hard to breathe out, including emphysema and chronic bronchitis.
Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.
You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.
A reason a treatment, test or procedure should not be given to a particular person, such as an allergy, another illness or a medicine they take.
The anaesthetists’ scale of health before surgery: I is healthy, II has a mild illness that is under control, III a severe one, IV a severe illness that is a constant threat to life. V and VI are used for the critically ill and for organ donors.
COPD
Chronic obstructive pulmonary disease: long-term lung disease that makes it hard to breathe out, including emphysema and chronic bronchitis.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Informed consent
Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.
You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Contraindication
A reason a treatment, test or procedure should not be given to a particular person, such as an allergy, another illness or a medicine they take.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
ASA physical status
The anaesthetists’ scale of health before surgery: I is healthy, II has a mild illness that is under control, III a severe one, IV a severe illness that is a constant threat to life. V and VI are used for the critically ill and for organ donors.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Using high-flow nasal cannula oxygenation
Device: High-flow nasal cannula
Using high-flow nasal cannula oxygenation
The incidence of hypoxemia
75% ≤ SpO2 \< 90% for \<60 s
Time frame: Patients will be followed for the duration of hospital stay, an expected average about 2 hours
The incidence of sub-clinical respiratory depression
90% ≤ SpO2 \< 95%
Time frame: Patients will be followed for the duration of hospital stay, an expected average about 2 hours
The incidence of severe hypoxemia
SpO2 \< 75% or 75% ≤ SpO2 \< 90% for ≥60 s
Time frame: Patients will be followed for the duration of hospital stay, an expected average about 2 hours
The incidence of other adverse events
Other adverse events recorded by tools proposed by the World Society of Intravenous Anesthesia International Sedation Task Force
Time frame: Patients will be followed for the duration of hospital stay, an expected average about 2 hours
QoR-PACU₂-15 score at PACU discharge
QoR-PACU₂-15 assessed at PACU discharge to evaluate early recovery quality (15 items, each scored 0-5; total score 0-75, higher scores indicate better recovery).
Time frame: Patients will be followed for the duration of hospital stay, an expected average about 2 hours
Plan to share: No
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This study is not yet recruiting, as verified in Aug 2026. You cannot join it, but the record below documents what was studied.
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