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Effect of variable-diameter oxygen mask on prevention and improvement of hypoxemia in obese patients undergoing painless gastroscopy: A randomized controlled study

Effect of variable-diameter oxygen mask on prevention and improvement of hypoxemia in obese patients undergoing painless gastroscopy: A randomized controlled study

Status
Active, not recruiting
Phases
Unknown
Study type
Interventional
Source
ChiCTR
Registry ID
ChiCTR2500107784
Enrollment
Unknown
Registered
2025-08-18
Start date
2025-10-10
Completion date
Unknown
Last updated
2025-08-25

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Hypoxemia

Interventions

Variable-diameter oxygen mask group(V group):During painless gastroscopy, oxygen is administered using a variable-diameter oxygen mask
nasal cannula oxygen therapy group(N group):During painless gastroscopy, conventional nasal cannula is used for oxygen inhalation

Sponsors

People's Hospital of Jianyang City
Lead Sponsor

Eligibility

Sex/Gender
All

Inclusion criteria

Inclusion criteria: 1.Planned to undergo painless gastroscopy; 2.Aged 18–65 years; 3.American Society of Anaesthesiologists (ASA) grade I–II; 4.Body mass index (BMI) between 28–39.9 kg/m^2; 5.Provided signed informed consent.

Exclusion criteria

Exclusion criteria: 1.Severe cardiopulmonary insufficiency (e.g., heart failure, chronic obstructive pulmonary disease); 2.Allergies to anesthetics such as ciprofol or opioids; 3.Pregnancy or lactation; 4.Severe mental illness or inability to cooperate with researchers; 5.History of substance addiction or drug abuse.

Design outcomes

Primary

MeasureTime frame
Incidence of hypoxemia during the examination;

Secondary

MeasureTime frame
Duration of the completed examination;Proportion of examinations paused due to hypoxemia;Proportion of patients required intubation;Proportion of patients requiring manual assisted ventilation;Minimum SpO2 during the examination;Proportion of gastroscopes withdrawn due to hypoxemia.;Endoscopist satisfaction score;Adverse events related to the variable-diameter oxygen mask;Duration of hypoxemia;

Countries

China

Contacts

Public ContactWenjie Mao

People's Hospital of Jianyang City

35917029@qq.com+86 15282219022

Outcome results

None listed

Source: ChiCTR (via WHO ICTRP) · Data processed: Feb 4, 2026