Effect of BiPAP ventilator and high-flow nasal cannula on painless colonoscopic respiratory support for obese patients: a prospective randomized controlled study

Status

Active, not recruiting

Phases

Early Phase 1

Study type

Interventional

Source

ChiCTR

Registry ID

ChiCTR2200062609

Enrollment

Unknown

Registered

2022-08-14

Start date

2022-08-10

Completion date

Unknown

Last updated

2023-04-12

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

Conditions

hypoxemia

Interventions

BiPAP group:BiPAP ventilation

HFNC group:HFNC ventilation

Control group:nasal cannula ventilation

Eligibility

Sex/Gender

All

Age

18 Years to 60 Years

Inclusion criteria

Inclusion criteria: 1. Patients undergoing elective colonoscopy; 2. BMI > 28 kg/m2; 3. Aged 18-65 years; 4. ASA grade II and III.

Exclusion criteria

Exclusion criteria: 1. Emergency endoscopic surgery; 2. Patients with severe COPD; 3. Patients with hemodynamic instability before surgery; 4. Patients at risk of aspiration; 5. Pregnant women.

Design outcomes

Primary

Measure	Time frame
incidence of SpO2<92% during anesthesia;	—

Secondary

Measure	Time frame
incidence of SpO2 5;Time from anesthesia induction to the apperance of SpO2<92%;Time from anesthesia induction to the apperance of SpO2<90%;Time from anesthesia induction to the apperance of SpO2<85%;operating time;number of operation interruptions;	—

Countries

China

Contacts

Public ContactShen Ning

Department of Anaesthesiology, Third Affiliated Hospital of Sun Yat-sen University

paulshenyh@163.com+86 13922289000

Outcome results

None listed

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