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The effect of the oropharyngeal airway on gastric insufflflation

The effect of the oropharyngeal airway on gastric insufflflation after mask ventilation following the induction of anaesthesia

Status
Active, not recruiting
Phases
Unknown
Study type
Interventional
Source
ChiCTR
Registry ID
ChiCTR2600119770
Enrollment
Unknown
Registered
2026-03-03
Start date
2026-04-01
Completion date
Unknown
Last updated
2026-03-09

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

Conditions

bloated stomach

Interventions

Oral pharyngeal airway group:ropharyngeal airway
Control group:no ropharyngeal airway

Sponsors

Zhejiang Cancer Hospital
Lead Sponsor

Eligibility

Sex/Gender
All
Age
18 Years to 80 Years

Inclusion criteria

Inclusion criteria: 1. Age >= 18 years; 2. ASA class I-III; 3. General anesthesia intubated patients; 4. Signed informed consent form.

Exclusion criteria

Exclusion criteria: 1. BMI >30 kg/m^2; 2. Pathologic changes in the oropharynx or face; 3. Risk of regurgitant aspiration (full stomach or obstruction); 4. Mallampati score >=3 or nail-chin distance 55 years, BMI >26 kg/m^2, edentulousness, bushy mustache, and history of snoring). Refusal to participate in the study; 7. Patients with gastric or gastrointestinal decompression tubes in place.

Design outcomes

Primary

MeasureTime frame
Antrum area;—

Secondary

MeasureTime frame
comet tail artifact;Partial pressure of arterial oxygen;cross-sectional area of gastric antrum;Partial pressure of carbon dioxide;—

Countries

China

Contacts

Public ContactXu Pingbo

Zhejiang Cancer Hospital

xupingboshanghai@163.com+86 18017312996

Outcome results

None listed

Source: ChiCTR (via WHO ICTRP) · Data processed: Mar 14, 2026