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Effect of different pressure on cricoid cartilage on gastric gas volume during mask positive pressure ventilation: a randomized controlled trial

Effect of different pressure on cricoid cartilage on gastric gas volume during mask positive pressure ventilation: a randomized controlled trial

Status
Active, not recruiting
Phases
Unknown
Study type
Interventional
Source
ChiCTR
Registry ID
ChiCTR2500098952
Enrollment
Unknown
Registered
2025-03-17
Start date
2025-03-21
Completion date
Unknown
Last updated
2025-03-24

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

Conditions

Gastric insufflation

Interventions

10N pressure group:A pressure dynamometer is used to apply 10N pressure to the cricoid cartilage
20N pressure group:A pressure dynamometer is used to apply 20N pressure to the cricoid cartilage
30N pressure group:A pressure dynamometer is used to apply 30N pressure to the cricoid cartilage
Control group:Place the manometer lightly on the cricoid cartilage without applying pressure

Sponsors

Guangxi Medical University Affiliated Tumor Hospital
Lead Sponsor

Eligibility

Sex/Gender
All
Age
18 Years to No maximum

Inclusion criteria

Inclusion criteria: 1. Age 18 years or older; 2. General anesthesia after tracheal intubation after mask positive pressure ventilation; 3. ASA grade II to III

Exclusion criteria

Exclusion criteria: 1. Difficult airways were predicted, such as anatomical abnormalities, history of neck or esophageal surgery, limited neck mobility, and mandibular retrusion; 2. Patients with gastric tube indwelling before surgery and diagnosed gastroesophageal reflux disease; 3. Increased abdominal pressure due to intestinal obstruction or pregnancy; 4. Contraindications with cricoid compression are present

Design outcomes

Primary

MeasureTime frame
Change of the cross-sectional area (CSA) of gastric antrum;

Secondary

MeasureTime frame
Explore moderate pressure on cricoid cartilage;Ventilator parameters during anesthesia induction;The pH of the throat after removal of the tracheal tube;The patient had postoperative throat discomfort;Vital signs during induction of general anesthesia;Postoperative complication;

Countries

China

Contacts

Public ContactShenglin Pei

Guangxi Medical University Affiliated Tumor Hospital

peishenglin@gxmu.edu.cn+86 152 7801 7977

Outcome results

None listed

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