Gastric Insufflation During Positive Pressure Ventilation
Not Applicable
- Conditions
- Gastric Insufflation
- Registration Number
- NCT04964882
- Lead Sponsor
- SMG-SNU Boramae Medical Center
- Brief Summary
Effect of peak inspiratory pressure on the gastric insufflation is evaluated using ultrasonography during face mask ventilation in obese adults. Effect of facial mask holding techniques on the gastric insufflation is also evaluated.
- Detailed Description
Not available
Recruitment & Eligibility
- Status
- UNKNOWN
- Sex
- All
- Target Recruitment
- 78
Inclusion Criteria
- Patients with body mass index ≥ 30 kg/m2 who are scheduled for general anesthesia
Exclusion Criteria
- Risk of delayed gastric emptying or gastroesophageal reflux (gastroesophageal reflux disease, achalasia, history of stomach surgery, gastrointestinal obstruction, uncontrolled DM)
- Pregnancy
- Known or predicted difficult airway
Study & Design
- Study Type
- INTERVENTIONAL
- Study Design
- SEQUENTIAL
- Primary Outcome Measures
Name Time Method Presence of gastric insufflation in the epigastric region During anesthesia induction Under ultrasound, air signal is assessed in the epigastric region
- Secondary Outcome Measures
Name Time Method Expiratory tidal volume During anesthesia induction Expiratory tidal volumes displayed on the monitor of the anesthesia machine are recorded.
Cross-sectional area of the antral cross-sectional area During anesthesia induction During ultrasound examination, anterior-posterior diameter and cranio-caudal diameter of the antrum are measured. Cross-sectional area of the gastric antrum is calculated as follows; (AP × CC × π)/4 (AP=antero-posterior diameter and CC=cranio-caudal diameter).
Presence of gastric insufflation in the upper esophageal region During anesthesia induction Under ultrasound, air signal is assessed in the upper esophageal region.