Gastric insufflation
Conditions
Interventions
Positive pressure group:Positive airway pressure assisted ventilation with mask
Non-positive pressure group:Fasten the mask without positive airway pressure assisted ventilation
Sponsors
Nanfang Hospital of Southern Medical University
Eligibility
Sex/Gender
All
Age
18 Years to 65 Years
Inclusion criteria
Inclusion criteria: 1. Voluntarily signed informed consent; 2. ASA I-II; 3. Aged 18-65 years (inclusive 18 years old); 4. Mallampati grades I-III; 5. Two or less independent risk factors for mask dyspnea (aged > 55 years, BMI > 26 kg/m^2, history of snoring, beard, and no teeth); 6. BMI = 8 h, no drinking time >= 2 h; 8. No drugs affecting gastrointestinal motility were taken 1 day before surgery.
Exclusion criteria
Exclusion criteria: 1. Allergic to the drugs involved in the study protocol; 2. Difficult airway, risk of upper airway obstruction; 3. Cardiopulmonary dysfunction, cerebrovascular disease; 4. Gastroesophageal reflux disease, intestinal obstruction, esophageal or gastrointestinal trauma or surgical history; 5. Diabetes mellitus; 6. Pregnancy.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Change of the cross-sectional area (CSA) of gastric antrum; | — |
Secondary
| Measure | Time frame |
|---|---|
| Arterial partial pressure of oxygen;Arterial partial pressure of carbon dioxide;pH;Bicarbonate;Heart rate;Mean arterial pressure;Saturation of pulse oxygen;Incidence of reflux of gastric contents; | — |
Countries
China
Contacts
Public ContactQin Zaisheng
Nanfang Hospital of Southern Medical University
Outcome results
None listed