pulmonary aspiration
Conditions
Interventions
The 2-hour group :Fasting time from 2 hours to 2 hours 25 minutes
The 2.5-hour group:Fasting time from 2 hours to 2 hours 55 minutes
The 3-hour group:Fasting time from 3 hours to 3 hours 25 minutes
The 3.5-hour group:Fasting time from 3 hours to 3 hours 55 minutes
The 4-hour group:Fasting time >=4 hours
Sponsors
The Second Affiliated Hospital of Shantou University Medical College
Eligibility
Sex/Gender
All
Age
18 Years to 85 Years
Inclusion criteria
Inclusion criteria: American Society of Anesthesiologists (ASA) physical status ?-?, aged 18-85 years, weighing 45-110 kg, height over 145 cm,ability to understand the study procedures and provide informed consent.
Exclusion criteria
Exclusion criteria: recent upper gastrointestinal bleeding (within 1 month); Previous gastric or esophageal surgery; Known upper gastrointestinal anatomical abnormalities such as gastric tumors; Hypersensitivity to couplers.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Cross-sectional area of the antrum;Calculated gastric volume;Actual gastric volume; | — |
Secondary
| Measure | Time frame |
|---|---|
| Semi-Quantitative Grade; | — |
Countries
China
Contacts
Public ContactRuiming D
The Second Affiliated Hospital of Shantou University Medical College
Outcome results
None listed