Gastric volume after following two different guidelines for starvation prior to general anaesthetic Not Applicable
Conditions
Interventions
Participants are allowed clear fluids but no solid food for the first 4 hours of the study, and for the next 2 hours before the theoretical time of induction of anaesthesia (time zero) they are random
Sponsors
University of Bristol
Eligibility
Sex/Gender
All
Inclusion criteria
Inclusion criteria: 1. Adults aged 18 years or over 2. Able to follow the protocol 3. Able to attend on two separate days
Exclusion criteria
Exclusion criteria: 1. Pregnancy 2. Taking medication that may influence appetite or gastric physiology 3. Any medical condition which alters appetite or gastric physiology, e.g. previous gastro-duodenal surgery 4. Diabetes mellitus 5. Advanced liver or renal disease 6. Recent gastrointestinal infection (within 1 month) 7. Any condition that hinders the acquisition of ultrasound images
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Total gastric volume at time zero. Gastric volume is measured by ultrasound every 30 minutes during the 2-hour study period in which participants were at the study location, with measurements taken both immediately before and after intervention (either consuming water or remaining fasted). A minimum of seven measurements are made. In the event that gastric volume has not returned to baseline volume by the end of each protocol further ultrasound scans are conducted for up to an additional 2 hours. | — |
Secondary
| Measure | Time frame |
|---|---|
| Wellbeing scores: quantitative data on thirst, hunger and anxiety scores collected using a simple numeric interval scale of 1 to 10 developed for this study at t-120, t-60 and t0 | — |
Countries
England, United Kingdom
Contacts
Public ContactAndrew Thompson
Outcome results
None listed