ICU sedation, delirium & recovery
Ultrasound assessment of gastric residual volume in patients over 60 years of age undergoing gastroscopy under sedation: a prospective cohort study
Main finding · Incidence of full stomach (gastric volume > 1.5 mL·kg-1 and/or solid particles)Result — go to the resultRisk difference 8.6% 95% CI 1.3–15.8Authors' conclusion
Patients > 60 yr of age scheduled for gastroscopy under sedation had a higher incidence of a full stomach detected with ultrasound compared with a younger cohort, which is potentially associated with a higher aspiration risk. We calculated a cut-off value of RLD CSA for detecting gastric volume in patients > 60 yr of age of approximately 10 cm2, which may help to quickly assess patients at risk of aspiration.
Study context
- Population
- Fasted patients scheduled for elective gastroscopy under sedation
- Participants
- 81 vs 79
- Exposure
- Patients >60 yr vs younger controls
- > 60 yrn = 81
- Youngn = 79reference
- Outcome
- Accuracy of ultrasonographic antral cross-sectional area (CSA) in right lateral decubitus (RLD) position to detect gastric volume > 1.5 mL·kg-1 (vs endoscopically suctioned volume)
Methodological detailsdiagnostic accuracy (ROC analysis)
- Diagnostic accuracy (ROC analysis)
Main finding
As reported in the abstract
Incidence of full stomach (gastric volume > 1.5 mL·kg-1 and/or solid particles)
Risk difference
8.6%
95% CI 1.3–15.8
P = 0.03
Events by group
> 60 yr vs Young
risk difference 8.6% (95% CI 1.3–15.8); P = 0.03
Observational data: associations, not effects.
Further findings
- Right lateral decubitus (RLD) cross-sectional area (CSA) cut-off for gastric volume > 1.5 mL·kg-1 in patients > 60 yr
- 10.4 · cut-off · cm²
Original publication
Ultrasound assessment of gastric residual volume in patients over 60 years of age undergoing gastroscopy under sedation: a prospective cohort study. Can J Anaesth. Published 21 July 2023. doi:10.
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