Diagnostic accuracy of a simple qualitative ultrasound assessment for the diagnosis of empty stomach in the adult: A supplementary analysis of a prospective observer‐blind randomized crossover study
Authors' conclusion
These results suggest that qualitative assessment in the semirecumbent position had high diagnostic accuracy for the diagnosis of fluid volume <0.8 mL.kg-1 ;
Study context
- Population
- Adult fasting volunteers ingesting randomised water volumes (0–200 mL); empty stomach defined as fluid volume <0.8 mL.kg-1120 measurements analysed
- Participants
- 20 participants
- Comparison
- Qualitative US assessment with vs without head-of-bed elevation to 45°; composite US scale and clinical algorithm
- Outcome
- Diagnostic accuracy for empty stomach (fluid volume <0.8 mL.kg-1)
- Follow-up
- 3 min after water ingestion
Methodological detailssupplementary analysis of a prospective randomised crossover trial, observer-blind
- Supplementary analysis of a prospective randomised crossover trial
- Observer-blind
Performance
As reported in the abstract
Diagnosis of empty stomach (fluid volume <0.8 mL.kg-1)
| Test or model | Sensitivity | Specificity |
|---|---|---|
| Qualitative assessment in the semirecumbent position | 93% (95% CI: 68-100) | 89% (95% CI: 76-96) |
Qualitative assessment in the semirecumbent position
Sensitivity93% (95% CI: 68-100)
Specificity89% (95% CI: 76-96)
Further findings
| Outcome | Qualitative assessment, 0° | Clinical algorithm | P value |
|---|---|---|---|
| Specificity without head-of-bed elevationClinical algorithm vs Qualitative assessment, 0° · significantly higher with clinical algorithm | P < 0.05 | ||
| Specificity | 67% [95% CI: 51-80] | 98% [95% CI: 88-100] |
Original publication
Diagnostic accuracy of a simple qualitative ultrasound assessment for the diagnosis of empty stomach in the adult: A supplementary analysis of a prospective observer‐blind randomized crossover study. Acta Anaesthesiol Scand. Published 16 June 2023. doi:10.
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