• Gastric PoCUS research that specifically focuses on critically ill and emergency patients is still limited.
  • In these patients, gastric PoCUS:
    • is able to diagnose the “at risk” stomach and antral CSA correlates well with aspirated gastric residual volume.
    • may inform risk-benefit considerations when planning timing and medication choice for procedural sedation or induction.
    • is being researched as a tool to guide enteral nutrition in the ICU instead of aspiration of residual volumes.
    • can be used to detect foreign metal objects in the stomach (e.g. batteries).
    • provides confirmation of accurate nasogastric tube placement in the stomach or duodenum by direct imaging of the tip or indirect confirmation through air instillation (air fogging).
  • Emergency physicians with experience in point-of-care ultrasound can accurately identify an “empty” stomach with excellent test performance.
  • Limitation: the right lateral decubitus position is not always feasible in critically ill patients.



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