LIMITATIONS of GASTRIC ULTRASOUND

Gastric ultrasound findings may be inaccurate in subjects with abnormal underlying gastric anatomy. For example:

  • previous gastric resection or bypass
  • gastric band in situ
  • previous fundoplication
  • large hiatus hernia

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Interpretation of Findings

  • Defining the type of content (empty, clear fluid or thick fluid/solid) is the first step. An empty stomach s suggestive of low aspiration risk. Solid content is suggestive of a high aspiration risk.
  • Clinical data suggest that a volume of up to 1.5 mL/kg (100 mL for the average adult) is normal in fasted patients.

FlowChart1

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