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Serial gastric content measurements in a procedural sedation (PSA) patient. Serial ultrasound (US) examinations were performed on a healthy 7-year-old male awaiting PSA to reduce a forearm fracture. US demonstrated solid/thick liquid content with heavy air artifact at (A) 4.25 and (B) 6.25 hours fasting, and at (C) 8.5 hours, when he underwent PSA, demonstrated clearing of air artifact but persistent solid/thick liquid content. G = Gastric antrum; L = Liver; Ao = Aorta.
