title: False-positive focused abdominal sonography in trauma in a hypotensive child: case report.
abstract: We report a case of a false-positive focused abdominal sonography in trauma (FAST) examination in a persistently hypotensive pediatric trauma patient, performed 12 hours after the trauma, suspected to be caused by massive fluid resuscitation leading to ascites. While a positive FAST in a hypotensive trauma patient usually indicates hemoperitoneum, this case illustrates that the timing of the FAST examination relative to the injury, as well as clinical evolution including the volume of fluid resuscitation, need to be considered when interpreting the results of serial and/or late FAST examinations.
authors.affiliation: From the *Faculty of Medicine, McGill University; and †Departments of Pediatric Surgery and ‡Pediatric Emergency Medicine, Montreal Children's Hospital-McGill University Health Center, Montreal, Quebec, Canada.
authors.forename: Isabelle
authors.initials: I
authors.lastname: Imamedjian
authors.forename: Robert
authors.initials: R
authors.lastname: Baird
authors.forename: Alexander Sasha
authors.initials: AS
authors.lastname: Dubrovsky
mesh_terms: D000007:Abdominal Injuries / Q000000981:diagnostic imaging*; D000818:Animals; D001201:Ascites / Q000000981:diagnostic imaging* / Q000209:etiology; D001733:Bites and Stings / Q000628:therapy; D002648:Child; D003937:Diagnosis, Differential; D004285:Dogs; D017707:Erythrocyte Transfusion; D005189:False Positive Reactions; D005260:Female; D005440:Fluid Therapy / Q000009:adverse effects*; D006323:Heart Arrest / Q000209:etiology; D006801:Humans; D007022:Hypotension / Q000188:drug therapy / Q000209:etiology*; D009104:Multiple Trauma / Q000209:etiology / Q000628:therapy; D010949:Plasma; D011030:Pneumothorax / Q000209:etiology; D012151:Resuscitation / Q000009:adverse effects; D012771:Shock, Hemorrhagic / Q000175:diagnosis; D014057:Tomography, X-Ray Computed; D014463:Ultrasonography; D014662:Vasoconstrictor Agents / Q000627:therapeutic use
chemical_list: D014662:Vasoconstrictor Agents