• D Dammers, M El Moumni, I I Hoogland, N Veeger, and E Ter Avest.
• Department of Emergency Medicine, Medical Center Leeuwarden, Henry Dunantweg 2, 8934 AD, Leeuwarden, The Netherlands.
• Scand J Trauma Resus. 2017 Jan 3; 25 (1): 1.

BackgroundFocussed Assessment with Sonography for Trauma (FAST) is a bedside ultrasonography technique used to detect free intraperitoneal fluid in patients presenting with blunt abdominal trauma (BAT) in the emergency department.MethodsIn this retrospective cohort study we investigated the potential of FAST as a risk stratification instrument in haemodynamically (HD) stable patients presenting after BAT by establishing the association between the FAST exam result and final outcome. An adverse outcome was defined in this context as the need for either a laparoscopy/laparotomy or an angiographic embolization or death due to abdominal injuries).ResultsA total of 421 patients with BAT were included, of which nine had an adverse outcome (2%). FAST was negative in 407 patients. Six of them turned out to have free intraperitoneal fluid (sensitivity 67 [41-86]%). FAST was positive in 14 patients, 12 of whom had free intraperitoneal fluid (specificity 99 [98-100]%). A positive FAST (positive likelihood ratio 34.3 [15.1-78.5]) was stronger associated with an adverse outcome than Injury Severity Score (ISS) or any individual clinical- or biochemical variables measured at presentation in the ED.DiscussionThe FAST exam can provide valuable prognostic information at minimal expenses during the early stages of resuscitation in haemodynamically stable patients presenting with BAT.ConclusionsFAST exam should not be omitted in patients with BAT.

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