The “gastric fluid” sign: an unrecognized false-positive finding during focused assessment for trauma examinations

Nagdev, Arun; Racht, Justin

doi:10.1016/j.ajem.2007.09.013

Cited by 7 publications

(3 citation statements)

References 3 publications

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“…There have been an increasing number of physicians incorporating the FAST examination into clinical practice, therefore delineation of this and other falsepositive findings is necessary [4]. Our study indicates that this false-positive is prevalent when performing the FAST examination, and perhaps further validates the need to train clinicians not only on technique and image acquisition, but also in diagnosis and interpretation.…”

Section: Discussionsupporting

confidence: 45%

Prevalence of the “double-line” sign when performing focused assessment with sonography in trauma (FAST) examinations

et al. 2015

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The double-line sign (DLS) is a wedge-shaped hypoechoic area in Morison's pouch bounded on both sides by echogenic lines. It represents a false-positive finding for free intraperitoneal fluid when performing focused assessment with sonography in trauma examinations. The purpose of this study was to determine the prevalence of DLS. Secondarily, the study will further investigate the relationship between the presence of a DLS and body mass index (BMI). This was a prospective study that enrolled patients over a 7-month period. Inclusion criteria were patients ≥ 18 years of age presenting to the Emergency Department (ED) requiring a FAST examination as part of the patient's standard medical care. Each examination was performed by one of six experienced ultrasonographers. Presence or absence of the DLS was established in real time and gender, height, weight, and BMI were recorded for each patient. The overall prevalence rate of DLS and the corresponding 95 % confidence interval were calculated, as well as the prevalence rates broken down by BMI characterized as underweight, normal weight, overweight, and obese; and age category (18-29, 30-64, and 65+). The Chi-square test and a Fisher's exact test for BMI category were used to compare the prevalence rates of positive DLS among the different demographic groups. 100 patients were enrolled in the study; the overall prevalence was 27 %. There was no statistical significance among the different demographic groups or BMI. The DLS is a prevalent finding. We believe this sign has become more apparent due to improved imaging technology and resolution.

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Section: Discussionsupporting

confidence: 45%

Prevalence of the “double-line” sign when performing focused assessment with sonography in trauma (FAST) examinations

et al. 2015

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“…In this case, a perinephric fat pad was mistaken for free fluid. Other false positives include a portion of the small intestine, hepatic flexure of the colon, gallbladder, or a renal cyst (1)(2)(3)(4).…”

Section: A Perinephric Fat Pad and "Fast Double-line Sign" Representimentioning

confidence: 99%

“…Many ultrasound findings have been described that mimic free intraperitoneal fluid and can be misinterpreted, resulting in a false-positive FAST examination (1)(2)(3)(4). A false-positive FAST examination may lead to unnecessary additional radiologic interventions or procedures, including computed tomography, diagnostic peritoneal lavage, or laparotomy.…”

Section: Introductionmentioning

confidence: 98%

The Double-Line Sign: A False Positive Finding on the Focused Assessment with Sonography for Trauma (FAST) Examination

Sierzenski

Schofer

Bauman

et al. 2011

The Journal of Emergency Medicine

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Elongated left lobe of the liver mimicking a subcapsular hematoma of the spleen on the focused assessment with sonography for trauma exam

Jones

Tabbut

Gramer

2014

The American Journal of Emergency Medicine

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The “gastric fluid” sign: an unrecognized false-positive finding during focused assessment for trauma examinations

Cited by 7 publications

References 3 publications

Prevalence of the “double-line” sign when performing focused assessment with sonography in trauma (FAST) examinations

Prevalence of the “double-line” sign when performing focused assessment with sonography in trauma (FAST) examinations

The Double-Line Sign: A False Positive Finding on the Focused Assessment with Sonography for Trauma (FAST) Examination

Elongated left lobe of the liver mimicking a subcapsular hematoma of the spleen on the focused assessment with sonography for trauma exam

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