"Focused Assessment with Sonography for Trauma (FAST) scan is a point-of-care ultrasound (POCUS) examination performed at the time of presentation of a trauma patient."
"Many papers have been published detailing the pros and cons of this investigation 1,2. FAST scanning has a reported sensitivity of ~90% (range 75-100%) and a specificity of ~95% (range 88-100%) for detecting intraperitoneal free fluid 4. Sensitivity for detecting solid organ injuries is much lower."
"An extended FAST or "eFAST" scan is now standard of care, and is performed by incorporating two views assessing the anterior thorax 7:"
Expected headings
"Causes of false negatives"
"Causes of false positives"
"The chief aim of the study, in a trauma patient, is to identify intraperitoneal free fluid (assumed to be haemoperitoneum in the context of trauma), allowing for an immediate transfer to the operating theatre, CT or other. Solid organ injury is seldom identified, and when present, may warrant further investigation."
"if anatomical factors preclude epigastric probe placement, parasternal or apical four-chamber views may be used"