Normal findings
- • No free fluid in 4 views
Common abnormal findings
Free fluid
- • Hypoechoic stripe in Morison's pouch
- • Splenorenal recess
- • Pouch of Douglas
- • Pericardial effusion
Pneumothorax (eFAST)
- • Absence of pleural sliding
- • Lung point sign
Interpretation tips
- • Operator dependent — repeat if clinical concern persists
- • Sensitivity ~60-80% in blunt trauma
Clinical correlation
- • Unstable + positive FAST → laparotomy
- • Stable + positive FAST → CT for grading
Common mistakes
- • Missing isolated retroperitoneal injury
- • False positive from ascites
Educational support only — not a substitute for clinical judgment.
