Introduction:
- Full form: Focused assessment with sonography in trauma
- It is the first investigation to be done in blunt trauma abdomen.
Probe placement:
| Serial | Site | To Exclude |
| 1 | Epigastric/ Subcostal | Pericardial tamponade |
| 2 | Right flank | Blood in Morrison pouch |
| 3 | Left flank | Splenic injury |
| 4 | Pelvis | Hemoperitoneum |
Extended FAST (eFAST):
- eFAST allows for the examination of both lungs by adding bilateral anterior thoracic sonography to the FAST exam. This allows early detection of a pneumothorax.
- Normal lung movement: ‘Seashore‘ sign
- Pneumothorax: ‘Barcode/ Stratosphere‘ sign
- Cause of Barcode: Pneumothorax prevents detection of motion.
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