Focused assessment with sonography for trauma (FAST) is an ultrasound examination used to screen for fluid in trauma patients. It can detect pathologic pericardial or intraperitoneal free fluid which appears dark gray or black. The FAST exam uses four viewing positions to examine the pericardium, Morison's pouch, splenorenal interface, and bladder/retrovesical structures to identify fluid.

1. Pierce Hibma
BMS 451
Gross Anatomy M4 Project

2.  FOCUSED ASSESSMENT WITH
SONOGRAPHY FOR TRAUMA
 Provides an important initial screening
examination in the trauma patient
 Determines the presence of pathologic
pericardial or intraperitoneal free fluid, which
appears as a hypoechoic or anechoic
(ie, dark grey or black) collection.
 Utilizes four viewing positions

3.  Used to view the pericardium

13. Used to view Morison’s pouch (hepatorenal
interface).

22.  Used to view splenorenal interface.

31.  Used to obtain a view of the bladder and
retrovesical structures.

38.  http://www.hqmeded.com/node/16

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 Pariyadath, Manoj. “Emergency ultrasound in adults with abdominal and thoracic
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 Sauerland, Eberbardt. Grant’s Dissector.