Focused Assessment with
Sonography in Trauma
by Dr Robel
What is the FAST?
Limited ultrasound examination for
detection of free fluid in the torso in
trauma patients
*Is there free fluid? where is it?
4 Views:
 Subxiphoid (liver)
 RUQ (liver)
 LUQ (spleen)
 Pelvic (bladder)
 *Acoustic windows
◦ Dense (water > air)
◦ Flexible (liver > bone)
What is the FAST?
Limited ultrasound examination for
detection of free fluid in the torso in
trauma patients
The FAST exam is used to answer two simple
questions:
• Is fluid present in the pericardial sac?
• AND: Is free fluid present in the peritoneal cavity?
The extended FAST, or EFAST is used to answer two
additional questions:
• Is fluid present in the pleural cavity?
• AND: Is air present in the pleural cavity?
There are 4 standard views or windows that are obtained as
part of the FAST. These are
• the subxiphoid view for evaluation of a pericardial effusion.
• The RUQ view, for assessment of free fluid in Morrison’s
pouch which is a potential space between the liver and the
right kidney.
• The LUQ view, examining for free fluid around the spleen.
• The final view is a pelvic window assessing for free fluid
cephalad to the bladder.
Echogenicity
Hyper-echoic
Iso-echoic
Hypo-echoic
An-echoic
subxiphiod
Subxiphoid
Pericardial fluid
RUQ
RUQ FLUID
MORRISON POUCH FLUID
LUQ
LUQ FLUID
PELVIS
PELVIC COLLECTION
Heamothrax
Ultrasound & Pneumothorax
 Chest x-ray traditional imaging study for
pneumothorax
 Ultrasound higher sensitivity than supine chest
x-ray
 Simple, rapid technique
Land mark
Seashore Sign: No Pneumothorax
Barcode Sign: Pneumothorax
Barcode Sign: Pneumothorax

Emergency focused abdominal ultrasound.pptx