EFAST Flashcards
EFAST should be done with a probe of a frequency
2-5 MHz
Which portion of the heart is closest to the liver in the subxiphoid view?
R atrium and right ventricle
In the parasternal long view, what parts of the heart are visualized?
Left atrium, left ventricle, right outflow tract, mitral valve, aortic valve, aortic outflow tract, descending aorta
In abdominal view, which direction is the probe marker pointed for parasternal long view?
Toward the left hip
In the PSL view, comet tails are caused by…
Air in the lung
A … will not go anterior to the descending aorta and extend toward the AV groove
Pleural effusion
Both lef pleural fluid and pericardial fluid will go … to the left ventricle.
Posterior
Epicardial fat pads will be … on the heart and not extend… to the left ventricle
Anterior and not extend posterior
What is the volume threshold for detection of fluid in the abdomen?
250cc
Two most common sources of hemorrhage in the abdomen?
Spleen and liver
Perisplenic fluid is usually where?
Subphrenic
What are the layers around the liver called?
Glisson’s capsule/Gerota’s fascia
The perihepatic coronal window particularly subphrenic can show hemoperitoneum earlier because
Fluid will collect here prior to pooling in Morrison’s pouch
Obtaining a transverse view of Morrison’s pouch is helpful in detecting…
Small medial collections of fluid
How can hemoretroperitoneum be detected?
See it in the true capsule of the kidney
How will parenchymal injuries to the liver appear?
Hyperechoic
What is the curtain effect?
Air from the costoprhrenic angle blocks view of the spleen with inspiration.
What is the cause of perisplenic false positive on EFAST?
The enlarged left lobe of the liver looks like firee fluid as the lobe extends into view.
Comet tails (ring down) is evidence (for/against) pneumothorax.
Against
What are A-lines?
Reverberations from skin to pleural (supports pneumothorax diagnosis)
What sign is definitive for pneumothorax?
Lung point
What is a lung point?
Portion of non-lung sliding with lung sliding on either side
B-lines are also called
Comet tails or ring down
Lung rockets indicate
Interstitial syndrome. Large number of B-lines in rib spaces
Lung consolidation looks like… on ultrasound.
Spleen or liver but should also have ring down
What are the other causes of absent lung sliding?
look this up!
