FAST Scan
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What does FAST stand for
focused assessment with sonography for trauma
Advantages of FAST scans
quick non-invasive no radiation exposure
Disadvantages of FAST scans
User dependant No additional information as you'd get with a CT Can have false +ve and -ve Doesn't evaluate solid viscera injuries artefact from free bowel gas and bones can't exclude retroperitoneal bleed
What can cause a false +ve FAST scan result
heart failure ascites pregnancy seminal vesicles (especially in younger men)
What can cause a false -ve FAST scan result
obesity full bladder subcutaneous emphysema
What additional view is seen with an eFAST scan and what is the purpose
anterior pleura Can see lung sliding indicating a traumatic pneumothorax
What are some uses of USS
assessing for reversible causes of CA Inserting lines and drains early recognition of ROSC PEA vs pseudo PEA
What are the 4 views seen on a FAST scan
pericardial perisplenic suprapubic perihepatic
What is seen/assessed on a pericardial FAST scan view
pericardial effusions
What is seen/assessed on a perisplenic FAST scan view
splenorenal space perisplenic space left subphrenic space left paracolic gutter
What is seen/assessed on a suprapubic FAST scan view
pouch of douglas
What is seen/assessed on a perihepatic FAST scan view
Morrisons pouch (hepatorenal space) right subphrenic space right paracolic gutter