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Step 1: Does This Patient Need Surgery NOW?
- Obvious penetrating injury to abdomen
- Peritonitis
- Hypotensive
Step 2: FAST Scan
- Performed with bedside ultrasound machine
- Blood/intra-peritoneal fluid is hypoechoic (black) in appearance
- Four views required
- Right upper quadrant
- Probe marker points towards patient’s head
- “Morrisons Pouch”
- Potential space between liver and right kidney
- Left upper quadrant
- Probe marker towards patient’s head
- Most difficult view to obtain
- Potential space around spleen and between spleen and left kidney
- Suprapubic
- Probe marker towards patient’s head
- Looking for thin rim of fluid between bladder wall and bowel wall
- Subxiphoid
- Hold probe flat and aim through liver towards heart
- Looking for fluid around heart and evidence of cardiac tamponade
- Right upper quadrant
Step 3: Consider the Mechanism
- Low risk
- Low speed MVAs
- Falling down only a few steps
- High risk
- Falling off ladder/roof
- High velocity MVA/impact
Step 4: Perform Careful Abdominal Exam
- Pain
- Bruising/Seatbelt sign
- Distension
- Peritonitis
- Rigidity
- Rebound
- Guarding
Step 5: Obtain Imaging if High Risk Mechanism or Abnormal Exam
- CT Abdomen/Pelvis with IV contrast
- If normal CT scan but you still have clinical concern- ADMIT
- Serial abdominal exams
- CT notorious for missing small bowel and diaphragmatic injuries
Additional Reading
- Trauma Basics (EM Clerkship)
- FAST Examination (SAEM)
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