Duodenal Trauma is a topic covered in the 5-Minute Emergency Consult.

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Basics

Description

  • Characteristics of duodenum:
    • 12 in long
    • C-shaped
    • From pylorus to ligament of Treitz
    • Divided into 4 sections:
      • Last 3 sections retroperitoneal along with distal portion of 1st section
    • Lies mostly over 1st 3 lumbar vertebrae
    • 2nd section is most commonly injured
  • Types of injury:
    • Duodenal wall hematoma
    • Wall perforation
    • Hemorrhage, including retroperitoneal
    • Crush
  • Incidence of duodenal injury is 3–5% of all traumatic abdominal injuries
  • Penetrating trauma accounts for ∼75% of duodenal injuries:
    • Mortality ranges from 13–28%
    • Associated with exsanguination
  • Blunt duodenal trauma has a higher mortality due to greater force of injury and often delayed diagnosis due to retroperitoneal location:
    • If injury is diagnosed in <24 hr, mortality rate is about 11%
    • If >24 hr, mortality rate approaches 40%
    • Late mortality usually from sepsis

Pediatric Considerations
  • Majority secondary to recreational injuries (e.g., bicycle handlebar injuries)
  • Intramural duodenal hematomas may occur in nonaccidental trauma:
    • If suspected, prompt referral to appropriate child protective agency is required
  • In children, hematoma is most commonly seen in 1st portion of duodenum


Pregnancy Considerations
  • Retroperitoneal hemorrhage more common due to increased pelvic and abdominal vascularity
  • Large uterus serves as protection from bowel injury.
  • Peritoneal irritation is blunted in the pregnant patient; therefore, greater index of suspicion

Etiology

  • Blunt trauma:
    • Shear strain: Abrupt acceleration/deceleration at point of attachment (most common retroperitoneal injury with rapid deceleration)
    • Tensile strain: Direct compression or stretching of tissue
  • Penetrating trauma:
    • Most common cause of injury
    • Creates cavitations, can lead to infection

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Citation

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TY - ELEC T1 - Duodenal Trauma ID - 307536 Y1 - 2016 PB - 5-Minute Emergency Consult UR - https://emergency.unboundmedicine.com/emergency/view/5-Minute_Emergency_Consult/307536/all/Duodenal_Trauma ER -