AAST spleen injury scale

The 1994 revision of American Association for the Surgery of Trauma (AAST) splenic injury scale is the most widely used grading system for splenic trauma at the time of writing (mid 2016). 

Classification

  • grade I
  • grade II
    • subcapsular haematoma 10-50% of surface area
    • intraparenchymal haematoma <5 cm in diameter
    • laceration 1-3 cm depth not involving trabecular vessels
  • grade III
    • subcapsular haematoma >50% of surface area or expanding
    • intraparenchymal haematoma >5 cm or expanding
    • laceration >3 cm depth or involving trabecular vessels
    • ruptured subcapsular or parenchymal haematoma
  • grade IV
    • laceration involving segmental or hilar vessels with major devascularisation (>25% of spleen)
  • grade V
    • shattered spleen
    • hilar vascular injury with splenic devascularisation

See also


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Article Information

rID: 2074
Section: Classifications
Tag: trauma
Synonyms or Alternate Spellings:
  • AAST splenic injury grading system
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    Figure 1: diagram
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    Case 1: grade I
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    Case 2: grade II
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    Case 3: grade III
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    Case 4: grade IV
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    Case 5: grade IV
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    Case 6: grade V
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    Case 7: grade V
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