e-CASES: Spleen : AAST organ injury scale
AAST organ injury scale for splenic injuries
Hematoma :Subcapsular, nonexpanding, <10% surface area
Laceration: Capsular tear, nonbleeding, <1cm parenchymal depth
Hematoma: Subcapsular, nonexpanding, 10-50% surface area - Intraparenchymal, <10 cm diameter, nonexpanding
Laceration: Capsular tear, 1-3 cm parenchymal depth, <10 cm length
Hematoma: Subcapsular, >50% surface area or expanding - Ruptured subcapsular or parenchymal hematoma - Intraparenchymal hematoma >10 cm or expanding
Laceration : > 3 cm parenchymal depth
Laceration: Parenchymal disruption involving 25-75% of hepatic lobe or 1-3 Couinaud’s segments within a single lobe
Laceration: Parenchymal disruption involving >75% of hepatic lobe or >3 Couinaud’s segments within single lobe
Vascular: Juxtahepatic venous injuries; i.e., retrohepatic vena cava/central major hepatic veins - Hepatic avulsion
! Advance one grade for multiple injuries to same organ up to grade III
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