ABSTRACT
OIS as determined by pre-operative CT can be fallible and instances of both understaging and overstaging by CT have been documented ( 3 ).
A recent attempt to validate the AAST OIS identified 14,919 isolated hepatic injuries, and 21,532 with associated injuries, in the American College of Surgeons National Trauma Databank between 2000 and 2004 ( 5 ). A significant increase in outcomes including mortality, organ-specific operative rate, and hospital charges were associated with increasing OIS grades.
