Questions and Answers
Which grade of liver injury is characterized by a subcapsular hematoma involving more than 75% of the hepatic lobe?
What type of liver injury includes hepatic vascular disruption?
Which of the following is NOT a condition associated with liver trauma?
What is considered a Grade II liver injury?
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Which type of liver injury may involve juxtahepatic venous injuries?
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What is characterized as Grade 1 under the American Association for the Surgery of Trauma grading system for liver injuries?
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In the grading system for liver injuries, what depth of hematoma is classified as Grade 1?
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Which of the following descriptions does NOT apply to Grade 1 liver injury?
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What outcome would classify a liver injury as more severe than Grade 1?
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Which condition reflects the most critical categorization in liver injury grading beyond Grade 1?
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What is indicated by a grade 6 liver injury following a motor vehicle accident?
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What imaging finding helps confirm a global liver injury?
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What complication is commonly associated with a grade 6 liver injury?
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Which of the following is a potential management consideration for a grade 6 liver injury?
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In the context of liver injury grading, what does the presence of capsular laceration suggest?
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Study Notes
Liver Injury Overview
- Liver trauma can manifest as subcapsular hematoma, intrahepatic hematoma, laceration, contusion, hepatic vascular disruption, and bile duct injury.
Grading of Liver Injury by AAST
- Grading system developed by the American Association for the Surgery of Trauma (AAST).
Grade I
- Involves a subcapsular hematoma covering less than 10% of the hepatic lobe.
- Less than 1 cm deep capsule tear in the liver.
Grade II
- A hematoma greater than 10% of the liver lobe without significant parenchymal injury.
Grade III
- Includes larger lacerations or hematomas, typically over 3 cm deep, affecting multiple segments.
Grade IV
- Involves major lacerations and vascular injuries, possibly including juxtahepatic venous injuries.
Grade V
- Extensive liver damage or near-total vascular disruption, leading to significant hemorrhage.
Grade VI
- Total devascularization of the liver, often resulting from severe trauma, such as in a motor vehicle accident.
Diagnostic Imaging
- Computed tomography (CT) can reveal extensive, global liver injury, essential for assessing the severity of trauma.
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Description
This quiz covers the various types of liver injuries and the grading system established by the American Association for the Surgery of Trauma (AAST). Each grade from I to VI highlights the severity and extent of liver damage. Test your knowledge on liver trauma and its classifications.
