Trauma Injury Scoring Scale for Liver
References:
- AAST (American Association for the Surgery of Trauma) 2018 guideline for hepatic injury scoring.
- Organ injury scaling: spleen, liver, and kidney. Moore EE, Shackford SR, Pachter HL, McAninch JW, Browner BD, Champion HR, Flint LM, Gennarelli TA, Malangoni MA, Ramenofsky ML, Trafton PG. J Trauma. 1989 Dec;29(12):1664-6.
- Organ injury scaling: spleen and liver (1994 revision). Moore EE, Cogbill TH, Jurkovich GJ, Shackford SR, Malangoni MA, Champion HR. J Trauma. 1995 Mar;38(3):323-4.
More about this calculator:
Welcome to our comprehensive toolset designed to help healthcare professionals assess and grade liver, spleen, and kidney injuries based on imaging findings. Our calculators, built around the American Association for the Surgery of Trauma (AAST) guidelines, provide a systematic approach to evaluate the severity of organ injuries. Although these tools are independent and not endorsed by AAST, they are crafted to align closely with their established grading scales.
Liver Injury Grading Calculator
Purpose: To provide an accurate and quick assessment of liver injuries using imaging data, based on the AAST Liver Injury Scale.
Grading Criteria (2018 Revision):
- Grade I: AIS Severity 2
- Subcapsular hematoma <10% surface area
- Parenchymal laceration <1 cm depth
- Capsular tear
- Grade II: AIS Severity 2
- Subcapsular hematoma 10-50% surface area; intraparenchymal hematoma <10 cm in diameter
- Laceration 1-3 cm in depth and ≤10 cm length
- Grade III: AIS Severity 3
- Subcapsular hematoma >50% surface area; ruptured subcapsular or intraparenchymal hematoma
- Intrparenchymal hematoma >10 cm
- Laceration >3 cm depth
- Grade IV: AIS Severity 4
- Parenchymal disruption involving 25-75% of a hepatic lobe
- Active bleeding extending beyond the liver parenchyma into the peritoneum
- Grade V: AIS Severity 5
- Parenchymal disruption >75% of hepatic lobe
- Juxtahepatic venous injury to include retrohepatic vena cava and central major hepatic veins
How to Use the Calculators
- Select the Organ: Choose whether you need to grade an injury to the liver, spleen, or kidney.
- Input Imaging Findings: Enter the details from the imaging studies, such as the extent of hematoma, depth of laceration, and presence of vascular injuries.
- Calculate the Grade: The calculator will process the input data according to the AAST guidelines and provide an injury grade.
- Clinical Application: Use the calculated grade to inform clinical decisions, guide management strategies, and facilitate communication within the trauma care team.
Important Notes
These calculators are independent tools and are not officially endorsed by the AAST. Always consider clinical context and other relevant factors when using these tools for patient care. Refer to the latest AAST guidelines and literature for detailed descriptions and updates on injury grading.
