Liver Repair & Packing (Trauma)
What the Examiner Expects
Operative management of traumatic liver injuries including direct repair, hemostatic techniques, and perihepatic packing. The examiner expects you to know the AAST liver injury grading (I–VI), that most blunt liver injuries are managed nonoperatively with serial exams and CT monitoring, and that operative intervention is required for hemodynamic instability despite resuscitation. The Pringle maneuver (clamping the hepatoduodenal ligament) controls portal and arterial inflow — if bleeding stops, the source is hepatic artery or portal vein; if it continues, the source is hepatic vein or IVC. Perihepatic packing with planned re-exploration is the cornerstone of damage control for severe liver injuries.
Key Examiner Focus Points
- Most liver injuries (grade I–III) are managed nonoperatively if hemodynamically stable
- Operative: Pringle maneuver to differentiate hepatic arterial/portal from hepatic vein bleeding
- Perihepatic packing is the most effective hemorrhage control technique for severe injury
- Deep suturing (hepatorrhaphy) for parenchymal lacerations
- Grade V with juxtahepatic venous injury: packing, consider atriocaval shunt (high mortality)
Common Curveballs
The Pringle maneuver fails to control bleeding from a deep posterior laceration
Hepatic vein or retrohepatic IVC injury. This is among the most lethal injuries in trauma. Pack heavily posteriorly and superiorly. Options include: total hepatic vascular isolation (Pringle + suprahepatic and infrahepatic IVC clamping), atriocaval shunt (Schrock shunt — very high mortality), or simply pack and close (damage control) with planned angioembolization postoperatively.
Grade III liver laceration in a stable patient — CT shows moderate hemoperitoneum
Nonoperative management. ICU admission, serial abdominal exams, trending hemoglobin, and repeat CT in 24–48 hours if concerning. Angioembolization if there is active contrast extravasation (blush) on CT. Most stable liver injuries, even high-grade, heal without surgery.
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