Management of Liver Laceration in Trauma Patients

Initial Assessment – Hemodynamic Status

• Hemodynamic status is the single decisive factor that directs patients with liver laceration toward either non‑operative management (NOM) or immediate operative intervention. [World Society of Emergency Surgery] [1][2]
• Patients are classified as unstable when they exhibit skin vasoconstriction (cool, clammy skin with delayed capillary refill) or altered level of consciousness/respiratory distress. [World Society of Emergency Surgery] 3

Diagnostic Imaging

• In unstable patients, an immediate E‑FAST examination is required to detect intra‑abdominal free fluid. [World Society of Emergency Surgery] [1][2]
• Unstable patients should proceed directly to operative management without awaiting CT imaging. [World Society of Emergency Surgery] [3][4]
• In stable patients, contrast‑enhanced CT is the gold‑standard imaging modality for liver injury assessment. [World Society of Emergency Surgery] [1][2]5
• Contrast‑enhanced CT provides a sensitivity and specificity of 96‑100 % for detecting liver injuries. [World Society of Emergency Surgery] 2
• Delayed‑phase CT helps differentiate active arterial bleeding from contained vascular injuries. [World Society of Emergency Surgery] 2
• E‑FAST has low sensitivity (≈ 42‑52 % in pediatric trauma) and must not be used alone to exclude liver injury in stable patients; CT confirmation is mandatory. [World Society of Emergency Surgery] 2

WSES Classification System

• The World Society of Emergency Surgery (WSES) classification combines the American Association for the Surgery of Trauma (AAST) grade with hemodynamic status to guide treatment decisions. [World Society of Emergency Surgery] [3][4]

Non‑Operative Management (NOM)

• NOM is the preferred treatment for all hemodynamically stable liver injuries, irrespective of anatomic grade. [World Society of Emergency Surgery] [1][2]5
• Absolute contraindications to NOM: hemodynamic instability, clinical peritonitis, or concomitant injuries that mandate surgery. [World Society of Emergency Surgery] [3][4]5
• Facilities offering NOM must have immediate access to blood products (and ideally to angiography/embolization). [World Society of Emergency Surgery] 5
• Mandatory serial clinical evaluation includes frequent physical examinations by trained clinicians. [World Society of Emergency Surgery] 1
• Angiography with embolization is recommended as first‑line therapy for stable patients showing arterial blush (contrast extravasation) on CT. [World Society of Emergency Surgery] [3][4]5
• In stable children, the presence of contrast blush on CT is not an absolute indication for embolization. [World Society of Emergency Surgery] [1][2]
• Only ≈ 47 % of CT‑identified active bleeding is confirmed on angiography, highlighting potential over‑triage. [World Society of Emergency Surgery] 2

Operative Management

• Unstable patients (WSES Grade IV) and those who fail non‑operative resuscitation must undergo immediate operative management. [World Society of Emergency Surgery] [1][2]
• Major hepatic resections should be avoided during the initial damage‑control operation; they are reserved for delayed, definitive procedures performed by experienced surgeons. [World Society of Emergency Surgery] 1
• Post‑operative angioembolization is essential for persistent arterial bleeding after damage‑control surgery and should be readily available. [World Society of Emergency Surgery] 1
• Temporary abdominal closure is indicated when there is a high risk of abdominal compartment syndrome, a planned second‑look operation, or ongoing physiologic instability. [World Society of Emergency Surgery] 1

Special Situations

• Concomitant head or spinal trauma: NOM may be pursued if reliable neurological examination is possible and specific neuro‑trauma hemodynamic targets (SBP > 110 mmHg or CPP 60‑70 mmHg) are achieved. [World Society of Emergency Surgery] [1][2]
• Low‑resource settings: NOM can be considered when the patient is hemodynamically stable, no associated injuries are evident, and serial examinations, imaging, and laboratory studies are negative. [World Society of Emergency Surgery] [1][2]

Management of Complications

• Persistent arterial bleeding – treat with angiography/embolization when the patient is not in severe shock. [World Society of Emergency Surgery] 1
• Hepatic artery pseudo‑aneurysm – manage with angiography and embolization to prevent rupture. [World Society of Emergency Surgery] 1
• Intra‑hepatic abscess – percutaneous drainage is the preferred therapy. [World Society of Emergency Surgery] 1
• Biloma (symptomatic or infected) – percutaneous drainage; combined percutaneous and endoscopic approaches when drainage alone is insufficient. [World Society of Emergency Surgery] 1

Post‑Injury Care

• Mechanical thromboprophylaxis is safe for all patients without absolute contraindications. [World Society of Emergency Surgery] 1
• Low‑molecular‑weight heparin (LMWH) prophylaxis should be initiated as early as feasible after trauma. [World Society of Emergency Surgery] 1
• Early mobilization is recommended for hemodynamically stable patients. [World Society of Emergency Surgery] 1
• Early enteral nutrition should be started promptly when no contraindications exist. [World Society of Emergency Surgery] 1

Pitfalls to Avoid

• Attempting NOM in centers lacking immediate angiography, operating‑room access, or blood product availability markedly increases risk. [World Society of Emergency Surgery] [3][4]5
• Performing major hepatic resections during the initial damage‑control operation significantly raises mortality. [World Society of Emergency Surgery] 1

Management of Liver Trauma

Initial Assessment and Diagnosis

• The diagnostic approach should be determined by the patient's hemodynamic status upon presentation 6
• Extended Focused Assessment with Sonography for Trauma (E-FAST) is rapid and effective for detecting intra-abdominal free fluid in the initial evaluation 6
• CT scan with intravenous contrast is the gold standard for evaluating liver injuries in hemodynamically stable patients and should always be performed in patients being considered for non-operative management (NOM) 7, 6

Management Algorithm Based on Hemodynamic Status

For Hemodynamically Stable Patients

• Non-operative management (NOM) should be the treatment of choice for all hemodynamically stable minor, moderate, and severe injuries in the absence of other internal injuries requiring surgery 7, 8
• Serial clinical evaluations must be performed to detect changes in clinical status during NOM 6
• Intensive care unit admission is required only for moderate and severe lesions 7
• Angiography/angioembolization (AG/AE) may be considered as a first-line intervention in hemodynamically stable patients with arterial blush on CT scan 6

For Hemodynamically Unstable Patients

• Hemodynamically unstable and non-responder patients should undergo operative management (OM) 7, 9
• Primary surgical intention should be to control hemorrhage and bile leak while initiating damage control resuscitation 9
• At laparotomy, if no major bleeding is present, compression alone or electrocautery, bipolar devices, argon beam coagulation, topical hemostatic agents, simple suture of the hepatic parenchyma, or omental patching may be sufficient to stop the bleeding 9, 10
• For major hemorrhage, more aggressive procedures including manual compression and hepatic packing, ligation of vessels in the wound, hepatic debridement and finger fracture, balloon tamponade, or shunting procedures may be used 9
• Major hepatic resections should be avoided initially and only considered in subsequent operations for large areas of devitalized liver tissue 9
• Angioembolization is useful for persistent arterial bleeding after non-hemostatic or damage control procedures 7
• Resuscitative endovascular balloon occlusion of the aorta (REBOA) may be used in hemodynamically unstable patients as a bridge to other more definitive procedures for hemorrhage control 7

Management of Complications

• Intrahepatic abscesses should be treated with percutaneous drainage 7
• Delayed hemorrhage without severe hemodynamic compromise may be managed with AG/AE 7
• Hepatic artery pseudoaneurysm should be managed with AG/AE to prevent rupture 7
• Symptomatic or infected bilomas should be managed with percutaneous drainage 7
• For post-traumatic biliary complications not suitable for percutaneous management alone, a combination of percutaneous drainage and endoscopic techniques may be considered 7

Follow-up Care

• Mechanical thromboprophylaxis should be considered in all patients without absolute contraindications 6
• LMWH-based prophylaxis should be started as soon as possible following trauma 6
• Early mobilization should be achieved in stable patients 6
• In the absence of contraindications, enteral feeding should be started as soon as possible 6

Special Considerations

• In patients with concomitant head trauma and/or spinal cord injuries, NOM should be attempted with reliable clinical exam, unless the patient cannot achieve specific hemodynamic goals for the neurotrauma 9, 11
• Specific hemodynamic goals for patients with neurotrauma include SBP > 110 mmHg and/or a CPP between 60-70 mmHg 9, 11
• In low-resource settings, NOM could be considered in patients with hemodynamic stability without evidence of associated injuries, with negative serial physical examinations and negative imaging and blood tests 7