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Difficulty: Very hardTrauma and Burns

A 29-year-old male is brought to the emergency department after being crushed between a concrete loading dock and a reversing forklift. On arrival, his airway is patent, and breath sounds are equal bilaterally. Vital signs show a blood pressure of 76/40 mm Hg and a heart rate of 142/min. Physical examination reveals a mechanically unstable pelvis in response to anteroposterior compression. Genitourinary examination demonstrates a scrotal hematoma and a prominent drop of blood at the urethral meatus. A commercial pelvic binder is immediately applied, and a massive transfusion protocol is initiated. Ten minutes later, after the rapid infusion of uncrossmatched packed red blood cells and fresh frozen plasma, his blood pressure remains 78/42 mm Hg. A Focused Assessment with Sonography for Trauma (FAST) examination demonstrates a large stripe of anechoic fluid in the hepatorenal and splenorenal recesses. Which of the following is the most appropriate next step in management?

  1. Exploratory laparotomyAnswer
  2. B
    Retrograde urethrography
  3. C
    Computed tomography of the abdomen and pelvis
  4. D
    Pelvic angiography
  5. E
    Preperitoneal pelvic packing

Answer

Exploratory laparotomy is the most appropriate next step to immediately control life-threatening intraperitoneal hemorrhage.
This patient is in persistent hemorrhagic shock following severe blunt trauma. The initial evaluation reveals two major potential sources of bleeding: a severe pelvic fracture (causing retroperitoneal hemorrhage) and an intra-abdominal solid organ injury (indicated by the positive FAST examination). According to standard ATLS algorithms, any hemodynamically unstable patient with a positive FAST examination must undergo immediate exploratory laparotomy. Intraperitoneal bleeding is rapidly fatal and must be controlled surgically before addressing the pelvic fracture or conducting further diagnostic studies. The pelvic binder was appropriately placed to temporarily tamponade the retroperitoneal space, bridging the patient to the operating room for laparotomy.

Step-by-Step Solution

1
Assess the patient's hemodynamic status and mechanism of injury.
The patient is in severe, refractory hemorrhagic shock (BP 78/42 mm Hg) following blunt crush trauma, with evidence of pelvic and genitourinary injuries.
Hemodynamic instability dictates the immediate trauma algorithm, precluding routine diagnostic imaging.
2
Evaluate the source of the hemorrhage using the FAST examination.
The FAST examination is strongly positive for intraperitoneal free fluid.
Differentiating between retroperitoneal hemorrhage (from the fractured pelvis) and intraperitoneal hemorrhage (from intra-abdominal organs) determines the surgical approach.
3
Prioritize interventions based on Advanced Trauma Life Support (ATLS) principles.
The positive FAST in an unstable patient mandates immediate exploratory laparotomy, superseding both pelvic-specific hemorrhage control and genitourinary diagnostics.
Intraperitoneal bleeding is rapidly fatal and must be surgically controlled before addressing the retroperitoneum or the urethral injury.

Key Concept

In a hemodynamically unstable trauma patient with a pelvic fracture, a positive FAST examination dictates immediate exploratory laparotomy to control intraperitoneal hemorrhage, taking absolute precedence over pelvic angiography or genitourinary evaluation.
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Trauma and Burns

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