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Difficulty: HardTrauma and Burns

A 41-year-old female warehouse employee is brought to the emergency department after being struck by a reversing forklift and pinned against a concrete wall. She complains of diffuse abdominal pain and dizziness.

Vital signs upon arrival are temperature 36.4∘C36.4^\circ\text{C} (97.5∘F97.5^\circ\text{F}), blood pressure 78/45 mmHg78/45\text{ mmHg}, heart rate 132/min132/\text{min}, and respiratory rate 22/min22/\text{min}.

Primary survey reveals a patent airway, and breath sounds are equal bilaterally. Her neck veins are flat. The pelvis demonstrates no mechanical instability to gentle compression. A focused assessment with sonography for trauma (FAST) demonstrates a substantial anechoic stripe in Morison's pouch.

She immediately receives a transfusion of uncrossmatched type O-negative packed red blood cells. Following this initial resuscitation, her blood pressure rises to 92/55 mmHg92/55\text{ mmHg} and her heart rate slows to 115/min115/\text{min}. The physician notes that her peripheral pulses remain weak and her capillary refill time is delayed.

Which of the following is the most appropriate next step in the management of this patient?

  1. Immediate transfer to the operating room for celiotomyAnswer
  2. B
    Cross-sectional imaging of the abdomen with intravenous contrast
  3. C
    Endovascular evaluation and targeted arterial embolization
  4. D
    Diagnostic peritoneal lavage
  5. E
    Focused observation in the intensive care unit with serial hemoglobin monitoring

Answer

Immediate transfer to the operating room for celiotomy
The correct answer is immediate transfer to the operating room for celiotomy. This patient has sustained blunt abdominal trauma and presents with severe hemorrhagic shock. Although her blood pressure slightly improved following an initial blood transfusion, she remains tachycardic with weak peripheral pulses and delayed capillary refill. This clinical picture characterizes her as a 'transient responder.' According to Advanced Trauma Life Support (ATLS) protocols, a hemodynamically unstable patient or a transient responder with a positive Focused Assessment with Sonography for Trauma (FAST) exam requires emergent exploratory laparotomy (celiotomy) to identify and control the source of intra-abdominal hemorrhage. Any delay for further imaging or diagnostic procedures is contraindicated and severely increases the risk of mortality.

Step-by-Step Solution

1
Identify the patient's hemodynamic status.
The patient initially presented with profound hypotension and tachycardia. After a blood transfusion, her vital signs improved only marginally, with persistent signs of hypoperfusion (weak pulses, delayed capillary refill).
Determining precise hemodynamic stability, including identifying 'transient responders', is the most critical branching point in the trauma evaluation algorithm.
2
Interpret the adjunct primary survey findings.
The FAST examination is positive for free fluid in Morison's pouch (the hepatorenal recess).
A positive FAST in the context of blunt abdominal trauma indicates hemoperitoneum as the likely source of shock.
3
Determine the definitive management step.
A hemodynamically unstable patient, or a transient responder, with a positive FAST requires immediate surgical exploration.
Diagnostic delays in unstable patients increase mortality; immediate source control via celiotomy is absolutely mandated.

Key Concept

Hemodynamically unstable patients (including transient responders) with blunt abdominal trauma and a positive FAST require immediate exploratory laparotomy (celiotomy).
Estimated Time:1m 15s
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Topics

Trauma and Burns

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