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Difficulty: HardTrauma and Burns

Match each of the following clinical presentations of trauma patients with the most appropriate definitive next step in diagnosis or management.

  • A 35-year-old male with a blood pressure of 70/40 mm Hg following a motor vehicle collision; FAST exam demonstrates free fluid in the hepatorenal recess.Immediate exploratory laparotomy
  • A 28-year-old female with a blood pressure of 80/50 mm Hg after a severe pelvic crush injury; FAST is negative, and hypotension persists after pelvic binder application and blood transfusion.Pelvic angiography
  • A 42-year-old male, hemodynamically stable after a high-speed deceleration injury; initial chest radiograph reveals a widened mediastinum and left apical cap.Computed tomography angiography (CTA) of the chest
  • A 22-year-old male with a blood pressure of 120/80 mm Hg following a motorcycle crash; physical exam reveals blood at the urethral meatus and a high-riding prostate.Retrograde urethrography

Answer

The clinical presentations match to their respective next steps as follows: blunt trauma with unstable vitals and positive FAST requires immediate exploratory laparotomy; unstable pelvic fracture with negative FAST requires pelvic angiography; deceleration injury with widened mediastinum in a stable patient requires CTA of the chest; and suspected urethral injury with blood at the meatus requires retrograde urethrography.
Each matching pair represents a critical decision pathway in trauma surgery. Hemodynamically unstable patients with intra-abdominal fluid on FAST have active intraperitoneal hemorrhage requiring immediate exploratory laparotomy. Unstable patients with pelvic fractures and a negative FAST have retroperitoneal bleeding; after stabilizing the pelvis with a binder, pelvic angiography (or preperitoneal packing) is required to identify and embolize arterial hemorrhage. Hemodynamically stable patients with signs of blunt aortic injury (widened mediastinum, left apical cap) require definitive imaging with CTA of the chest to diagnose aortic disruption. Patients with physical signs of urethral injury (blood at the meatus, high-riding prostate) must undergo retrograde urethrography to evaluate urethral integrity before any catheterization, which could convert a partial tear into a complete transection.

Step-by-Step Solution

1
Evaluate the hemodynamic stability of each patient.
Two patients are hemodynamically unstable (BP 70/40 and BP 80/50), while two are stable.
Hemodynamic stability is the primary decision node in Advanced Trauma Life Support (ATLS), dictating whether a patient proceeds to the operating room/angiography suite or to the CT scanner.
2
Analyze the primary survey adjuncts and physical exam findings for each patient.
Patient 1 has intraperitoneal fluid. Patient 2 has a pelvic fracture without intraperitoneal fluid. Patient 3 has radiographic signs of aortic injury. Patient 4 has signs of urethral injury.
Adjuncts and physical exams localize the source of pathology (e.g., intra-abdominal versus retroperitoneal bleeding).
3
Assign the definitive diagnostic or therapeutic intervention based on algorithms.
Patient 1 -> Laparotomy. Patient 2 -> Pelvic angiography. Patient 3 -> CTA chest. Patient 4 -> Retrograde urethrography.
These pairings represent the gold-standard ATLS guidelines for the next best step in trauma management.

Key Concept

Advanced Trauma Life Support (ATLS) diagnostic and therapeutic algorithms based on hemodynamic stability and mechanism of injury.
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Topics

Trauma and Burns

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