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Difficulty: HardUrologic Surgery

A 3434-year-old man is brought to the emergency department after a high-speed motorcycle collision. He has a heart rate of 122122/min and a blood pressure of 86/5486/54 mm Hg. Primary survey reveals an unstable pelvic ring fracture. Genitourinary examination demonstrates blood at the urethral meatus, a large scrotal hematoma, and a high-riding prostate on digital rectal examination. Arrange the following management steps in the optimal sequential order for this patient, proceeding from initial trauma resuscitation to definitive urologic repair.

  1. 1Intravenous fluid resuscitation and pelvic binder application
  2. 2Retrograde contrast study of the urethra
  3. 3Suprapubic cystostomy tube insertion
  4. 4Contrast evaluation of the bladder via the suprapubic tube
  5. 5Delayed reconstructive anastomotic urethroplasty

Answer

The correct sequence begins with hemodynamic stabilization (fluid resuscitation and pelvic binder), followed by diagnostic evaluation of the urethra (retrograde contrast study), acute management of the disruption (suprapubic cystostomy), secondary diagnostic evaluation (bladder contrast study), and concludes with long-term management (delayed reconstructive urethroplasty).
The management of major pelvic trauma with suspected urologic injury follows a strict algorithmic hierarchy. First, life-threatening hemorrhage must be controlled with a pelvic binder and fluid resuscitation. Once hemodynamically stabilizing measures are underway, the clinically suspected urethral injury (indicated by blood at the meatus, scrotal hematoma, and a high-riding prostate) must be evaluated with a retrograde contrast study. If a disruption is confirmed, transurethral catheterization is absolutely contraindicated, necessitating a suprapubic cystostomy for safe urinary diversion. With the bladder safely accessible via the suprapubic tube, a contrast study of the bladder is required to rule out an associated bladder rupture. Finally, definitive surgical repair of the posterior urethra is deferred for several months to optimize surgical conditions and minimize the risks of incontinence and impotence.

Step-by-Step Solution

1
Prioritize trauma protocols for hemodynamic instability.
Intravenous fluid resuscitation and pelvic binder application are performed first.
The patient is hypotensive and tachycardic with an unstable pelvic fracture, making circulatory support the immediate life-saving priority.
2
Evaluate the clinically suspected urethral injury.
A retrograde contrast study of the urethra is conducted.
Blood at the meatus and a high-riding prostate strongly suggest a posterior urethral injury; a contrast study is mandatory prior to any bladder catheterization attempt.
3
Establish safe urinary diversion.
A suprapubic cystostomy tube is inserted.
Because transurethral catheterization is contraindicated in complete urethral disruption, a suprapubic approach safely drains the bladder.
4
Assess for concomitant lower urinary tract injuries.
Contrast evaluation of the bladder is performed via the suprapubic tube.
Severe pelvic trauma carries a high risk of extraperitoneal or intraperitoneal bladder rupture, which must be ruled out once access is established.
5
Plan definitive surgical management.
Delayed reconstructive anastomotic urethroplasty is scheduled.
Immediate repair of posterior urethral injuries in the setting of major pelvic trauma has high complication rates; delayed repair allows tissue planes to heal and the hematoma to resolve.

Key Concept

Algorithm for the management of posterior urethral injury in the setting of major pelvic trauma
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Topics

Urologic Surgery

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