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Difficulty: EasyUrologic Surgery

A 48-year-old female patient is brought to the emergency department experiencing high fever, rigors, and intense right-sided back pain. Her temperature is 39.4∘C39.4^\circ\text{C} (102.9∘F102.9^\circ\text{F}), heart rate is 118/min118/\text{min}, and blood pressure is 88/56 mm Hg88/56\text{ mm Hg}. A noncontrast CT scan of the abdomen and pelvis demonstrates an 8-mm8\text{-mm} calculus in the proximal right ureter with associated moderate hydronephrosis. Arrange the following clinical steps in the most appropriate chronological sequence for managing this patient.

  1. 1Acquire cultures and administer empiric intravenous antimicrobial therapy.
  2. 2Relieve the urinary obstruction by placing a ureteral stent or nephrostomy tube.
  3. 3Complete a course of culture-guided antibiotics to resolve the systemic infection.
  4. 4Perform elective surgical extraction of the calculus.

Answer

The correct sequence is to first stabilize hemodynamically and administer empiric antibiotics, followed immediately by decompression of the obstructed kidney. Once the infection is cleared with a complete antibiotic course, definitive stone removal is performed.
An obstructing ureteral calculus complicated by a urinary tract infection constitutes a urologic emergency. The standard of care strictly dictates a staged approach. First, the patient must be hemodynamically stabilized and started on empiric intravenous antibiotics. Second, source control must be achieved immediately by placing a ureteral stent or a percutaneous nephrostomy tube to drain the purulent urine. Third, the patient completes a course of tailored antibiotics to fully eradicate the infection. Finally, definitive surgical management of the stone is performed electively once the patient is completely infection-free.

Step-by-Step Solution

1
Recognize the urologic emergency.
The patient is diagnosed with an infected obstructing ureteral stone complicated by systemic sepsis.
The combination of fever, hypotension, tachycardia, and an obstructing calculus indicates a life-threatening infection requiring staged management.
2
Initiate medical stabilization.
Blood and urine cultures are drawn, followed by empiric intravenous antibiotics and fluid resuscitation.
Early antimicrobial administration is critical in preventing multiorgan failure secondary to sepsis.
3
Achieve source control.
The urinary system is decompressed using a ureteral stent or percutaneous nephrostomy.
Antibiotics cannot effectively penetrate a closed, obstructed space filled with purulence; mechanical drainage is mandatory.
4
Eradicate infection prior to definitive surgery.
The stone is left in place while the patient completes targeted antibiotic therapy, with definitive extraction occurring electively.
Manipulating the stone during an active infection risks systemic bacterial seeding and exacerbation of septic shock.

Key Concept

Staged management of infected hydronephrosis
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Topics

Urologic Surgery

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