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Difficulty: MediumUrologic Surgery

A 54-year-old woman is brought to the emergency department for severe right flank pain, nausea, and chills over the past 24 hours. Her temperature is 39.4∘C39.4^\circ\text{C} (102.9∘F102.9^\circ\text{F}), blood pressure is 86/52 mmHg86/52 \text{ mmHg}, pulse is 122/min122/\text{min}, and respirations are 22/min22/\text{min}. Physical examination demonstrates marked right costovertebral angle tenderness. Laboratory studies reveal a leukocyte count of 19,500/mm319,500/\text{mm}^3 and a serum creatinine of 1.8 mg/dL1.8 \text{ mg/dL}. A non-contrast computed tomography scan of the abdomen and pelvis demonstrates an 8-mm8\text{-mm} calculus in the proximal right ureter with associated moderate hydronephrosis and perinephric fat stranding. Arrange the following management steps in the most appropriate chronological sequence for this patient.

  1. 1Intravenous crystalloid fluid resuscitation and acquisition of blood and urine cultures
  2. 2Administration of broad-spectrum intravenous antibiotics
  3. 3Urgent decompression of the right collecting system via ureteral stent or percutaneous nephrostomy
  4. 4Definitive surgical stone management via ureteroscopy or shock wave lithotripsy

Answer

The correct sequence is: 1) Fluid resuscitation and culture acquisition, 2) Broad-spectrum antibiotics, 3) Urgent urinary tract decompression, 4) Delayed definitive surgical stone management.
The patient presents with septic shock secondary to an obstructing ureteral calculus. The correct chronological sequence of management follows standard sepsis guidelines combined with urologic source control. First, hemodynamic stabilization with intravenous fluids and acquisition of cultures must be performed. Second, broad-spectrum antibiotics are administered immediately after cultures are drawn. Third, because medical therapy alone is insufficient in the presence of an obstructed, purulent system, urgent urologic decompression via a ureteral stent or percutaneous nephrostomy tube is necessary for source control. Finally, definitive surgical stone removal (such as ureteroscopy or lithotripsy) must be delayed until the patient is clinically stable and the infection has completely resolved, avoiding the risk of exacerbating sepsis through pressurized renal irrigation.

Step-by-Step Solution

1
Identify the primary diagnosis and patient's clinical stability.
The patient has an infected obstructing ureteral stone complicated by septic shock (hypotension, fever, leukocytosis).
Determining the presence of sepsis dictates the urgency and sequence of management steps.
2
Determine the initial medical stabilization protocol.
Immediate fluid resuscitation and obtaining blood and urine cultures are the first priorities.
Hemodynamic support is life-saving, and cultures must be drawn before antibiotics to ensure the responsible pathogen is correctly identified for targeted therapy.
3
Establish the next immediate medical step following culture acquisition.
Administration of broad-spectrum intravenous antibiotics.
Early antibiotic administration in septic patients significantly reduces mortality and should be given as soon as cultures are drawn.
4
Determine the most appropriate surgical intervention for an infected obstructing stone.
Urgent decompression of the collecting system via a ureteral stent or percutaneous nephrostomy tube.
Antibiotics alone cannot penetrate an obstructed, purulent collecting system; source control via drainage is mandatory to treat the sepsis.
5
Evaluate the timing for definitive stone removal.
Definitive stone removal is delayed.
Performing ureteroscopy or lithotripsy during active infection can cause systemic dissemination of bacteria due to pressurized irrigation and is strictly contraindicated until the infection has cleared.

Key Concept

Management of a septic obstructing ureteral stone involves immediate medical stabilization (fluids, cultures, antibiotics) followed by urgent collecting system decompression (stent/nephrostomy), with definitive stone removal delayed until the infection resolves.
Estimated Time:1m 30s
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Topics

Urologic Surgery

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