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Difficulty: EasyUrologic Surgery

A 55-year-old woman is brought to the emergency department from a nursing facility due to fever, severe left-sided back pain, and altered mental status. Her blood pressure is 85/50 mmHg, heart rate is 122/min, and temperature is 39.4°C (102.9°F). Laboratory studies show a leukocyte count of 19,000/mm³. A non-contrast CT scan of the abdomen and pelvis reveals an 8-mm radiopaque calculus in the proximal left ureter with associated moderate hydroureteronephrosis and perinephric stranding. Arrange the following management steps in the most appropriate chronological sequence for this patient.

  1. 1Administration of intravenous fluids and broad-spectrum antibiotics
  2. 2Urgent placement of a percutaneous nephrostomy tube or ureteral stent
  3. 3Definitive ureteroscopic stone extraction and laser lithotripsy
  4. 4Outpatient 24-hour urine collection and metabolic evaluation

Answer

The correct chronological sequence is: 1) Intravenous fluids and broad-spectrum antibiotics, 2) Urgent placement of a percutaneous nephrostomy tube or ureteral stent, 3) Definitive ureteroscopic stone extraction, and 4) Outpatient 24-hour urine collection.
In cases of obstructive pyelonephritis with sepsis, the strict chronological order of management is: First, initial medical stabilization (intravenous fluids and broad-spectrum antibiotics); Second, emergent source control by draining the infected system (percutaneous nephrostomy or ureteral stent); Third, delayed definitive management of the obstructing stone (lithotripsy) once the infection has cleared; and finally, long-term preventative care (metabolic evaluation) in the outpatient setting.

Step-by-Step Solution

1
Identify the primary clinical emergency in the presentation.
The patient has obstructive pyelonephritis progressing to septic shock, indicated by hypotension, tachycardia, fever, leukocytosis, and an obstructing ureteral stone.
Recognizing life-threatening sepsis dictates the immediate need for medical stabilization before any surgical intervention is attempted.
2
Determine the requirement for urgent surgical source control.
Following initial medical stabilization, the infected urine must be drained via a percutaneous nephrostomy tube or a double-J ureteral stent.
An obstructed, infected kidney represents a closed-space infection (pus under pressure); without drainage, sepsis will rapidly progress despite antibiotic therapy.
3
Establish the correct timing for definitive stone management and secondary prevention.
Ureteroscopy with lithotripsy is delayed until the patient is completely infection-free. The metabolic evaluation is delayed even further into the outpatient recovery period.
Manipulating a stone during active infection risks systemic dissemination of bacteria. Furthermore, metabolic testing during acute illness yields inaccurate results.

Key Concept

Sequential management of obstructive pyelonephritis and urosepsis
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Topics

Urologic Surgery

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