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Difficulty: MediumSurgical and Procedural Interventions

A 48-year-old woman presents to the emergency department with severe right-sided flank pain, chills, and confusion. Her temperature is 39.2∘C39.2^\circ\text{C} (102.6∘F102.6^\circ\text{F}), blood pressure is 88/54 mmHg88/54\text{ mmHg}, pulse is 122/min122/\text{min}, and respiratory rate is 22/min22/\text{min}. Physical examination reveals severe right costovertebral angle tenderness. A non-contrast CT scan of the abdomen and pelvis demonstrates a 1.2 cm1.2\text{ cm} calculus in the proximal right ureter with severe hydronephrosis and perinephric stranding. Arrange the following steps in the most appropriate chronological order for managing this patient's condition.

  1. 1Initiate intravenous crystalloid fluid resuscitation and obtain blood and urine cultures
  2. 2Administer broad-spectrum intravenous antibiotics
  3. 3Perform emergent decompression of the collecting system via a ureteral stent or percutaneous nephrostomy tube
  4. 4Perform definitive stone removal via ureteroscopy or shock wave lithotripsy

Answer

The correct chronological management order is: 1) Initiate intravenous crystalloid fluid resuscitation and obtain blood and urine cultures, 2) Administer broad-spectrum intravenous antibiotics, 3) Perform emergent decompression of the collecting system, and 4) Perform definitive stone removal.
The correct sequence for managing an infected obstructing ureteral calculus with severe sepsis aligns with standard resuscitation guidelines: Airway/Breathing/Circulation stabilization (fluids and cultures), early empiric treatment (antibiotics), emergent source control (decompression), and delayed definitive management (stone extraction) once the patient is clinically stable.

Step-by-Step Solution

1
Recognize severe urosepsis and initial shock state.
The patient requires immediate hemodynamic stabilization with IV fluids and acquisition of cultures before therapies are administered.
Fluid resuscitation supports perfusion, while cultures ensure correct antibiotic targeting later without being altered by early empiric treatments.
2
Provide empiric medical therapy for the infection.
Broad-spectrum IV antibiotics are administered.
Early antibiotic administration is a cornerstone of sepsis management and significantly reduces mortality when given within the first hour of recognition.
3
Achieve surgical source control.
The collecting system is decompressed using a percutaneous nephrostomy tube or a retrograde ureteral stent.
Medical therapy alone will fail if the infected, obstructed renal pelvis is not drained. The pus under pressure must be relieved emergently.
4
Address the underlying structural cause.
Definitive stone removal via ureteroscopy or lithotripsy is planned for a later date.
Attempting to break or extract the stone during an active infection can cause systemic dissemination of bacteria leading to septic shock and death. This step must wait until the patient has fully recovered from the acute infection.

Key Concept

The management of an infected obstructing ureteral stone requires a strict sequence: initial medical stabilization (fluids/cultures), empiric antibiotics, emergent source control (decompression), and finally, delayed definitive stone removal.
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Topics

Surgical and Procedural Interventions

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