An obstructed urinary system associated with infection/sepsis is a urologic emergency.
Treatment requires antibiotics and urgent drainage of the urinary tract.
Drainage can be achieved with a double-J ureteral stent or percutaneous nephrostomy. Both methods are effective for decompressing the urinary tract.
Generally, no. In a septic patient with an obstructed urinary tract, we first drain the infection and stabilize the patient.
Definitive treatment of the stone is performed afterward, once the infection is under control.
Rule every student should remember
PUS + PRESSURE = DRAINAGE
The EAU recommends urgently decompressing the system, starting antibiotics immediately, obtaining cultures, and deferring definitive stone treatment until the sepsis has resolved.
In addition to infection associated with obstruction:
When pain cannot be controlled medically, drainage or endoscopic treatment may be necessary.
🚨 Alert for the exam and for practice
Fever + obstructive stone does not mean "give antibiotics and wait". It means antibiotics + urgent drainage.
Final pearl
With a kidney stone, stone size matters. But before looking at the millimeters, we have to look at the patient: fever, sepsis, renal function, solitary kidney, and refractory pain can turn a common stone into a urologic emergency.
Practical algorithm for renal colic
1. A patient with an obstructive ureteral stone, fever, hypotension, and signs of sepsis. What is the priority?
A. Wait for spontaneous passage B. Immediate SWL C. Urgent drainage of the urinary tract + antibiotics D. Analgesia only
Correct: C.
2. What are the two main alternatives for urgently decompressing an obstructed, infected urinary tract?
A. SWL and RIRS B. Double-J stent and percutaneous nephrostomy C. TURP and cystoscopy D. Urinary catheter and alpha-blocker
Correct: B.
3. In urinary sepsis secondary to an obstructive stone, definitive stone treatment should always be performed immediately.
A. True B. False
Correct: B. First drain and stabilize; definitive treatment is deferred.
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