Urinary tract infections related to kidney stones

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Breaking the vicious cycle of kidney stones and infections

Discover how urinary stones can cause urinary tract infections and how to treat them effectively with Dr. Sébastien Dominique, urologist in Paris.

Introduction

Introduction

Urinary tract infections can be caused or worsened by the presence of kidney stones. When a stone partially or completely blocks the flow of urine, it creates an environment conducive to bacterial growth. These infections can range from simple cystitis to more serious forms such as acute pyelonephritis. If left untreated, they can lead to significant complications. Appropriate management allows for the identification of the infectious source, the removal of the responsible stone, and the prevention of recurrence.

What are the indicative symptoms?

  • Residual calculus,
  • Urethral stricture,
  • Prostatic hypertrophy,
  • Malformation, diverticulum, reflux.
  • Suprapubic, perineal, testicular discomfort
  • Pain related to chronic prostatitis, stenosis, reflux, incomplete emptying…
What are the common causes?

What are the common causes?

1. Classical uropathogenic bacteria

Escherichia coli, Proteus, enterococci… Multi-resistant germs in case of recurrence.

2. Urinary stones

Local irritation + obstruction followed by superinfection.

3. Anatomical Obstacles

Narrowing of the urethra or ureter, prostate adenoma, valves, diverticula, malformations

4. Chronic prostatitis

A low-grade infection that can maintain symptoms.

5. Vesicoureteral reflux

Ascent of infected urine towards the kidneys.

6. Bladder emptying disorders

Stagnant urine, repeated infections. Aggravating factors : diabetes, immunosuppression, insufficient hydration, repeated urinary catheterizations.

Assessment and recommended examinations

  • Symptoms, frequency, previous treatments.
  • Palpation, rectal examination, abdominal and perineal examination.
  • Urine culture and blood cultures if fever is present
  • Complete blood count, CRP, kidney function
  • Renal and bladder ultrasound
  • Non-contrast CT scan: the gold standard for kidney stones
  • Cystoscopy if bladder abnormality suspected
  • Flowmetry, post-void residual measurement, urodynamics.
  • Specific urine culture, ultrasound, MRI if chronic prostatitis is suspected.
  • In the event of kidney stones, a complete metabolic assessment may be recommended.

Experience

Academic background

What treatments are available for an infection related to a kidney stone?

  • Adjusted after antibiogram.
  • Hospitalization is required if there is a high fever or severe pyelonephritis.
  • Laser (ureteroscopy)
  • Lithotripsy
  • Endoscopy or NLPC depending on the size
  • Extraction of residual fragments
  • Adenoma, stenosis, valve: medical or surgical treatment.
  • Analgesics, anti-inflammatories, alpha-blockers, antispasmodics.
  • Hydration, diet, regular bowel movements, modification of risk factors. Sometimes low-dose antibiotic treatment (limited indications).
  • ECBU control, imaging, field monitoring.

Why consult a specialist urologist?

  • Expertise to identify the underlying cause
  • Risk assessment for complications
  • Access to specialist examinations and minimally invasive techniques
  • Prevention of recurrence and protection of kidney function

My journey

Let me introduce you to my background, my expertise in urology and the methodical way in which I support each patient, from the first consultation to personalized follow-up.

Do you suffer from burning during urination, or recurring burns?

Don’t let these symptoms become chronic. Dr. Sébastien Dominique offers a personalized approach, based on a comprehensive assessment, tailored treatment, and regular follow-up. Urology Practice Paris Opéra – Paris 17th Arrondissement. In-person or teleconsultation available. Book your appointment today.

FAQ – Frequently Asked Questions

Why do kidney stones promote urinary tract infections?

A kidney stone obstructs the flow of urine and provides a surface on which bacteria adhere and multiply, protected from antibiotics. As long as the stone remains, the infection tends to recur.

What are the signs of a kidney stone infection?

Burning during urination, cloudy or foul-smelling urine, fever, and lower back pain. The combination of fever and renal colic suggests obstructive pyelonephritis: this is an absolute emergency requiring kidney drainage.

Why is it necessary to treat the stone and not just the infection?

Antibiotics do not penetrate the core of the stone, where bacteria persist. Without complete removal of the stone, infections recur, and some stones (struvite) even grow larger due to the infection.

How does the care process work?

The infection is initially treated with antibiotics, with emergency kidney drainage (JJ stent) if necessary. The stone is then removed, once the urine has been sterilized, usually by laser ureteroscopy. Follow-up appointments are then scheduled to check for recurrence.

Dr Sébastien Dominique's expertise

Chirurgien Urologue à Paris

Dr Sébastien Dominique

Urinary tract infections related to kidney stones: there are solutions.