How Is a Kidney Infection Treated?

A kidney infection, or pyelonephritis, usually requires prompt antibiotic treatment. Depending on the severity, treatment may be given with oral antibiotics or through an IV in hospital. If a blocked urinary tract or stone is causing the problem, restoring urine drainage may also be necessary.

Treatment depends on the severity of the infection, the patient's overall condition, urine culture results, and whether an underlying urinary problem is present.

Treatment may include:

• Antibiotics: These are the main treatment for bacterial kidney infections. The choice should take into account the suspected organism, previous antibiotic exposure, local resistance patterns, and culture results.
• Urine culture: A urine culture and antibiotic susceptibility testing are recommended for patients with pyelonephritis to help guide treatment.
• Oral treatment: Patients with a mild-to-moderate infection who are clinically stable and able to take medicines by mouth may sometimes be treated as outpatients.
• IV antibiotics: Patients who are seriously unwell, require hospitalisation, or cannot tolerate oral medicines may initially need intravenous antibiotics. Treatment can sometimes be changed to oral medication after clinical improvement.
• Fluids and symptom management: Adequate hydration and appropriate medicines for fever or pain may be used as supportive treatment.
• Treating obstruction: If a kidney infection occurs behind a blocked urinary tract, such as from a kidney stone, antibiotics alone may not be sufficient. A procedure such as ureteral stenting or nephrostomy may be required to restore urine drainage.

Doctors may also use ultrasound or other imaging when there is concern about kidney stones, urinary obstruction, deterioration, or failure to improve with treatment.

Patients should be reassessed if symptoms are worsening or do not improve within approximately 48–72 hours of appropriate treatment, as this can indicate resistant infection, obstruction, an abscess, or another underlying problem.

SCI International Hospital 

At SCI International Hospital, Dr. Gautam Banga evaluates kidney infections based on the severity of symptoms and the possibility of an underlying urological cause. When appropriate, evaluation may include urine culture, blood tests, and imaging to identify kidney stones, urinary obstruction, urinary retention, or other conditions that could interfere with successful treatment.