Urinary Tract Infection

Normal urine is sterile. When bacteria enters the urinary system it is called urinary tract infection.

urinary-tract-infectionDysuria is the most frequent chief complaint in men with UTI. The combination of dysuria, urinary frequency, and urinary urgency is about 75% predictive for UTI, whereas the acute onset of hesitancy, urinary dribbling, and slow stream is only about 33% predictive for UTI.

Common in children, middle and elderly people.

It is slightly more predominant in women

What is a urinary tract infection?

  • Pyeolephritis means infection affecting the kidneys.
  • Cystitis means infection affecting urinary bladder.
  • Urethritis means infection affecting the urethra
  • Infection can also affect testis, epididymis and prostate
  • Infection can be caused by bacteria, fungus and HIV virus

What are the common causes of UTI:

  • Stone disease
  • Obstuction to the urinary passage
  • Congenital obstruction to kidney outlet
  • Prostate enlargement
  • Urethral stricture
  • Cancer
  • Tuberculosis
  • Common in diabetes
  • Prence of foreign body like catheter
  • Neuropathic bladder


  • Analysis of a urine sample to check for white blood cells, red blood cells or bacteria.
  • Urine culture confirms the presence of infection and the severity of UTI
  • Ultrasound or a computerized tomography (CT) scan

Full assessment of the cause of the problem and effective treatment of underlying condition is essential.

Authored by Dr N Anandan