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[Asymptomatic bacteriuria].

G Stein1, R Fünfstück

  • 1Klinik für Innere Medizin IV, Funktionsbereich Nephrologie, Friedrich-Schiller-Universität Jena. stein@polkim.med.uni-jena.de

Medizinische Klinik (Munich, Germany : 1983)
|May 16, 2000
PubMed
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Asymptomatic bacteriuria, bacteria in urine without symptoms, is common, especially in older women. Treatment is recommended during pregnancy, after transplants, and before urological procedures.

Area of Science:

  • Urology
  • Microbiology
  • Infectious Diseases

Background:

  • Asymptomatic bacteriuria (ASB) is the presence of bacteria in urine without symptoms.
  • Prevalence increases with age, particularly in women, and is linked to Escherichia coli.
  • ASB is common in specific populations like pregnant women, transplant recipients, and those with diabetes.

Purpose of the Study:

  • To define asymptomatic bacteriuria and discuss its prevalence.
  • To explore the risks and outcomes associated with ASB in various populations.
  • To provide treatment recommendations for ASB in specific clinical scenarios.

Main Methods:

  • Literature review and synthesis of existing data on ASB prevalence and management.
  • Analysis of diagnostic criteria for ASB (>100,000 CFU/ml in midstream urine).

Related Experiment Videos

  • Examination of ASB's impact on renal function, pregnancy, and specific patient groups.

    • Main Results:

    • ASB prevalence ranges from 2.7% in young women to 50% in elderly women and 6-20% in elderly men.
    • Escherichia coli is the most common pathogen, differing from those in symptomatic UTIs.
    • ASB generally does not cause renal damage in healthy individuals but is linked to low birth weight in pregnancy.

    Conclusions:

    • ASB per se does not lead to renal scarring or dysfunction in the absence of urinary tract abnormalities.
    • Treatment is advised during pregnancy, post-renal transplantation, before urological interventions, and for recurrent symptomatic UTIs.
    • Renal functional prognosis is excellent for uncomplicated ASB, emphasizing targeted treatment rather than universal screening.