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Open Access Highly Accessed Research article

Does clinical examination aid in the diagnosis of urinary tract infections in women? A systematic review and meta-analysis

David Medina-Bombardó13* and Antoni Jover-Palmer2

Author Affiliations

1 Manacor Health Center. Majorca Primary Care Department. Balearic Institute of Health Manacor, Simó Tort s/n, 07500 Manacor, Balearic Islands, Spain

2 Arquitecte Bennasar Health Center, Majorca Primary Care Department. Balearic Institute of Health, Avda Gaspar Bennàzar 9, 07004 Palma, Balearic Islands, Spain

3 Unit of Reseach, Majorca Primary Care Department. Balearic Institute of Health, Reina Esclaramunda 9, 07003 Palma, Balearic Islands, Spain

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BMC Family Practice 2011, 12:111  doi:10.1186/1471-2296-12-111

Published: 10 October 2011

Abstract

Background

Clinicians should be aware of the diagnostic values of various symptoms, signs and antecedents. This information is particularly important in primary care settings, where sophisticated diagnostic approaches are not always feasible. The aim of the study is to determine the probability that various symptoms, signs, antecedents and tests predict urinary tract infection (UTI) in women.

Methods

We conducted a systematic search of the MEDLINE and EMBASE databases to identify articles published in all languages through until December 2008. We particularly focused on studies that examined the diagnostic accuracy of at least one symptom, sign or patient antecedent related to the urinary tract. We included studies where urine culture, a gold standard, was preformed by primary care providers on female subjects aged at least 14 years. A meta-analysis of the likelihood ratio was performed to assess variables related to the urinary tract symptoms.

Results

Of the 1, 212 articles identified, 11 met the selection criteria. Dysuria, urgency, nocturia, sexual activity and urgency with dysuria were weak predictors of urinary tract infection, whereas increases in vaginal discharge and suprapubic pain were weak predictors of the absence of infection. Nitrites or leukocytes in the dipstick test are the only findings that clearly favored a diagnosis of UTI.

Conclusions

Clinical findings do not aid in the diagnosis of UTI among women who present with urinary symptoms. Vaginal discharge is a weak indicator of the absence of infection. The urine dipstick test was the most reliable tool for detecting UTI.