Disappointing dipstick screening for urinary tract infection in hospital inpatients.
AUTOR(ES)
Zaman, Z
RESUMO
AIM: To compare the performance of leucocyte esterase and nitrite dipstick tests with microscopic examination and culture of first morning urines (n = 420) of hospital inpatients. RESULTS: The sensitivity, specificity, and negative predictive value of the leucocyte esterase test for the cutoff of > 10 WBC/microliter were 57%, 94%, and 68%, respectively. For > 5 WBC per high power field (HPF) these variables were 84%, 90%, and 93%. For > 10(5) colony counts/ml, the sensitivity of the nitrite test was 27%, specificity 94%, and negative predictive value 87%. When either leucocyte esterase or nitrite positivity was accepted as a marker of urinary tract infection, the sensitivity was 78%, specificity 75%, and negative predictive value 94%, and there were 22% false negative results. Semiquantitative microscopic estimation of bacteria per HPF yielded 40% false positives. CONCLUSIONS: Leucocyte esterase and nitrite dipstick tests are not suitable for screening for urinary tract infections.
ACESSO AO ARTIGO
http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=500752Documentos Relacionados
- A review of routine tests for respiratory viruses in hospital inpatients.
- Factors related to the provision of hospital discounts for HMO inpatients.
- Low blood pressure in psychiatric inpatients.
- Evaluation of New Urinary Tract Infection Screening Devices
- Evaluation of a screening test for detecting urinary tract infection in newborns and infants.
