The Validity of the Rapidly Diagnostic Tests for Early Detection of Urinary Tract Infection

Abstract

Urinary tract infectious (UTI) is the most common of all bacterial infections; the purpose of the present study was to determine the validity of rapidly diagnostic tests for the early detection of UTIs in patients. 128 patients who had UTIs and control group consisted of 128 subjects who had not UTIs were included to the study. Urine specimens obtained from the patients were evaluated for possible UTI by Gram staining, microscopic pyuria, dipstick (nitrite and leukocyte esterase), and quantitative urine culture. Using the quantitative urine culture as the gold standard (reference test), the sensitivity, specificity, and positive (PPV) and negative predictive values (NPV) of all the screening tests were determined and compared. The sensitivity, specificity, PPV, and NPV for the four screening methods were calculated against the urine culture (reference method) for the diagnosis of UTI. In conclusion, validity of Gram stain was found higher compared to other rapid diagnostic tests

Keywords

• Urinary tract infection,Gram stain,screening tests

Üriner Sistem Enfeksiyonlarının Erken Saptanmasında Hızlı Tanı Testlerinin Değeri

Abstract

Üriner sistem enfeksiyonları (ÜSİ) tüm bakteriyel enfeksiyonların en sık nedenidir; sunulan bu çalışmanın amacı üriner sistem enfeksiyonlarının erken saptanmasında hızlı tanı testlerinin değerinin belirlenmesidir. ÜSİ olan 128 hasta ve kontrol grubu olarak 128 sağlıklı kişi çalışmaya dahil edildi. Hastalardan elde edilen idrar örnekleri Gram boyama, mikroskopik piyüri, dipstik (nitrit ve lökosit esteraz) ve kantitatif idrar kültürü ile olası ÜSİ yönünden değerlendirildi. Tüm tarama testlerinin duyarlılığı, özgüllüğü, pozitif (PPV) ve negatif kestirim değerleri (NPV) altın standart olarak idrar kültürleri kullanılarak belirlendi ve karşılaştırmalar yapıldı. Bu dört tarama metodu için duyarlılık, özgüllük, PPV ve NPV değerleri idrar kültür sonuçlarına (referans yöntem) göre hesaplandı. Sonuç olarak, Gram boyama diğer hızlı tanı yöntemleri ile karşılaştırıldığında daha değerli bulundu

Keywords

• Üriner system enfeksiyonu,Gram boyama,tarama testleri

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