Evaluation of a Novel Light Scattering Methodology for the Detection of Pathogenic Bacteria in Urine
| العنوان: | Evaluation of a Novel Light Scattering Methodology for the Detection of Pathogenic Bacteria in Urine |
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| المؤلفون: | T. Scott Isbell, Andrew P Tomaras, Robin R. Chamberland, Elizabeth Davaro |
| المصدر: | The Journal of Applied Laboratory Medicine. 5:370-376 |
| بيانات النشر: | Oxford University Press (OUP), 2020. |
| سنة النشر: | 2020 |
| مصطلحات موضوعية: | Adult, 0301 basic medicine, medicine.medical_specialty, Bacteriuria, Urinalysis, Urinary system, 030106 microbiology, Urology, Tocopherols, Urine, medicine.disease_cause, Sensitivity and Specificity, 03 medical and health sciences, 0302 clinical medicine, Humans, Scattering, Radiation, Medicine, 030212 general & internal medicine, Antibiotic use, medicine.diagnostic_test, business.industry, Reproducibility of Results, Pathogenic bacteria, General Medicine, Gold standard (test), medicine.disease, Antimicrobial, Urinary Tract Infections, business |
| الوصف: | Background Urine culture, the gold standard for detecting and identifying bacteria in urine, is one of the highest volume tests in many microbiology laboratories. The inability to accurately predict which patients would benefit from culture leads not only to monopolization of laboratory resources, but also to unnecessary antimicrobial exposure as patients receive empirical treatment for suspected or presumed urinary tract infections (UTI) while awaiting culture results. A common approach to decrease unnecessary urine culture is screening samples using urinalysis (UA) parameters to determine those that should proceed to culture (reflex). In this study, we compared the performance of a novel uropathogen detection method to urinalysis for purposes of UTI screening. Methods Urine specimens submitted for culture (n = 194) were evaluated by urinalysis and a novel light scattering device (BacterioScan 216Dx UTI System) capable of detecting the presence of bacteria in urine. Sensitivity and specificity for prediction of a positive urine culture by UA and 216Dx were determined relative to urine culture results. A positive urine culture was defined as growth in culture of one or two uropathogens at concentrations of ≥50,000 CFU/mL. Results 194 urine samples were evaluated by UA, 216Dx, and urine culture. The 216Dx demonstrated a 100% [95%CI: 88.43%–100.0%] sensitivity and 81.71% [95%CI: 74.93%–87.30%] specificity for the detection of bacteriuria, vs UA with a sensitivity of 86.67% [95%CI 69.28%–96.24%] and specificity of 71.95% [95%CI: 64.41%–78.68%] when compared to urine culture (diagnostic reference method). Conclusions BacterioScan allows for an alternative method of screening with satisfactory sensitivity and improved specificity that may facilitate a reduction of unnecessary cultures. Additional studies are required to determine if a concomitant decrease in inappropriate antibiotic use can be realized with the 216Dx technology. |
| تدمد: | 2475-7241 2576-9456 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::31f3f03a4b6e454ad962fb0e0af6c318 https://doi.org/10.1093/jalm/jfz013 |
| حقوق: | OPEN |
| رقم الأكسشن: | edsair.doi.dedup.....31f3f03a4b6e454ad962fb0e0af6c318 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 24757241 25769456 |
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