Quantitative Value of Bacteria Associated with Leukocytes in Differential Diagnosis of Lower Respiratory Tract Infection in Children, in Comparison to Sputum Culture and Procalcitonin

Author:

Zhang Guoqiang1,Yao Yihui1,Gao Ying1,Yu Xiaolu1,Fang Jiabin1

Affiliation:

1. Zhongshan Hospital, Medical College of Xiamen University , Xiamen , China

Abstract

Abstract Background The mortality and morbidity rates in children with lower respiratory tract infection (LRTI) remain high. Objective To describe the number of bacteria that is associated with leukocytes in differential diagnosis of bacterial, mycoplasma, and viral LRTI in children. Methods Sputum smears were Gram stained for counting single-morphology bacteria associated with leukocytes. The differential diagnostic values of bacterial number were assessed in children with LRTI. Results The area under the receiver operating characteristic (ROC) curve was 0.95 for bacterial number in the differential diagnosis of bacterial infection from mycoplasma and viral infections. The area under the ROC curve was 0.62 for procalcitonin and 0.94 for bacterial number in the differential diagnosis of bacterial infection from mycoplasma infection. Conclusion The number of bacteria associated with leukocytes in sputum was valuable and rapid in differential diagnosis of bacterial infection in children with suspected bacterial, mycoplasma, and viral LRTI.

Publisher

Oxford University Press (OUP)

Subject

Biochemistry (medical),Clinical Biochemistry

Reference19 articles.

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3. Procalcitonin in children admitted to hospital with community acquired pneumonia;Moulin;Arch Dis Child.,2001

4. Procalcitonin for diagnostics and treatment decisions in pediatric lower respiratory tract infections;Baumann;Front Pediatr.,2017

5. Procalcitonin to initiate or discontinue antibiotics in acute respiratory tract infections;Schuetz;Cochrane Database Syst Rev.,2017

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