Abstract
Pediatric recurrent wheezing is a common disorder with potential asthma risk; however, its diagnosis much relies on physician's subjective evaluation. Hence, efficient noninvasive biomarkers are in great need. In this retrospective study, blood routine test was analyzed in 143 wheezing children and 137 control individuals, and various cell types were discriminated and counted. Total IgE in plasma was detected using enzyme-linked immunosorbent assay. Receiver operating characteristic curve was plotted and area under curve (AUC) was calculated to evaluate the clinical potential of both indexes for diagnosing pediatric recurrent wheezing. The theoretical cutoff values for both indexes were also calculated using a Youden index. The results showed that neutrophil significantly increased in wheezing children, whereas lymphocyte decreased sharply. Total IgE, neutrophil-lymphocyte ratio (NLR) and platelet-lymphocyte ratio (PLR) were significantly elevated in wheezing patients. Besides, NLR and PLR were found unchanged in different genders. The results showed that NLR (AUC = 0.647) and PLR (AUC = 0.628) were able to discriminate recurrent wheezing. Cutoff for NLR was 0.98 (Youden index 24.8%) and cutoff for PLR was 116.4 (Youden index 19.4%). The mentioned evidence supported NLR and PLR as potential diagnostic indexes for pediatric recurrent wheezing.
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