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Clinical and Experimental Obstetrics & Gynecology  2021, Vol. 48 Issue (4): 828-834    DOI: 10.31083/j.ceog4804132
Original Research Previous articles | Next articles
Can venous cord blood neutrophil to lymphocyte ratio and platelet to lymphocyte ratio predict early-onset sepsis in preterm infants?
Shu-Jun Chen1, †, Xie-Xia Zheng2, †, Hong-Xing Jin1, Jian-Hua Chen1, Ting-Feng He1, Cui-E Chen1, *()
1Department of Pediatrics, Yiwu Maternity and Children Hospital, 322000 Jinhua, Zhejiang, China
2Department of Clinical Laboratory, Yiwu Maternity and Children Hospital, 322000 Jinhua, Zhejiang, China
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Abstract  
Background: To explore the predictive value of venous cord blood neutrophil-to-lymphocyte ratio (NLR) and platelet to lymphocyte ratio (PLR) for Early-onset sepsis (EOS) in preterm infants. Methods: A prospective cohort of neonates with gestational ages <32 weeks in a single hospital from January 2017 to January 2020 were enrolled. Multivariable logistic regression was used to determine independent risk factors for EOS. ROC curves were created to estimate the predictive capacity. Results: A total of 427 neonates were included in the study. 176 neonates were exposed to chorioamnionitis including 89 EOS and 87 without EOS, and the venous cord blood white blood cell (WBC), (neutrophil) N, (platelet) P, NLR and PLR in the EOS infants were significantly increased. 251 infants were unexposed to chorioamnionitis including 63 EOS and 188 without EOS, and N and NLR were significantly increased in EOS infants. After adjustment for covariates, multivariable logistic regression analysis demonstrated high NLR was independently associated with the subsequent risk of EOS in the infants both exposed and unexposed to chorioamnionitis. The most accurate discriminatory NLR for EOS threshold in infants exposed to chorioamnionitis was 2.68 (AUC = 0.949, sensitivity = 0.839, specificity = 0.933). The most accurate discriminatory NLR for EOS threshold in infants unexposed to chorioamnionitis was 2.01 (AUC = 0.852, sensitivity = 0.830, specificity = 0.762). The cutoff value of the PLR for predicting EOS in the preterm infants exposed to chorioamnionitis was 55.051, the sensitivity was 82%, the specificity was 36.7%, and the AUC was 0.579. Conclusions: Venous cord blood NLR seems to be an early, sensitive and convenient marker for preterm infants with EOS, especially in those exposed to chorioamnionitis. Meanwhile, venous cord blood PLR is not an accurate predictor of EOS in preterm infants.
Key words:  Venous cord blood      Early-onset sepsis      Preterm infants      Chorioamnionitis      Neutrophil to lymphocyte ratio      Platelet to lymphocyte ratio     
Submitted:  13 October 2020      Revised:  12 November 2020      Accepted:  27 November 2020      Published:  15 August 2021     
*Corresponding Author(s):  Cui-E Chen     E-mail:  chencuie123456@163.com
About author:  These authors contributed equally.

Cite this article: 

Shu-Jun Chen, Xie-Xia Zheng, Hong-Xing Jin, Jian-Hua Chen, Ting-Feng He, Cui-E Chen. Can venous cord blood neutrophil to lymphocyte ratio and platelet to lymphocyte ratio predict early-onset sepsis in preterm infants?. Clinical and Experimental Obstetrics & Gynecology, 2021, 48(4): 828-834.

URL: 

https://ceog.imrpress.com/EN/10.31083/j.ceog4804132     OR     https://ceog.imrpress.com/EN/Y2021/V48/I4/828

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