Neutrophil-lymphocyte ratio as inflammatory marker for clinical prediction and disease severity evaluation of preeclampsia

Abstract

Background: Pre-eclampsia (PE) is a multisystem disorder that complicates 4-6% of pregnancies and constitutes a major source of morbidity and mortality worldwide. About 10-15% of maternal deaths are directly associated with PE and eclampsia. The aim of this study is to compare the neutrophil-lymphocyte ratio (NLR) values of mild and severe PE with the healthy normotensive pregnant women, in order to study the predictive role of NLR for PE and whether the NLR value has significant difference between normotensive pregnancy, severe and mild PE. Method: A cross-sectional study conducted from January to July 2022 after proper informed consent and ethical clearance. The study population included 194 pregnant women divided into three groups (97 normotensive, 55 mild PE, 42 with severe PE). All the study participants were statistically compared in respect to NLR and the baseline data including age, parity and gestational age. Results: Maternal NLR in mild PE group was statistically increased when compared to normotensive healthy women (p<0.05). Similarly, NLR was significantly higher in severe PE group when compared with normotensive pregnancy group (p=0.00). A statistically significant positive correlation was also seen between SBP (systolic blood pressure) and NLR in PE group (p<0.05). Conclusions: NLR can be used as an inflammatory marker for clinical prediction and disease severity evaluation of PE but further cohort studies are required to determine and establish its role.