Can Inflammatory Indices be Used to Predict Adverse Pregnancy Outcomes in Pregnant Women with Recurrent Urinary Tract Infection?

Abstract

Aim: This study aimed to investigate the utility of inflammatory indices in predicting adverse maternal and neonatal outcomes in pregnant women with recurrent urinary tract infections. Material and Methods: This retrospective study was conducted on pregnant women treated for symptomatic urinary tract infection (UTI) between 2017 and 2021. Pregnant women with two or more episodes of symptomatic UTI were included in the study group. Pregnant women with one UTI were included in the control group. The study group consisted of 91 (46.9%) patients and the control group consisted of 103 (53.1%) patients. The groups were compared in terms of clinical characteristics, adverse outcomes, and inflammatory indices. Results: It was found that more adverse maternal and neonatal outcomes occurred in the study group compared to the control group (p=0.021, and p<0.001, respectively). The cut-off values for platelet-to-lymphocyte ratio (PLR), neutrophil-to-lymphocyte ratio (NLR), and systemic immune-inflammation index (SII) to predict adverse maternal outcomes were found 185.00 (p=0.015, area under the curve (AUC)=0.604, 95% confidence interval (CI)=0.558-0.782,), 4.34 (p=0.051, AUC=0.584, 95% CI=0.514-0.746), and 1210.48 (p=0.008, AUC=0.614, 95% CI=0.547-0.771), respectively. The cut-off values for PLR, NLR, and SII for predicting negative neonatal outcomes were found 192.98 (p=0.001, AUC=0.692, 95% CI=0.572-0.812), 4.67 (p=0.166, AUC=0.583, 95% CI=0.475-0.740), and 1339.47 (p=0.006, AUC=0.666, 95% CI=0.526-0.777), respectively. Conclusion: Although the success of discrimination is weak, PLR and SII may be useful to predict adverse maternal and neonatal outcomes in pregnant women with recurrent UTI.