Decreased albumin to INR ratio is a prognostic marker of 30-day mortality in neonatal sepsis: a retrospective study

Introduction: Neonatal sepsis is a leading cause of neonatal mortality. This study aims to assess the clinical significance of the serum albumin (ALB) to international normalized ratio (INR) ratio (AIR) as a predictor for 30-day mortality in neonates with sepsis. Methodology: Neonates diagnosed with sepsis between January 2019 and December 2022 were included. Admission data were collected, enabling the categorization of neonates into survival and non-survival groups. Logistic regression analyses and receiver operating characteristic (ROC) curves, were employed. Results: A total of 195 neonates with sepsis were analyzed. The non-survival group exhibited significantly lower AIR compared to the survival group. Multivariate analysis identified low AIR as an independent risk factor (hazard ratio [HR]: 9.091, p < 0.001), achieving an area under the curve (AUC) of 0.746 for AIR. The sensitivity and specificity of AIR were 79.31% and 66.87%, respectively. Conclusions: AIR serves as a cost-effective and easily obtainable marker in neonatal sepsis research. It emerges as an independent predictor of adverse outcomes in neonatal sepsis, demonstrating good predictive capabilities.