Serial Complete Blood Count-Derived Inflammatory Indices in Acute Pancreatitis: Temporal Associations with Disease Severity, Pancreatic Necrosis, and Prolonged Hospitalization—A Retrospective Single-Center Study

Background

Acute pancreatitis (AP) evolves during the first days of hospitalization, and the prognostic value of complete blood count (CBC)-derived inflammatory indices may depend on measurement timing. We evaluated serial neutrophil-to-lymphocyte ratio (NLR), platelet-to-lymphocyte ratio (PLR), and systemic immune-inflammation index (SII) values and their associations with disease severity, pancreatic necrosis, and prolonged hospitalization.