Neutrophil-to-Lymphocyte and Platelet-to-Lymphocyte Ratios Are Correlated with Complicated Diverticulitis and Hinchey Classification: A Simple Tool to Assess Disease Severity in the Emergency Department

Background and Aim. Rapid identification of patients with complications related to acute diverticulitis who require urgent intervention in the emergency department (ED) is essential. &e aim of our study was to determine the role of neutrophil-tolymphocyte ratio (NLR) and platelet-to-lymphocyte ratio (PLR) in predicting severity of diverticulitis as assessed by Hinchey classification. Patients and Methods. We performed a single retrospective study in EMMS Nazareth Hospital from 4/2014 to 4/ 2018. Patients were categorized into two groups: group A with mild to moderate complicated diverticulitis (Hinchey 1-2) and group B with severe complicated diverticulitis (Hinchey 3-4). Results. Two hundred twenty-five patients were included. Two hundred seven patients were in group A, and 18 patients were in group B. On univariate analysis, age, NLR, and PLR correlated with advanced Hinchey classification and disease severity (stages 3-4) (OR 1.038, 95% CI 1.001–1.076, P � 0.0416; o‎r 1.192, 95% CI 1.093–1.300, P < 0.0001; and o‎r 1.011, 95% CI 1.005–1.017, P � 0.0005, respectively). On multivariate logistic regression analysis, the NLR and PLR remain significantly correlated with Hinchey 3-4 (OR 1.174, 95% CI 1.071–1.286, P � 0.0006, and o‎r 1.008, 95% CI 1.001–1.015, P � 0.0209, respectively). &e area under the curve (AUC) for the NLR and PLR on univariate analysis was 0.7526 and 0.6748, respectively, and 0.7760 and 0.7391 on multivariate logistic regression analysis, respectively, and receiveroperating characteristic (ROC) curves were drawn. Conclusion. &e NLR and PLR independently associated with diverticulitis severity and positively correlated with advanced Hinchey classification. &is simple available laboratory tool can be implemented into clinical practice to optimize patient management.