Relationship Between Platelet to White Blood Cell Ratio and 30-Day Prognosis of Patients with Acute-on-Chronic Liver Failure

Background: Acute-on-chronic liver failure (ACLF) is always associated with thrombocytopenia or leukocytosis. Therefor the platelet to white blood cell ratio (PWR) in ACLF patients is always reduced. Objectives: Here, we assessed the relationship between PWR and prognosis in ACLF patients. Methods: A retrospective cohort of 415 patients, including 100 patients that were diagnosed of chronic hepatitis B, 104 patients suffered of HBV-related liver cirrhosis and 211 patients suffered of HBV-related ACLF, was investigated. Univariate and multivariate COX models were used to investigate the relationship between PWR and 30-day survival in patients with ACLF. Factors affecting PWR in ACLF patients were also analysed using logistic regression analysis. Results: At baseline, the platelet count in patients with HBV-related ACLF was significantly lower than that in patients with CHB and patients suffered of HBV-related cirrhosis. The PWR value was much higher in the survivors of ACLF than in ACLF patients who died. PWR, age, total bilirubine, prothrombin activity, and aspartate transaminase were independent predictors of the 30-day survival rate of ACLF patients. We also found that ascites and infection were independent factors related to the decrease of PWR in ACLF patients. Conclusions: The PWR value was significant declined in ACLF patients. And it was independent risk factors for the survival rate of those patients.