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ISSN 1001-5256 (Print)
ISSN 2097-3497 (Online)
CN 22-1108/R
Volume 40 Issue 10
Oct.  2024
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Article Contents

Risk factors for the prognosis of elderly patients with hepatitis B virus-related acute-on-chronic liver failure and construction of a nomogram model for risk prediction

DOI: 10.12449/JCH241009
Research funding:

The Science Foundations of Health Commission of Sichuan Provincial (20PJ180)

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  • Corresponding author: TANG Shanhong, tangshanhong@swjtu.edu.cn (ORCID: 0000-0001-6652-2942)
  • Received Date: 2024-01-19
  • Accepted Date: 2024-02-18
  • Published Date: 2024-10-25
  •   Objective  To investigate the clinical features of elderly patients with hepatitis B virus-related acute-on-chronic liver failure (HBV-ACLF) and the risk factors affecting the short-term prognosis of patients.  Methods  A retrospective analysis was performed for 417 patients with HBV-ACLF who were admitted to The General Hospital of Western Theater Command from January 2015 to January 2023, and related clinical data were collected, including general status, routine blood test results, biochemical parameters, and conditions of liver cirrhosis and decompensated events (ascites, hepatic encephalopathy, and their severities). The patients were followed up to observe 90-day survival. According to the age, the patients were divided into elderly group (with 106 patients aged ≥60 years) and non-elderly group (with 311 patients aged<60 years), and according to the 90-day survival, the elderly group were further divided into survival group with 41 patients and death/transplantation group with 65 patients. The independent-samples t test or the Mann-Whitney U test was used for comparison of quantitative data between two groups, and the chi-square test was used for comparison of qualitative data between two groups. The binary logistic regression analysis was used to determine the independent influencing factors for the risk of death within 90 days in elderly patients with HBV-ACLF, and a nomogram model was constructed for predicting the risk of death. The receiver operating characteristic (ROC) curve was used to investigate the value of the model in predicting the prognosis of HBV-ACLF patients in both the training set and the validation set. Calibration curve and decision curve were plotted for the models constructed in the training set and the validation set, and the model was assessed in terms of the degree of fitness and predicting benefits.  Results  The elderly patients had a significantly higher 90-day mortality rate than the non-elderly patients (P<0.05), and compared with the non-elderly group, the elderly group had significantly higher incidence rate in female individuals, basic incidence rate of liver cirrhosis, incidence rate and grade of hepatic encephalopathy, incidence rate of ascites, and liver fibrosis markers (aspartate aminotransferase-to-platelet ratio index and fibrosis-4) (all P<0.05), as well as significantly lower total cholesterol, high-density lipoprotein, albumin, alpha-fetoprotein, and lymphocytes (all P<0.05). As for the elderly patients with HBV-ACLF, there were significant differences between the survival group and the death/transplantation group in total cholesterol, total bilirubin, international normalized ratio (INR), alpha-fetoprotein, platelet, creatinine, serum sodium, monocytes, and the incidence rate and grade of hepatic encephalopathy (all P<0.05). In addition, the multivariate logistic regression analysis showed that INR (odds ratio [OR]=11.351, 95% confidence interval [CI]: 1.942‍ ‍—‍ ‍66.362, P<0.05), monocyte count (OR=23.636, 95%CI: 1.388‍ ‍—‍ ‍402.529, P<0.05), total bilirubin (OR=1.007, 95%CI: 1.001‍ ‍—‍ ‍1.013, P<0.05), and platelet count (OR=0.968, 95%CI: 0.945‍ ‍—‍ ‍0.993, P<0.05) were independent influencing factors for the 90-day prognosis of elderly patients with HBV-ACLF, and the nomogram model constructed based on these factors had a relatively high predictive value, with an area under the ROC curve of 0.915, a sensitivity of 88.0%, and a specificity of 86.7%. The nomogram model showed relatively high efficiency and degree of fitness in the verification set, and the decision curve suggested that the model had good benefits, with a higher prediction efficiency compared with the commonly used prediction models such as MELD score and COSSH-ACLF Ⅱ score.  Conclusion  Elderly HBV-ACLF patients may have a high short-term mortality rate due to the reductions in liver synthesis, reserve function, and regenerative ability and immune dysfunction. INR, monocyte count, total bilirubin, and platelet count have a relatively high value in predicting the risk of death in elderly HBV-ACLF patients, and the nomogram model constructed based on these factors has a relatively high prediction efficiency.

     

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