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BACKGROUND Inappropriate use of antibiotics results in antimicrobial resistance and dysbacteriosis. Among critically ill cirrhotic patients, consensus regarding the most optimal prescription strategy for antibiotics use has not been achieved. For these patients, the score for end-stage liver disease (MELD) demonstrated its value in predicting prognosis of cirrhosis. This study investigated use of the MELD score to guide antibiotics choice. MATERIAL AND METHODS We enrolled 1250 patients with cirrhosis. We collected patient information, including antibiotics administration. Linear regression analyses were performed to determine independent predictors of antibiotic administration. Survival curves were constructed based on Cox regression models. Cox proportional hazard models were used to calculate the hazard ratio, shown by forest plots. RESULTS The population was equally stratified into 4 groups based on the MELD score (Q1: MELD &lt;10; Q2: 10≤ MELD &lt;17; Q3: 17≤ MELD &lt;26; Q4: 26≤ MELD). In Q1, all the HR (hazard ratio) related to the duration of antibiotics use demonstrated no statistical significance. In Q2, the HR related to the duration of antibiotics use revealed a successive decrease. In Q3, the HR showed statistical significance only with a duration of antibiotics use of 7 days or more. In Q4, all the HR were statistically significant. As for categories of antibiotics use, whatever the MELD score was, the HR continued to increase with ascending categories. CONCLUSIONS For low MELD score patients (MELD &lt;17), changing the duration of antibiotics use was not associated with a better prognosis. For high MELD score patients (MELD ≥17), longer duration of antibiotics use was associated with a reduction in mortality. Whatever the MELD score was, an increase of number of antibiotic categories was positively associat ed with poor prognosis.

A Novel Use of Model for End-Stage Liver Disease (MELD) Score in Guiding Therapeutic Antibiotics Choice for Critically Ill Cirrhotic Patients