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Sarcopenia predicts minimal hepatic encephalopathy in patients with liver cirrhosis.

AIM: Minimal hepatic encephalopathy (MHE) and sarcopenia impair the health-related quality of life and prognosis of patients with liver cirrhosis; however, the relationship between MHE and sarcopenia remains unclear. The aim of this study was to investigate their relationship and to identify the predictors of MHE in cirrhotic patients.

METHODS: This retrospective study evaluated 120 cirrhotic patients who were tested for MHE and sarcopenia. Minimal hepatic encephalopathy was diagnosed by using the computer-aided neuropsychiatric test. Sarcopenia was diagnosed based on the assessment criteria recommended by the Japan Society of Hepatology. Muscle mass and muscle strength were measured by using bio-impedance analysis and digital grip strength dynamometer. Univariate and multivariate logistic regression analyses were carried out to identify the predictors of MHE.

RESULTS: Of the 120 cirrhotic patients, 28 (23%) and 32 (27%) were diagnosed with MHE and sarcopenia, respectively. The prevalence of MHE was higher in patients with sarcopenia than in those without sarcopenia (P = 0.01). By the univariate analysis, MHE was significantly complicated with sarcopenia (P < 0.01). In the multivariate analysis, sarcopenia (odds ratio = 3.31, 95% confidence interval = 1.19-9.42; P = 0.02) and serum branched-chain amino acids levels <327 nmol/mL (odds ratio = 2.98, 95% confidence interval = 1.08-8.34; P = 0.03) were found to be associated with MHE.

CONCLUSIONS: Sarcopenia and serum branched-chain amino acids levels were predictors of MHE. The amelioration of sarcopenia and/or amino acids imbalance may improve MHE in patients with liver cirrhosis.

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