Role of Nutritional Intervention for the Treatment of Sarcopenia in Cirrhotic Patients with Refractory Ascites Candidate to Transjugular Intrahepatic Portosystemic Shunt Placement and Identification of Prognostic Factors Related to Clinical Outcome

Inclusion Criteria: * men and women with an age ≥ 18 and ≤ 80 years * clinical, radiological or histological diagnosis of liver cirrhosis * diagnosis of RA * confirmation of sarcopenia defined in CT scan as the sum of the psoas muscle areas measured at the level of the 3rd lumbar vertebra (PMA) ≤16 cm2 * informed consent signed Exclusion Criteria: * severe hepatic insufficiency (bilirubin\> 5 mg/dl, MELD score\> 18, Child-Pugh score\> 9) * Congestive heart failure class ≥2 according to New York Heart Association criteria (NYHA) * Active coronary heart disease (myocardial infarction within 6 months of the study) * Severe pulmonary hypertension suspected on echocardiogram (systolic pulmonary arterial pressure \[PAPs\]\> 35 mmHg) and confirmed with right cardiac catheterization (PAPs\> 45mmHg) * Chronic renal failure (creatinine\> 3 mg/dl) * Performance status ≥2 according to the Eastern Cooperative Oncology Group scale (ECOG) * History of grade III-IV hepatic encephalopathy or West Haven grade I-II hepatic encephalopathy episodes within the last 3 months * Uncontrolled systemic sepsis * Presence of Hepatocellular carcinoma * Complete portal vein thrombosis * Active bleeding from gastroesophageal varices. Patients with adequately treated gastroesophageal varices can be included in the study (banding ligation, sclerotherapy) * Diagnosis of extra hepatic neoplasia * Transplant recipients * Patients unable or unwilling to comply with the protocol requirements * Pregnant or lactating women * Patients unable to autonomously express their consent (incapable patients) * any other laboratory condition or result that in the opinion of the Principal Investigator, preclude the subject's participation in the study