The investigators wish to include prospectively 100 cirrhotic patients with ascites requiring prolonged hospitalization in the Hepato-gastroenterology departments of the Besançon, Nancy and Reims hospitals. The inclusion and follow-up periods will be six months each. At the inclusion of the patients we will evaluate the correlations between the plasma concentration of copeptin and 1 / the severity of cirrhosis (Child-Pugh and MELD scores) and serum sodium; 2 / systemic inflammation markers (CRP, leukocytes, IL-6 and lipopolysaccharides), 3 / calprotectin concentration in ascites. "