Liver dysfunction is a severe consequence of heart failure due to hepatic congestion
. Passive hepatic congestion
due to increased central venous pressure (CVP) in patients with right heart failure may cause elevations of both direct and indirect serum bilirubin and gamma-glutamyl transpeptidase (GGT).[sup],,, Indeed, serum levels of transaminase, GGT, and bilirubin have been indicated as prognostic markers for decompensated heart failure.[sup],, However, to the best of our knowledge, few studies have evaluated the potential role of liver function markers (such as serum levels of transaminase, bilirubin, and GGT) in the prediction of prognosis in patients with inoperable CTEPH.