Carvedilol as the new non-selective beta-blocker of choice in patients with cirrhosis and portal hypertension.

Abstract

Portal hypertension (PH) is the most common complication ofcirrhosis and represents the main driver of hepatic decompensation. The overarching goal of PH treatments in patients with compensated cirrhosis is to reduce the risk of hepatic decompensation (i.e development of ascites, variceal bleeding and/or hepatic encephalopathy). In decompensated patients, PH-directed therapies aim at avoiding further decompensation (i.e. recurrent/refractory ascites, variceal rebleeding, recurrent encephalopathy, spontaneous bacterial peritonitis or hepatorenal syndrome) and at improving survival. Carvedilol is a non-selective beta-blocker (NSBB) acting on hyperdynamic circulation/splanchnic vasodilation and on intrahepatic resistance. It has shown superior efficacy than traditional NSBBs in lowering PH in patients with cirrhosis and may be, therefore, the NSBB of choice for the treatment of clinically significant portal hypertension. In primary prophylaxis of variceal bleeding, carvedilol has been demonstrated to be more effective than endoscopic variceal ligation (EVL). In patients with compensated cirrhosis carvedilol achieves higher rate of hemodynamic response than propranolol, resulting in a decreased risk of hepatic decompensation. In secondary prophylaxis, the combination of EVL with carvedilol may prevent rebleeding and non-bleeding further decompensation better than that with propranolol. In patients with ascites and gastroesophageal varices, carvedilol is safe and may improve survival, as long as no impairment of the systemic hemodynamic or renal dysfunction occurs, with maintained arterial blood pressure as suitable safety surrogate. The target dose of carvedilol to treat PH should be 12.5mg/day. This review summarizes the evidence behind Baveno-VII recommendations on the use of carvedilol in patients with cirrhosis.