We conducted a prospective randomized trial of propranolol for the prevention of recurrent variceal bleeding in 48 patients with cirrhosis of the liver. During a follow-up period of up to 21 months, 12 of 26 patients in the propranolol group and 11 of 22 in the control group had rebleeding from esophageal varices. There was no significant difference in rebleeding between the two groups. This contrasts with a previous report of the efficacy of propranolol in preventing recurrent gastrointestinal bleeding in alcoholic cirrhosis. The difference in results may be due to the inclusion in our study of patients with other causes of cirrhosis and more severe liver disease. Propranolol may not be indicated for the prophylaxis of variceal rebleeding in such patients, and we advocate that its use be limited at present to controlled clinical trials.

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A previous randomized controlled study has shown a 30% rate of HBe antigen/antibody seroconversion within 1 year of a month course of adenine arabinoside-5'-monophosphate; no seroconversion occurred in the control group. In this study of patients derived from the same population, 45 hepatitis B virus carriers with chronic liver disease were randomized to receive either a short (4-week) course of adenine arabinoside-5'-monophosphate, a long (7 to 8-week) course of adenine arabinoside-5'-monophosphate or a 12-week course of lymphoblastoid interferon. Long-lasting suppression of hepatitis B virus replication with disappearance of serum hepatitis B virus DNA and clearance of HBeAg occurred within 12 months of treatment in four patients who received the short course of adenine arabinoside-5'-monophosphate and in five who received interferon. Of the nine responders, four also lost HBsAg. A response to antiviral therapy was accompanied by clinical and biochemical evidence of improvement in liver disease. None of the patients who received a long course of adenine arabinoside-5'-monophosphate responded. Peripheral neuropathy and myalgia were the most serious adverse effect affecting three recipients of the short course of adenine arabinoside-5'-monophosphate and eight recipients of the long course. Thrice weekly administration of interferon was well-tolerated. Further studies to identify the characteristics of the "responder patients" and large-scale controlled trials of antiviral therapy in these subgroups are indicated.

Precipitation of hepatic encephalopathy by propranolol in cirrhosis Continuous oral propranolol reduces portal venous pressure in patients with cirrhosis.' A controlled trial in such patients who had bled from varices showed a significantly lower incidence of rebleeding in those given propranolol.2 This led to the widespread and enthusiastic use of propranolol to prevent recurrent variceal haemorrhage in patients with cirrhosis. The beneficial effect of propranolol, however, has so far been demonstrated only in predominantly alcoholic