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[Phentolamine in cases of liver cirrhosis with bleeding from esophageal variceal rupture].

The aim of this study is at establishing cirrhotic portal hypertension with common bile duct ligation in 9 mongrel dogs to measure the plasma catecholamine level. On the basis of experimental study, phentolamine, the alpha-adrenoceptor antagonist, was used to treat 14 patients with liver cirrhosis complicating bleeding from esophageal variceal rupture. The results had been shown that the levels of noradrenaline (NE) in both portal and inferior caval vein were increased more significantly in the cirrhotic stage than in the precirrhotic stage. The mechanism of the NE elevation might be due to increased release from enhancement of sympathetic nervous activity. Our clinical data have also been demonstrated that the effect of phentolamine on the 12 cases of variceal hemorrhage is markedly efficacious with no longer bleeding. Only 2 patients had showed no good reaction neither to phentolamine nor to pituiterin, eventually died of liver failure. It is conceivable that phentolamine has the same efficacy in treatment of esophageal variceal bleeding as pituitrin. But less side effect than the latter.