Effect of cimetidine on portal pressure and systemic hemodynamics in patients with and without liver cirrhosis

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Abstract
Portal pressure and systemic hemodynamics were evaluated for 30 minutes after intravenous injection of 400 mg of cimetidine in patients with and without liver cirrhosis when they were operated upon for varying surgical diseases. A transient fall of arterial pressure was seen in both groups of patients, but the change was statistically significant only in those with cirrhosis. Cimetidine did not substantially alter pulse rate, CVP, and portal pressure in both groups. The present results seem to indicate that rapid administration of cimetidine does not induce a fall of portal venous pressure in both cirrhotic and non-cirrhotic patients.