Fluid retention in cirrhosis: pathophysiology and management

QJM : Monthly Journal of the Association of Physicians
A KashaniL Rossaro

Abstract

Accumulation of fluid as ascites is the most common complication of cirrhosis. This is occurring in about 50% of patients within 10 years of the diagnosis of cirrhosis. It is a prognostic sign with 1-year and 5-year survival of 85% and 56%, respectively. The most acceptable theory for ascites formation is peripheral arterial vasodilation leading to underfilling of circulatory volume. This triggers the baroreceptor-mediated activation of renin-angiotensin-aldosterone system, sympathetic nervous system and nonosmotic release of vasopressin to restore circulatory integrity. The result is an avid sodium and water retention, identified as a preascitic state. This condition will evolve in overt fluid retention and ascites, as the liver disease progresses. Once ascites is present, most therapeutic modalities are directed on maintaining negative sodium balance, including salt restriction, bed rest and diuretics. Paracentesis and albumin infusion is applied to tense ascites. Transjugular intrahepatic portosystemic shunt is considered for refractory ascites. With worsening of liver disease, fluid retention is associated with other complications; such as spontaneous bacterial peritonitis. This is a primary infection of ascitic fluid cause...Continue Reading

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