title: Functional hepatic flow and Doppler-assessed total hepatic flow in control subjects and in patients with cirrhosis.
abstract: Functional hepatic flow and total hepatic flow were determined by non-invasive techniques in 32 patients with cirrhosis and in 32 paired control subjects. Functional hepatic flow was measured by the hepatic clearance of D-sorbitol, while total hepatic flow was determined by pulsed echo-Doppler, as the sum of portal and hepatic arterial blood flow. Functional hepatic flow was significantly reduced in patients with cirrhosis (927 +/- 314 vs. 1287 +/- 315; p < 0.0001), while total hepatic flow was slightly increased (1511 +/- 540 vs. 1261 +/- 321 in controls; p = 0.028). In control subjects functional hepatic flow significantly correlated with total hepatic flow (r = 0.823; p < 0.001), while no correlation was observed in cirrhosis. Functional hepatic flow and the difference between total hepatic flow and functional hepatic flow significantly correlated with the Child-Pugh score in patients with cirrhosis. The data obtained in control subjects support the measurement of functional hepatic flow and total hepatic flow by non-invasive techniques. The finding that in cirrhosis functional hepatic flow is significantly decreased, while Doppler-assessed total hepatic flow is preserved or even increased, confirms that a relevant part of blood flowing through the liver is diverted by intrahepatic shunts. The simultaneous assessment of these two parameters by non-invasive techniques may be proposed as a reliable tool for the study of functional shunting of cirrhosis.
mesh_terms: D000328:Adult; D000368:Aged; D004234:Diuretics, Osmotic; D005260:Female; D006801:Humans; D008102:Liver Circulation / Q000502:physiology*; D008103:Liver Cirrhosis / Q000000981:diagnostic imaging / Q000503:physiopathology*; D008297:Male; D008875:Middle Aged; D013012:Sorbitol; D018608:Ultrasonography, Doppler
chemical_list: D004234:Diuretics, Osmotic; D013012:Sorbitol