Evaluation of Hemodynamic Changes of Portal Veins in Patients with Liver Cirrhosis by Color Doppler

Objective To explore hemodynamic changes of liver portal veins in patients with liver cirrhosis. Methods Internal diameter(mm), cross section area(cm2) and blood flow velocity(cm/s) of the portal vein were detected by color doppler separately in 20 cases(control group), 22 cases with compensated liver cirrhosis(compensated group) and 8 cases decompensated liver cirrhosis(decompensated group).Results The internal diameter, cross section area and congestive index of liver portal vein increased, blood flow velocity and blood flow volume of liver portal vein decreased gradually from control group, compensated group to decompensated group, and there was significant difference among groups; The blood flow velocity and volume of spleen vein were higher than those of portal vein in the decompensated group with varices of esophagus and spleen, and difference was significant. Conclusion Color doppler is used to evaluate liver hemodynamics quantitatively as a convenient and non-invasive method in the diagnosis, development, treatment and prognosis of portal vein hypertension, by which some hemodynamics parameters of portal vein can be acquired, and the occurrence rate of varices of esophagus and the possibility of rupture and bleeding of varices in liver portal vein hypertension are predicted.