Evaluation of portal venous hypertension with cine phase-contrast MR flow measurements: high association of hyperdynamic portal flow with variceal hemorrhage
.Burkart DJ, Johnson CD, Ehman RL, Weaver AL, Ilstrup DM.: Radiology 1993 Sep;188(3):643-8
Thirty-two patients with
portal venous hypertension and endoscopically proved esophageal
varices who were being evaluated for possible liver transplantation
were studied with cine phase-contrast magnetic resonance (MR)
imaging. Flow measurements in the main portal vein were obtained
and associated with the presence of variceal hemorrhage within
2 years before the MR examination. Low (hypodynamic) flow was
present in 22 patients, while high (hyperdynamic) flow was present
in 10 patients. The presence of variceal hemorrhage was significantly
associated with a high portal venous flow rate (P = .001), high
variceal grade (P = .030), and Child class A or B (P = .003);
however, only portal venous flow (P = .006) and variceal grade
(P = .044) were found to be associated with variceal hemorrhage
in a multiple logistic regression analysis. The portal venous
flow rate was significantly higher among patients with Child class
A or B disease compared with those with class C disease (median,
24.6 vs 8.0 mL/min.kg; P = .004).
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