Measurement of Azygos Blood Flow

  • Jaime Bosch
  • Faust Feu
  • Joan-Carles García-Pagán


Esophageal varices, because of their tendency to cause massive gastrointestinal hemorrhage, represent the more significant part of the portosystemic collateral circulation that develops in response to a chronic increase in portal pressure [1]. In recent years, much interest has been paid to the development of objective techniques allowing the quantification of hemodynamic abnormalities at the varices [2–4]. This has been mainly due to the recognition that, contrary to measurements of portal pressure, the endoscopic assessment of the size and appearance of the varices bear a good correlation with the likelihood of variceal hemorrhage [5–7]. This suggests that direct hemodynamic measurements at the varices may shed more light on the pathophysiology of bleeding and allow a better evaluation of new therapeutic approaches for portal hypertension [1,2,8,9].


Portal Hypertension Esophageal Varix Azygos Vein Hepatic Venous Pressure Gradient Distal Splenorenal Shunt 
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Copyright information

© Springer Japan 1991

Authors and Affiliations

  • Jaime Bosch
  • Faust Feu
  • Joan-Carles García-Pagán
    • 1
  1. 1.Hepatic Haemodynamics Laboratory, Liver Unit, Hospital Clínic i ProvincialUniversity of BarcelonaBarcelonaSpain

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