Portal Hypertension and Related Complications: Diagnosis and Management
https://www.mayoclinicproceedings.org/article/S0025-6196(18)31008-5/fulltext
WebApr 1, 2019 · 1. Direct portal pressure measurement, however, is invasive and requires direct cannulation of portal or umbilical veins. Alternatively, portal hypertension can be accurately diagnosed by the pressure gradient between the portal vein and the inferior vena cava, defined as the hepatic venous pressure gradient (HVPG).
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