Introduction of portal Hypertension As early as the 17th century, it was realized that structural changes in the portal circulation could cause gastrointestinal bleeding In 1902 gilbert and carnot introduced the term portal hypertension"to describe this condition Then, What's Portal Hypertension?• As early as the 17th century, it was realized that structural changes in the portal circulation could cause gastrointestinal bleeding. • In 1902, Gilbert and Carnot introduced the term "portal hypertension" to describe this condition. Introduction of Portal Hypertension Then, What's Portal Hypertension?