This text is missing some spaces, please add them: Increasedportalflowoccurswhentheportalveinsattachtoarteries,astheydoinanarteriovenousfistula(whereanewpassageisformedbetweenaveinandanartery),oritcanoccurasaresultofbloodbeingdiverted(shunted)fromthearteriestotheliver.
Increased portal flow occurs when the portal veins attach to arteries, as they do in an arteriovenous fistula (where a new passage is formed between a vein and an artery), or it can occur as a result of blood being diverted (shunted) from the arteries to the liver.