Refers to a defect in arterial oxygenation induced by pulmonary vascular dilation associated with liver disease.
Three aspects of the disease include liver disease, pulmonary vascular dilation and an oxygenation defect.
Classification based on severity of oxygenation defect as it influences survival and timing of liver transplantation.
Vascular dilation includes pulmonary capillaries and less commonly pleural and pulmonary arteriovenous communications.