Differential diagnosis Cardiovascular disease -Congenital heart disease -Eisenmenger syndrome -Pulmonary arteriovenous fistulae -Systemic arteriovenous fistulae -Primary pulmonary hypertensionDifferential diagnosis ◼ Cardiovascular disease -Congenital heart disease -Eisenmenger syndrome -Pulmonary arteriovenous fistulae -Systemic arteriovenous fistulae -Primary pulmonary hypertension