Pulmonary Venous Index as Additional Diagnostic Criteria for Fontan Palliation

Figure 2

Scheme of the pulmonary veins’ confluence into the atrium. RSPV, right superior pulmonary veins, RIPV, right inferior pulmonary veins, LSPV, left superior pulmonary veins, LIPV, left inferior pulmonary veins, LA, left atrium, green ovals, bifurcation of the pulmonary veins (level of segmental pulmonary veins confluence), and yellow ovals, the pulmonary vein orifices (level of confluence of the lobar pulmonary veins).