Figure 2From: Blood stasis may cause thrombosis in the left superior pulmonary vein stump after left upper lobectomy Velocity in the pulmonary vein stump. Blood flow is significantly slower in the left superior pulmonary vein stump than in the right pulmonary vein stumps. However, that is not significantly slower than in the left inferior pulmonary vein. LIPV: Left inferior pulmonary vein, LSPV: Left superior pulmonary vein, RIPV: Right inferior pulmonary vein, RSPV: Right superior pulmonary vein.Back to article page