Relationship between arch-apex position and postoperative
branch pulmonary venous obstruction
All branch PVOs were on the apex side. The aortic arch and apex were on
the same side in eight patients and on opposite sides in 10 patients.
Among patients with the aortic arch and apex on the same side, four (4/8
= 50%) had branch PVOs. Among patients with these on opposite sides,
three (3/10 = 30%) had branch PVO (P =0.35). PVO occurred 4/7 in
dextrocardia and 3/11 in levocardia (P=0.33) (Table 1 ). In all
PVO patients except one who was performed TAPVC repair using
conventional procedure, they had an obstruction of one branch in the
lower portion of the apex, while the exceptional one had an obstruction
of two branches in the apex side.