defect is an alternative method, especially when the atrial septum is thickened and resistant to pull-through BAS. Such conditions can be anticipated in infants aged >4-6 weeks or in those with left-sided obstructive lesions such as hypoplastic left heart syndrome (HLHS). 2-5 In addition, all the catheters that could be used for pull-through BAS in Japan required a sheath of 6Fr or larger until recently, which may increase access-related complications in small infants. Therefore, in Japan, static BAS has also been used as an alternative to pull-through BAS to reduce vascular injury in patients with low body weight.Although static BAS cannot be replaced by surgical
Balloon atrial septostomy (BAS) is an essential catheterization procedure for some congenital heart lesions that require interatrial communication, such as to increase cardiac output in right-sided obstructive lesions, to enhance mixing in patients with transposition of the great arteries (TGA), and to relieve left atrial hypertension in left-sided obstructive lesions.Pull-through BAS, in which the inflated balloon catheter is forcefully pulled through the atrial septum to tear open the atrial septum, is the conventional and standard BAS method. 1 Static BAS (or static balloon atrial septal dilation) using a dilation balloon to enlarge the atrial septal