Newly revised category for complex congenital cardiac segmental connections

In the last article [1], we grouped complex congenital cardiac defects into four subgroups with the rules of cardiac segmental coding [2]. Recently, we found some incongruities presented in these categories, so a newly revised edition (Table 1) to correct the concept is mandatory for the many readers. There are no changes in the group of atrioventricular (AV) and ventricular-arterial (V-A) concordance. In the group of A-V, discordance with V-A concordance, we found the type of {S.L.D} anatomically corrected malposition (ACM) should be renamed as {S.L.D} isolated atrial inversion with malposition (IAI-M). In the group of A-V concordance with VA discordance, another two modes of {S.D.S} and {S.D.I}posterior transposition of the great arteries (TGA) can be added. In the final group of double discordance, we consider an extra mode of {S.L.S} congenital-corrected transposition of the great arteries (ccTGA) that can be included. The hemodynamics of {S.L.D} in group of A-V discordance with V-A concordance possesses the characteristics