Conclusions
Even in the current era, an intramural arrangement, or origin of the three major arteries from the same sinus, remains associated with adverse events following the arterial switch procedure. Optimizing the technique for translocation of these challenging variants be crucial to reducing these ongoing problems. The creation of the International Congenital Heart Surgery Registry to address the issues of reimplantation, having categorised the patterns present used an all-inclusive system such as the original Leiden convention,8 may now provide the data needed to answer the persisting questions.