Study patients
A total of 411 patients who underwent arterial switch operations between
2000 and 2019 were reviewed. The inclusion/exclusion criteria were
applied, 67 patients had specific pathology requiring arterial switch
operation were excluded because this pathology had innate pulmonary
arteries disease, the rest are 344 patients, 24 of them who were older
than 90 days were also excluded due to basic significant pulmonary
hypertension in this population. There were 11 early mortalities. There
were no late mortalities. Most of the mortalities were in the early era
of the study. None of those (mortality group of patients) underwent
reintervention for residual pulmonary artery stenosis. Therefore, the
final study cohort included 309 patients (Figure 2).