In the study, most patients were treated invasively, all of them were residents in the region, and most of them were under 40 years of age. Defects such as ASD, VSD, and pulmonary stenosis predominated in the untreated group, whereas in the treated group, most patients had undergone surgical correction of ASD, tetralogy of Fallot, aortic coarctation, and VSD. Hypertension and arrhythmias were relevant in both groups, and a large variety of other comorbidities were also observed.