The diagnosis of critical conotruncal anomalies in fetal echocardiography enables the prenatal detection of structural disorders of the outflow tracts of the great arteries. Early and accurate diagnosis reduces the risk of postnatal hemodynamic instability and allows planned delivery in an appropriate center and timely surgical preparation.<\/p>\n
Early diagnosis of conotruncal defects in fetal echocardiography requires the systematic evaluation of the outflow tract and three-vessel-trachea views in addition to the four-chamber view. Pathologies such as Tetralogy of Fallot, transposition of the great arteries, and truncus arteriosus can be identified with a high accuracy rate through this detailed examination.<\/p>\n
The ultrasonographic findings of great artery anomalies in the prenatal period are characterized by abnormalities in the relationship between the aorta and pulmonary artery. Signs such as vessel diameter mismatch, parallel course, or a single artery appearance constitute an indication for advanced fetal cardiac examination and directly affect the perinatal prognosis.<\/p>\n
In high-risk pregnancies, indications for fetal cardiac screening expand in the presence of a family history of congenital heart disease, increased nuchal translucency, and accompanying extracardiac anomalies. A multidisciplinary approach and serial follow-ups play a fundamental role in the management of critical conotruncal defects that may require urgent postnatal intervention.<\/p>\n