Conotruncal anomalies are characterized by abnormalities of the great
vessels of the heart. There are five types of conotruncal anomalies named as tetralogy
of Fallot, double outlet of the right ventricle, transposition of the great arteries, truncus
arteriosus and corrected transposition of the great arteries. These lesions known as
“conotruncal anomalies” are caused by aberrant development of the conotruncal region
of the embryonic heart. Prenatal diagnosis of congenital heart disease optimizes
obstetric and neonatal care. Identification of these anomalies in prenatal life allows a
variety of treatment with options to be considered, including delivery at a tertiary
center, termination of pregnancy in some cases and in utero therapy. Majority of
fetuses with conotruncal anomalies will undergo surgery in the neonatal period or in
the first year of life. This chapter will discuss the fetal echocardiographic findings,
extracardiac and chromosomal anomalies associations, prenatal and postnatal outcomes
of conotruncal anomalies.
Keywords: Conotruncal anomalies, Corrected transposition of the great arteries, Double outlet right ventricle, Tetralogy of Fallot, Truncus arteriosus, Transposition of the great arteries.
