There are a number of different subtypes of tetralogy of Fallot: Tetralogy of Fallot with pulmonary stenosis (75%), Tetralogy of Fallot with pulmonary atresia (20%) and dysplastic (absent/ring) pulmonary valve syndrome (5%).

This case demonstrates the typical findings on the standard fetal echo views in a case of tetralogy of Fallot with pulmonary stenosis.

Images courtesy of Dr Simon Meagher