Prenatal Diagnosis of Absent Pulmonary Valve Syndrome

Abstract

Antenatal diagnosis of the common variant (associated with tetralogy of Fallot) of APVS is easy because of its typical features of a dilated main pulmonary and branch arteries and color Doppler detection of severe stenosis and insufficiency of the functionally absent pulmonary valve. However, the second variant of APVS can have various findings, which can make a specific diagnosis difficult.

Fallot type of absent pulmonary valve syndrome - A case report

“…As per few studies, most of the cases presenting with an intact ventricular septum commonly reveal a patent ductus arteriosus, with relatively small PAs and associated tricuspid atresia. [ 6 9 ] According to these studies, free communication between ventricles and aorta results in reduced atrial blood flow with increased ventricular end diastolic pressure, which may affect the cardiac function and development of the atrioventricular valve. Yeager et al .…”