Refers to the specific combination of defects with a severely dysplastic pulmonary valve and massively dilated branch pulmonary arteries.
Comment:
The distinctive feature of APVS is the airway obstruction caused by tracheobronchial compression that results from massive dilatation of the main pulmonary artery (PA) and its first- and second-order branches. Consequential tracheomalacia and bronchomalacia determine the timing and severity of respiratory compromise, as well as the morbidity and mortality of these patients.