concomitant dilation of these vessels. In severe cases,
patients present with inspiratory and expiratory stridor
due to compression of the airways by the dilated pulmonary
arteries. Although compression and obstruction of
the airways are partly responsible for cyanosis, there is
also focal narrowing at the ventriculo-pulmonary junction,
contributing to the hypoxaemia in these patients
[12,14]. In most instances, but certainly not all, the arterial
duct is also absent.
concomitant dilation of these vessels. In severe cases,patients present with inspiratory and expiratory stridordue to compression of the airways by the dilated pulmonaryarteries. Although compression and obstruction ofthe airways are partly responsible for cyanosis, there isalso focal narrowing at the ventriculo-pulmonary junction,contributing to the hypoxaemia in these patients[12,14]. In most instances, but certainly not all, the arterialduct is also absent.
การแปล กรุณารอสักครู่..