Accurate diagnosis of a PDA requires echocardiography. Echocardiography together with Doppler and color Doppler allows assessment of patency, diameter of the DA (using color Doppler), and direction of ...

This paper presents serial cardiac-catheterization data showing spontaneous functional closure of large symptomatic defects in 3 infants. One had an associated moderate-sized patent ductus arteriosus ...

Patent ductus arteriosus (PDA), one of the more common cardiac defects present at birth, is the persistence of an opening between the pulmonary artery and aorta. This opening is as a result of failure ...

Larger DA diameter was significantly related to this low systemic blood flow in the early hours after birth. [13] By the time the PDA became clinically apparent (mean 72 hours), the infants were ...