However, in patients with a PDA, the ductus remains open, or "patent." According to Vitt, when this happens, blood that should flow to the body goes back into the lungs through the PDA. This can ...

SHOULD closure of a patent ductus arteriosus with reversal of flow be attempted? If so, how can the high surgical mortality hitherto reported 1–3 be reduced? An attempt is made to answer these ...

Case 1. T.S., a 21-year-old woman, was first seen in the cardiac screening clinic at Grady Memorial Hospital on March 29, 1957, for evaluation of a heart murmur. She was in the 6th month of pregnancy.