patent ductus arteriosus
Pronunciation: /ˈpeɪtənt ˈdʌktəs ɑrˌtɪriˈoʊsəs/
A congenital heart condition where the ductus arteriosus fails to close after birth, causing abnormal blood flow.
Full Definition
A common congenital heart defect in premature infants where the ductus arteriosus, a blood vessel connecting the pulmonary artery and aorta during fetal development, remains open after birth. Normally, this vessel closes within the first few days of life, but in premature infants, it may remain patent (open), causing blood to flow from the aorta back to the lungs. This can lead to increased workload on the heart and lungs, potentially causing heart failure if left untreated. Treatment options include medication to promote closure or surgical intervention.
Usage
Usage note: Often abbreviated as PDA in clinical documentation.
In Context
- "Echocardiography confirmed a hemodynamically significant patent ductus arteriosus requiring pharmacological intervention." — Cardiology consultation
- "The incidence of patent ductus arteriosus is inversely related to gestational age at birth." — Research study