10/21/2023 0 Comments Pda net full![]() ![]() Untreated, the blood pressure in the baby's lungs might increase (pulmonary hypertension) and the baby's heart might enlarge and weaken. The abnormal opening causes too much blood to flow to the baby's lungs and heart. If the connection remains open, it's referred to as a patent ductus arteriosus. In premature infants, the opening often takes longer to close. ![]() The connection diverts blood from a baby's lungs while they develop, and the baby receives oxygen from the mother's circulation.Īfter birth, the ductus arteriosus normally closes within two or three days. Genetic factors might play a role.īefore birth, an opening that connects two major blood vessels leading from the heart - the aorta and pulmonary artery - is necessary for a baby's blood circulation. Request an Appointment at Mayo Clinic CausesĬongenital heart defects arise from problems early in the heart's development - but there's often no clear cause.
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