Pregnancy with arterial duct

Arterial duct ductus (patent ductus arteriosus, PDA) is a common congenital cardiovascular malformation. After birth, with the development of pulmonary respiratory function and the expansion of pulmonary blood vessels, arterial ducts lose their function and gradually occlude. If the catheter is still open after birth, the arterial catheter is open. But there was no significant increase, and it was only discovered during pregnancy. Or worsened by increased physical burden during pregnancy.

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