Definition

Noun: A congenital heart defect where the ductus arteriosus, a blood vessel that connects the pulmonary artery to the aorta in a fetus, fails to close after birth. This persistent opening allows oxygen-rich and oxygen-poor blood to mix, which can lead to inefficient circulation and strain on the heart.

Usage

This term is used in medical contexts to describe a specific, diagnosable condition. * The echocardiogram confirmed the diagnosis of patent ductus arteriosus. * A small patent ductus arteriosus may close on its own, but a larger one often requires intervention.

Advanced Usage

• "To have a patent ductus arteriosus": Describes the state of being diagnosed with the condition.
  • The newborn was found to have a patent ductus arteriosus.
• "Closure of a patent ductus arteriosus": Refers to the therapeutic goal, either spontaneous or via medical procedure.
  • The cardiologist scheduled a catheter procedure for the closure of the patent ductus arteriosus.

Variants and Related Words

• PDA: A common acronym used in medical shorthand for patent ductus arteriosus.
  • The nurse noted the history of PDA in the patient's chart.
• Ductus arteriosus: The name of the fetal blood vessel itself, which is normally (open) before birth and closes afterward.
• Patent (adjective): In a general medical context, means "open" or "unobstructed."

Synonyms

• Persistent ductus arteriosus: A less common but synonymous phrase emphasizing the failure of the vessel to close.

Noun

1. a ductus arteriosus that failed to close at birth; may require surgical correction