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Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
A 3-day-old boy delivered at 32 weeks of gestation is experiencing respiratory distress syndrome. The physician detects a hea murmur characteristic of a patent ductus aeriosus, a diagnosis that is confirmed with an echocardiogram. Which embryonic structure is involved in this diagnosis?
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The correct answer is  C. Patent ductus aeriosus (PDA) is a condition in which the ductus aeriosus, a bloodvessel that allows blood to bypass the baby's lungs before bih, fails to normally close afterbih. The ductus aeriosus is derived from the distal poion of the left sixth aoic arch