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ID: 3482544 • Letter: I
Question
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Question 43 Which of the following explains the patent ductus arteriosus? o a. Incomplete fusion of the septum primum and septum secundum a narrow oblique cleft remains between the two atria o b. Failure of obliteration and closure of the communication between the aorta and left pulmonary artery. oc. It gets obliterated functionally shortly after birth, and morphologically during the 1-3 postembryonic months. od. The aortic lumen below the origin of the left subclavian artery is narrowed.Explanation / Answer
PATENT DUCTUS ARTERIOSUS: Patent ductus arteriosus is a condition in which the ductus arteriosus does not closed. The ductus arteriosus is a blood vessel before birth it allows the blood to go around the baby lungs. The patent ductus arteriosus is explained as a condition of abnormal blood flow that occurs between the two major arteries which are connected to the heart before the birth the two major arteries the aorta and pulmonary artery are connected with each other by a blood vessel called ductus arteriosus. These blood vessel is an essential part for fetal blood circulation.
Irregular transmission of blood between the aorta and the pulmonary artery. The ductus arteriosus remains open in these condition and can be closed soon after birth.The B) failure of obliteration and closure of the communication between the aorta and left pulmonary artery.