Ductus arteriosus

Connection between the aorta and the pulmonary artery in the fetus; it allows most of the blood pumped by the left ventricle to bypass the lungs (which do not function in the fetus) and enter the systemic circulation. In some infants, the connection persists after birth; the condition is known as patent ductus arteriosus.


A small vessel connecting the pulmonary artery with the descending aorta.


In a fetus, the blood vessel connecting the left pulmonary artery to the aorta so that blood does not pass through the lungs.


Blood vessels in the fetus connecting the pulmonary artery directly to the ascending aorta, thus bypassing the pulmonary circulation. It normally closes at birth; failure to close—patent ductus arteriosus—often requires surgical correction.


An oval opening in the septum between the atria in the heart that exists before birth and closes at birth, when breathing begins.


A blood vessel in the fetus connecting the pulmonary artery directly to the ascending aorta, thus bypassing the pulmonary circulation. It normally closes after birth. Failure of the ductus to close (patent ductus arteriosus) produces a continuous murmur, and the consequences are similar to those of a septal defect. It may close spontaneously in childhood but often requires surgical closure.


The blood vessel in the fetus through which blood passes from the pulmonary artery to the aorta, thereby bypassing the lungs, which do not function during intra-uterine life. The ductus normally ceases to function soon after birth and within a few weeks is converted into a fibrous cord. Occasionally this obliteration does not occur: a condition known as patent ductus arteriosus (PDA). This is one of the more common congenital defects of the heart, and one which responds particularly well to surgical treatment. Closure of the duct can also be achieved in some cases by the administration of indomethacin.


In the fetus, a blood vessel connecting the main pulmonary artery and the aortic arch. In the fetal circulation, it permits most of the blood to bypass the fetal lungs. Normally, the ductus arteriosus closes soon after birth.


During fetal development, a blood vessel known as the ductus arteriosus serves as a vital connection between the aortic arch and the pulmonary artery. This temporary vessel plays a crucial role in directing blood flow to bypass the lungs since they are not yet fully functional in the womb. However, in healthy newborns, this ductus arteriosus naturally closes shortly after birth as part of the normal physiological process.


In the fetus, a vessel that diverts blood from the pulmonary artery to the aorta, effectively skipping the lungs. Normally, this tube transforms into a fibrous cord after birth and ceases to carry blood. However, if it stays open, a condition known as patent ductus arteriosus, it could lead to severe heart issues. Surgical intervention can fully correct this condition.


 


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