a blood vessel in the fetus that links the pulmonary artery with the aorta that closes at birth.
An arterial duct or vessel in the fetal heart that connects the left pulmonary artery to the descending aorta. The ductus arteriosus allows blood to bypass the lungs in the fetal circulation and normally closes shortly after birth. If it does not close, the condition is termed patent ductus arteriosus.
A vascular connection between the pulmonary trunk and the aorta that functions throughout fetal life; normally closes at birth or shortly thereafter and persists as the ligamentum arteriosum.
A small blood vessel connecting the aorta to the pulmonary trunk artery. This vessel is normally present and open in a fetus throughout pregnancy. It normally closes at or shortly after birth.
In fetal circulation, the DA links the pulmonary artery and aorta and diverts oxygenated blood from the inactive lungs to the systemic circulation. Normally closes after first breath at birth.
Blood vessel normally present during fetal life that allows blood to bypass the lungs, which of course are nonfunctional at this time; the ductus normally closes shortly after birth.
The passage which connects the pulmonary artery and the aorta in the foetus. This normally closes at birth, ceases to function, and is converted into a fibrous cord. Patent ductus arteriosus: One of the most common congenital heart defects, in which the ductus arteriosus fails to close at birth. Responds well to surgical correction.
a small vessel connecting the pulmonary trunk with the aorta; found only in the fetus
A communication channel between the main pulmonary artery and the aorta of the fetus. It is obliterated after birth by rising PO2 and changes in intravascular pressure in the presence of normal pulmonary functioning. It normally becomes a ligament after birth but sometimes remains patent (patent ductus arteriosus, a treatable condition).
connection between the pulmonary artery and aorta that prevents much of the blood from reaching the lungs during fetal development
Small blood vessel connecting the pulmonary artery to the aorta.
connecting blood vessel between the pulmonary artery and the aorta in the fetus.
a blood vessel in a fetus that bypasses pulmonary circulation by connecting the pulmonary artery directly to the ascending aorta; normally closes at birth
An open artery that connects the aorta and pulmonary artery before birth. Normally closes after birth but if it doesn't, then surgery or medical treatment may be required.
An artery that allows blood in the fetus to bypass the lungs until the lungs expand at birth. It normally closes soon after birth.
An arterial duct connecting the pulmonary artery to the descending aorta. It is usually open in the fetus where it allows blood to pass from the pulmonary artery directly into the aorta thus by passing the lungs, which are not used for breathing by the fetus (gas exchange for the fetus occurs in the placenta). It is normally closed after birth so that blood can pass through the lungs of the breathing individual before being returned to the heart and aorta for transport to the body.
normally occurring in utero vessel between the pulmonary artery and the aorta. Return to the top
This blood vessel joins the aorta with the pulmonary artery. In many premature babies, this vessel is not closed and must be closed by either drugs or surgery. The closing of this vessel enables proper blood and oxygen flow to the lungs.
In the developing fetus, the ductus arteriosus (DA) is a shunt connecting the pulmonary artery to the aortic arch that allows most of the blood from the right ventricle to bypass the fetus' fluid-filled lungs. During fetal development, this shunt protects the lungs from being overworked and allows the right ventricle to strengthen. There are two other fetal shunts, the ductus venosus and the foramen ovale.