Ductus arteriosus
A key arterial shunt (ductus) in fetal life. Before birth, blood pumped from the heart through the pulmonary artery toward the lungs is shunted into the aorta. This arterial shunt is a short vessel called the ductus arteriosus. When the shunt is open, it is said to be patent. The ductus arteriosus usually closes at or shortly after birth, permitting blood from that moment on to course from the heart directly to the lungs. However, if the ductus arteriosus remains open (patent), flow reverses and blood from the aorta is shunted left-to-right into the pulmonary artery and thence recirculated through the lungs. A PDA may close spontaneously (on its own). If not, it needs to be prompted pharmacologically to close and, if that does not work, it must ligated (tied off) surgically. PDA is a particularly common problem in premature infants with the respiratory distress syndrome. The left-to-right shunt through the ductus increases their risk of serious complications including brain hemorrhage. IV indomethacin (Indocin) was the conventional therapy to promote closure of PDA in premies but indomethacin affects blood flow to organs such as the kidney and so may lead to complications such as renal failure. Ibuprofen (the active ingredient in Advil, Motrin, Medipren and Nuprin) has been found to work as well as indomethacin in treating PDA in preterm infants with the respiratory distress syndrome and is less likely to impair their kidney function.

* * *

ductus ar·te·ri·o·sus -är-.tir-ē-'ō-səs n a short broad vessel in the fetus that connects the pulmonary artery with the aorta and conducts most of the blood directly from the right ventricle to the aorta bypassing the lungs

* * *

a blood vessel in the fetus connecting the pulmonary artery directly to the ascending aorta, so 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.

* * *

[TA] arterial duct: a fetal blood vessel connecting the left pulmonary artery directly to the descending aorta; called also arterial canal and duct of Botallo.

Medical dictionary. 2011.

Look at other dictionaries:

  • Ductus arteriosus — Saltar a navegación, búsqueda El Ductus Arteriosus o conducto arterioso de Botal es un conducto situado en la parte inferior de la concavidad de la arteria aorta, comunicando con la arteria pulmonar, y que se encuentra presente en el ser humano… …   Wikipedia Español

  • ductus arteriosus — conducto arterioso Diccionario ilustrado de Términos Médicos.. Alvaro Galiano. 2010 …   Diccionario médico

  • Ductus arteriosus — Artery: Ductus arteriosus Plan of the fetal circulation. ( Ductus arteriosus visible at upper right.) …   Wikipedia

  • Ductus arteriosus — Herz eines Hundes, Nr. 6 zum Ligamentum arteriosum zurückgebildeter Ductus arteriosus Der Ductus arteriosus (auch Ductus arteriosus Botalli oder Ductus Botalli genannt), stellt im fetalen (vorgeburtlichen) Blutkreislauf eine Verbindung zwischen… …   Deutsch Wikipedia

  • ductus arteriosus — Channel between the pulmonary artery and the aorta in the fetus, which bypasses the lungs to distribute oxygen received through the placenta from the mother s blood. It normally closes once the baby is born and the lungs inflate, separating the… …   Universalium

  • ductus arteriosus — a blood vessel in the fetus connecting the pulmonary artery directly to the ascending aorta, so bypassing the pulmonary circulation. It normally closes after birth. Failure of the ductus to close (patent ductus arteriosus) produces a continuous… …   The new mediacal dictionary

  • ductus arteriosus — noun a blood vessel in a fetus that bypasses pulmonary circulation by connecting the pulmonary artery directly to the ascending aorta; normally closes at birth • Hypernyms: ↑blood vessel • Hyponyms: ↑patent ductus arteriosus • Part Holonyms:… …   Useful english dictionary

  • Ductus arteriosus — arterinis latakas statusas T sritis gyvūnų anatomija, gyvūnų morfologija atitikmenys: lot. Ductus arteriosus ryšiai: platesnis terminas – kairioji plaučių arterija …   Veterinarinės anatomijos, histologijos ir embriologijos terminai

  • Ductus arteriosus — arterinis latakas statusas T sritis gyvūnų raida, augimas, ontogenezė, embriologija atitikmenys: lot. Ductus arteriosus ryšiai: platesnis terminas – šeštasis aortos lankas siauresnis terminas – arterinis raištis …   Veterinarinės anatomijos, histologijos ir embriologijos terminai

  • Ductus arteriosus — arterinis latakas statusas T sritis embriologija atitikmenys: lot. Ductus arteriosus ryšiai: platesnis terminas – šeštasis aortos lankas siauresnis terminas – arterinis raištis …   Medicininės histologijos ir embriologijos vardynas

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”