 www.heartandcoeur.com |
Canal Arteriel (Patent Ductus Arteriosus) |
French Version
English Version
Le canal artériel est un court vaisseau qui relie, pendant la vie intra-utérine, l'aorte et l'artère pulmonaire, ce qui permet à la circulation sanguine de court-circuiter les poumons. Il se referme presqu'immédiatement après la naissance. Le canal artériel est un vaisseau sanguin qui n'existe physiologiquement que chez le fœtus. Il est indispensable à la survie du fœtus. Le canal artériel, dévie le sang depuis l'artère pulmonaire, vers l'aorte descendante. Voir image à: http://www.heartandcoeur.com/page_heart_canal_arteriel.php La persistance de l’ouverture du canal artériel après la naissance correspond à une ouverture persistante de ce canal, et peut entraîner entre autres des problèmes respiratoires et une insuffisance cardiaque. Il existe plusieurs corrections chirurgicales possibles dont des corrections par cathétérisme cardiaque selon les cas. Par parapluie pour occlusion de canal artériel, Deux disques en foam avec bras de platine reliés en leur centre sont mis en place à l'intérieur du canal artériel pour obstruer le flot. Par serpentin Coil De petits ressorts métalliques (coil) sont déposés dans le canal artériel pour l'obstruer.
Patent ductus arteriosus (PDA) is a heart problem that occurs soon after birth in some babies. In PDA, there is an abnormal circulation of blood between two of the major arteries near the heart. Before birth, the two major arteries the aorta and the pulmonary artery are normally connected by a blood vessel called the ductus arteriosus, which is an essential part of the fetal circulation. After birth, the vessel is supposed to close within a few days as part of the normal changes occurring in the baby's circulation. In some babies, however, the ductus arteriosus remains open (patent). This opening allows blood to flow directly from the aorta into the pulmonary artery, which can put a strain on the heart and increase the blood pressure in the lung arteries. A PDA is a type of congenital heart defect. A congenital heart defect is any type of heart problem that is present at birth. PDA's are now often closed in the cardiac catheterization laboratory, by the insertion of specially designed coils. These coils sit in the PDA, and expand to the point where they occlude all the blood flow. The traditional way of closing a ductus is through an operation and closure under direct vision, although this method is now typically reserved for premature neonates and if an interventional cardiac catheterization laboratory is not readily available. Closure of a PDA by either interventional cardiac catheterization or surgery is safe and carries negligible morbidity and mortality. See Picture at: http://www.heartandcoeur.com/page_heart_canal_arteriel.php
|
SEARCH ENGINE on Heart and Coeur website
Accueil-Home] 