TITLE

Congenital cardiovascular malformations and the fetal circulation

AUTHOR(S)
Rudolph, A. M.
PUB. DATE
February 2010
SOURCE
Archives of Disease in Childhood -- Fetal & Neonatal Edition;Feb2010, Vol. 95 Issue 2, pF132
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
After birth, gas exchange is achieved in the lung, whereas prenatally it occurs in the placenta. This is associated with differences in blood flow patterns in the fetus as compared with the postnatal circulation. Congenital cardiovascular malformations are associated with haemodynamic changes in the fetus, which differ from those occurring postnatally. Obstruction to cardiac outflow may alter myocardial development, resulting in progressive ventricular hypoplasia. Alteration of oxygen content may profoundly influence pulmonary vascular and ductus arteriosus responses. Interference in blood flow and oxygen content may affect cerebral development as a result of inadequate oxygen or energy substrate supply. The circulatory effects may be gestational dependent, related to maturation of vascular responses in different organs. These prenatal influences of congenital cardiac defects may severely affect immediate, as well as long- term, postnatal prognosis and survival. This has stimulated the development of techniques for palliation of disturbed circulation during fetal life.
ACCESSION #
49550207

 

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