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Persistent fetal circulation is a condition caused by a failure in the systemic circulation and pulmonary circulation to convert from the antenatal circulation pattern to the "normal" pattern. Infants experience a high mean arterial pulmonary artery pressure and a high afterload at the right ventricle.
This list is incomplete; you can help by adding missing items. ( May 2016 ) Fetal abnormalities are conditions that affect a fetus or embryo , are able to be diagnosed prenatally, and may be fatal or cause disease after birth.
The fetal circulation is composed of the placenta, umbilical blood vessels encapsulated by the umbilical cord, heart and systemic blood vessels. A major difference between the fetal circulation and postnatal circulation is that the lungs are not used during the fetal stage resulting in the presence of shunts to move oxygenated blood and ...
The fractal path is flexible; if one connection is broken, another forms to re-establish the path. [8] This is a useful illustration of how the vascular tree forms, although it cannot be used as a model. The diffusion-limited aggregation model has given simulated results which are closest in comparison to vascular trees in vivo.
Generally, diseases outlined within the ICD-10 codes P00-P96 within Chapter XVI: Certain conditions originating in the perinatal period should be included in this category. Subcategories This category has the following 5 subcategories, out of 5 total.
Histopathology of placenta with increased syncytial knotting of chorionic villi, with two knots pointed out. The following characteristics of placentas have been said to be associated with placental insufficiency, however all of them occur in normal healthy placentas and full term healthy births, so none of them can be used to accurately diagnose placental insufficiency: [citation needed]
It is estimated that less than 1ml of fetal blood is lost to the maternal circulation during normal labour in around 96% of normal deliveries. [1] [2] The loss of this small amount of blood may however be a sensitising event and stimulate antibody production to the foetal red blood cells, an example of which is Rhesus disease of the newborn.
Generally, diseases outlined within the ICD-10 codes Q00-Q99 within Chapter XVII: Congenital malformations, deformations and chromosomal abnormalities should be included in this category. The main article for this category is Congenital disorder .