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Relating to the placenta.
Farlex Partner Medical Dictionary © Farlex 2012

hydrops fetalis

Kernicterus, Rh incompatibility, Rh-induced hemolytic disease of newborn Obstetrics An accumulation of fluid in neonates, resulting in a 'puffy', plethoric or hydropic appearance that may be due to various etiologies Clinical Ascites, edema, ↓ protein or chronic intrauterine anemia, hepatosplenomegaly, cardiomegaly, extramedullary hematopoiesis, jaundice, pallor COD Heart failure. See Hemolytic disease of the newborn.
Hydrops Fetalis, causes
Immune Mother produces IgG antibodies against infant antigen(s), often an RBC antigen, most commonly, anti-RhD, which then passes into the fetal circulation, causing hemolysis
Non-immune Hydrops may result from various etiologies including
•  Fetal origin, eg congenital heart disease (premature foramen ovale closure, large AV septal defect), hematologic (erythroblastosis fetalis, α-thalassemia due to hemoglobin Barts, chronic fetomaternal or twin-twin transfusion), infection (CMV, herpesvirus, rubella, sepsis, toxoplasma), pulmonary (cystic adenomatoid malformation, diaphragmatic hernia, with pulmonary hypoplasia, lymphangiectasia), renal (vein thrombosis, congenital nephrosis) and teratomas, skeletal malformations (achondroplasia, osteogenesis imperfecta, fetal neuroblastomatosis, storage disease, meconium peritonitis, idiopathic)
•  Placental Chorangioma, umbilical or chorionic vein thrombosis
 Maternal DM, toxemia  
McGraw-Hill Concise Dictionary of Modern Medicine. © 2002 by The McGraw-Hill Companies, Inc.


Relating to the placenta.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012
References in periodicals archive ?
The oldest fossil that grouped with the living placental mammals dates to 64.85 million years ago.
The timing supports a view long held by many paleontologists--that the disappearance of the dinosaurs and changes in the postextinction ecosystem might have opened up opportunities for placental mammals, says Jaelyn Eberle, a vertebrate paleontologist at the University of Colorado Boulder.
By combining these two types of data scientists reconstructed, to an unprecedented level of detail, the family tree of placental mammals.
Thanks to the incredible amount of anatomical information collected, the researchers were able to reconstruct the animal that gave rise to every placental mammal following the extinction of the dinosaurs.
Why didn't marsupials share Australasia with placental mammals?
One finding pertinent to his research was the discovery of an ancient tooth and bone near Murgon, Queensland, of an animal provisionally identified as a placental. If this is the case, the argument that early marsupials thrived in Australia due to the complete absence of placental competitors loses much of its force.
As the earliest known fossil ancestral to placental mammals, Juramaia providesd fossil evidence of the date when eutherian mammals diverged from other mammals: metatherians (whose descendants include marsupials such as kangaroos) and monotremes (such as the platypus).
On other continents, though, marsupials were largely wiped out by placental mammals.
Not surprisingly, scientists have found that Australia's marsupials, protected for millions of years from placental immigrants, have moved into certain ecological niches typically held by placental animals.