Hydrops fetalis
Definition
Hydrops fetalis is a serious condition in which abnormal amounts of fluid build up in two or more body areas of a fetus or newborn.
See also: Erythroblastosis fetalis
Causes
There are two types of hydrops fetalis. The exact cause depends on which form a baby has.
- Immune hydrops fetalis is a complication of a severe form of Rh incompatibility. Rh compatibility causes massive red blood cell destruction, which leads to several problems, including total body swelling. Severe swelling can interfere with how the body organs work.
- Non-immune hydrops fetalis occurs when a disease or medical condition disrupts the body's ability to manage fluid. There are three main causes for this type: heart or lung problems, severe anemia (thalassemia), and genetic defects, including Turner syndrome.
The rate of immune hydrops fetalis has dropped dramatically since the introduction of a medicine called RhoGAM, used to treat mothers at risk for Rh incompatibility.
References
Abrams ME, Meredith KS, Kinnard P, Clark RH. Hydrops fetalis: a retrospective review of cases reported to a large national database and identification of risk factors associated with death. Pediatrics. 2007 Jul;120(1):84-9.
Kumar V, Abbas AK, Fausto N. Robbins and Cotran Pathologic Basis of Disease. 7th ed. St. Louis, Mo: WB Saunders; 2005.
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