Prenatal Diagnosis employs a variety of techniques to determine the health and condition of an unborn fetus. Without knowledge gained by prenatal diagnosis, there could be an untoward outcome for the fetus or the mother or both. Congenital anomalies account for 20 to 25% of perinatal deaths. Specifically, prenatal diagnosis is helpful for:
Managing the remaining weeks of the pregnancy

Determining the outcome of the pregnancy

Planning for possible complications with the birth process

Planning for problems that may occur in the newborn infant

Deciding whether to continue the pregnancy

Finding conditions that may affect future pregnancies

There are a variety of non-invasive and invasive techniques available for prenatal diagnosis. Each of them can be applied only during specific time periods during the pregnancy for greatest utility. The techniques employed for prenatal diagnosis include:

Ultrasonography,
Amniocentesis Chorionic villus sampling, Fetal blood cells in maternal blood, Maternal serum alpha-fetoprotein, Maternal serum beta-HCG and Maternal serum estriol.

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Ultrasound in PN Diagnosis

Amniocentesis

Chorionic Villus Sampling

Maternal blood sampling for fetal blood cells

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