Prenatal Screening

Essay specific features

 

Issue:

Science

 

Written by:

Clarice B

 

Date added:

June 24, 2014

 

Level:

University

 

Grade:

A

 

No of pages / words:

4 / 1009

 

Was viewed:

8764 times

 

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Essay content:

Amniocentesis has been around for 20 years and is probably the most well known screening method. It involves testing a sample of the amniotic fluid surrounding the foetus, ultrasound is used to guide a needle through the abdomen, into the womb and a small amount of amniotic fluid (20ml) is removed. The procedure is usually carried out at 14-16 weeks...
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The procedure is usually carried out at 14-16 weeks. Amniocentesis tests for chromosome disorders, and is 99.8% reliable for chromosome number, there is however a risk of miscarriage (usually 1/250 or less) after the procedure. This is one of the reasons why amniocentesis has only been offered to over 35's (since they have a much higher risk of having a Down syndrome child)(Webb 1990)...
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