Search for notes by fellow students, in your own course and all over the country.

Browse our notes for titles which look like what you need, you can preview any of the notes via a sample of the contents. After you're happy these are the notes you're after simply pop them into your shopping cart.

My Basket

You have nothing in your shopping cart yet.

Title: Pros and cons of the Amniocentesis and Chorionic villus tests
Description: Notes on the pros and cons of the Amniocentesis and Chorionic villus pregnancy tests to detect medical abnormalities in unborn babies. Written as part of GCSE OCR 21st Century Science Biology, module B1.

Document Preview

Extracts from the notes are below, to see the PDF you'll receive please use the links above


Pros and cons of the Amniocentesis and Chorionic villus tests – James Walker, 9SRT

Pros and cons of the Amniocentesis
and Chorionic villus tests
James Walker, 9SRT

Amniocentesis test
The amniocentesis test is a diagnostic test carried out during pregnancy
...

Pros
 Can identify whether a foetus is likely to develop, or has developed,
down syndrome, spina bifida or sickle cell anaemia
 Carried out before the baby is born, around 15-20 weeks into
pregnancy
Cons
 Testing procedure is very invasive and requires a needle being
inserted into the woman’s abdomen
 Testing procedure has been associated with a 1 in 100 risk of causing
a miscarriage
Chorionic villus test
Chorionic villus sampling, or CVS, is a test carried out during pregnancy to
detect abnormalities in an unborn baby
...

Pros
 Test described by users as uncomfortable rather than painful
 Carried out before the baby is born, around 10-13 weeks into
pregnancy
 Can identify whether a foetus is likely to develop, or has developed,
cystic fibrosis, muscular dystrophy, sickle cell anaemia and other
genetic diseases
Cons
 Only offered in pregnancies where is a high risk of a baby being born
with a serious inherited medical condition
 Testing procedure is very invasive and consists of either a needle
being inserted into the woman’s abdomen or a tube being inserted
through the cervix
 Can cause cramps, similar in intensity to menstrual cramps, for a few
days after the testing procedure
 Testing procedure can lead to miscarriage or birth defects in the baby if
carried out before week 10 of the pregnancy

Made by James Walker on Microsoft Word 2010
...
Information sourced from NHS Choices
Title: Pros and cons of the Amniocentesis and Chorionic villus tests
Description: Notes on the pros and cons of the Amniocentesis and Chorionic villus pregnancy tests to detect medical abnormalities in unborn babies. Written as part of GCSE OCR 21st Century Science Biology, module B1.