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Amniocentesis (also referred to as amniotic fluid test or AFT), is a medical procedure used in prenatal diagnosis of chromosomal abnormalities and fetal infections , in which a small amount of amniotic fluid, which contains fetal tissues, is extracted from the amnion or amniotic sac surrounding a developing fetus, and the fetal DNA is examined for genetic abnormalities.

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Pregnancy: Amniocentesis

... test given during pregnancy called amniocentesis can give doctors essential information ... WebMD Message Boards & Blogs. Health A-Z. ADD/ADHD. Allergies ...www.webmd.com/baby/guide/amniocentesis

Amniocentesis — Blogs, Pictures, and more on WordPress

... gary indiana, robert d patterson md, african american blogs, ... Amniocentesis and ... decided to go in for an amniocentesis to get a definitive answer ...en.wordpress.com/tag/amniocentesis/

Amniocentesis

Amniocentesis is a test to look at the fluid (amniotic fluid) ... WebMD Message Boards & Blogs. Health A-Z. ADD/ADHD. Allergies. Alzheimer's. Anxiety Disorders ...www.webmd.com/baby/amniocentesis-17766

Amniocentesis | QUEST Community Science Blog - KQED

Tags: amnio, amniocentesis, dna, down syndrome, genes, genetics, KQED, pbs, prenatal, testing ... this Blog. The QUEST Community Science Blog explores local ...www.kqed.org/quest/blog/tag/amniocentesis/

The Politics of Amniocentesis - Freakonomics Blog - NYTimes.com

Why would an expectant mother have amniocentesis performed? ... This blog, begun in 2005, is meant to keep the conversation going. ...freakonomics.blogs.nytimes.com/2008/09/11/the-politics-of-am...

Wikipedia About Amniocentesis

Amniocentesis (also referred to as amniotic fluid test or AFT), is a medical procedure used in prenatal diagnosis of chromosomal abnormalities and fetal infections , in which a small amount of amniotic fluid, which contains fetal tissues, is extracted from the amnion or amniotic sac surrounding a developing fetus, and the fetal DNA is examined for genetic abnormalities.

Procedure

Before the actual procedure, a local anesthetic is sometimes given to relieve the pain when inserting the needle used to withdraw the fluid. A needle is usually inserted through the mother's abdominal wall through the wall of the uterus into the amniotic sac. With the aid of ultrasound-guidance, a physician aims towards an area of the sac that is away from the fetus and extracts approximately 20ml of amniotic fluid for testing. The puncture heals, and the amniotic sac replenishes the liquid over a day or so. After the amniotic fluid is extracted, the fetal cells are separated from it. The cells are grown in a culture medium, then fixed and stained. Under a microscope the chromosomes are examined for abnormalities. The most common abnormalities detected are Down syndrome, Edward syndrome 18 and Turner syndrome X. Amniocentesis is most safely performed after the 14th-16th week of pregnancy, but can be done as early as 10th week. Usually genetic counseling is offered prior to amniocentesis.

Risks

Although the procedure is routine, possible complications include infection of the amniotic sac from the needle, and failure of the puncture to heal properly, which can result in leakage or infection. Serious complications can result in miscarriage. Other possible complications include preterm labor and delivery, respiratory distress, postural deformities, fetal trauma and alloimmunisation (rhesus disease). Studies from the 1970's originally estimated the risk of amniocentesis-related miscarriage at around 1 in 200 (0.5%).[http://www.webmd.com/content/article/129/117333.htm Amniocentesis Risk Overrated? ] A more recent study (2006) has indicated this may actually be much lower, perhaps as low as 1 in 1,600 (0.06%). In contrast, the risk of miscarriage from chorionic villus sampling (CVS) is believed to be approximately 1 in 100, although CVS may be done up to four weeks earlier, and may be preferable if the possibility of genetic defects is thought to be higher .

Amniocentesis and stem cells

Recent studies discovered that in amniotic fluid there are a lot of multipotent stem cell, mesenchimal, ematopoietich, neural and epitelial stem cell123. Amniotic stem cells don't have ethical problem. In fact, in harvesting embryonic stem cells, a human embryo is destroyed, and so it's considered it immoral. Another potential benefit of using amniotic stem cells over those obtained from embryos is that they side-step ethical concerns among pro-life activists by obtaining pluripotent lines of undifferentiated cells without harm to a fetus or destruction of an embryo.

Search results for Amniocentesis

Amniocentesis - Wikipedia, the free encyclopedia

... Tests - Amniocentesis". Harvard ... a b Amniocentesis Risk Overrated? ... Amniocentesis - Fetoscopy - Chorionic villus sampling - Triple test - non-stress ...en.wikipedia.org/wiki/Amniocentesis

Amniocentesis | BabyCenter

Find out about the risks and benefits of amniocentesis during pregnancy. ... What is the risk of miscarriage from amniocentesis? Is there any way to reduce the risk? ...www.babycenter.com/0_amniocentesis_327.bc

Amniocentesis

INTRODUCTION Amniocentesis is a procedure in which a small amount of fluid is ... Amniocentesis: Technique and complications ... However, amniocentesis can ...www.uptodate.com/patients/content/topic.do?topicKey=pregnan/...

Amniocentesis - Yahoo! Health

Amniocentesis is generally done between weeks 15 and 20 (usually around week 16) ... Amniocentesis is a test to look at the fluid (amniotic fluid) that ...health.yahoo.com/pregnancy-tests/amniocentesis/healthwise--h...

Amniocentesis | AHealthyMe.com

Amniocentesis -- or amnio for short -- is a prenatal diagnostic test that uses a ... Since amniocentesis also reveals the sex of ... Genetic Amniocentesis. ...www.ahealthyme.com/topic/amniocentesis

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News about Amniocentesis

‘Bad Mother’s’ day: Waldman revels in parenting controversy

Lawrence Journal-WorldThe morning after Ayelet Waldman’s infamous essay was published, she got a call from a friend who warned: Don’t watch “The View.”http://www2.ljworld.com/news/2009/may/10/bad-mothers-day-wal...

Catching up with ... Ayelet Waldman

San Francisco ChronicleAyelet Waldman sent shock waves through the mom-o-sphere in 2005 when she wrote an essay saying she loves her husband, Pulitzer Prize-winning author Michael Chabon, more than her children. She defended her stance on "The Oprah Winfrey Show," and moms in the...http://www.sfgate.com/cgi-bin/article.cgi?f=/c/a/2009/05/07/...

Data 'mishandling' stalls Down's syndrome test

NatureResearch data supporting a non-invasive prenatal screen for Down's syndrome were "mishandled" and cannot be relied on, according to the biotechnology company that has been developing the test.http://www.nature.com/news/2009/090506/full/459023b.html?s=n...

Thank heaven he's mine

The NH MirrorSon born with Down Syndrome is a gift. I was not quite 20 weeks pregnant with my second child when I went in to discuss test results at my OB/GYN’s office.http://www.thenhmirror.com/2009/0506/IHW-ThankHeaven.html

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The Motley FoolThese promising companies were chosen by investors who've picked stocks that beat the market handily.http://www.fool.com/investing/high-growth/2009/05/04/tomorro...

News about Amniocentesis

Genetic techniques help search for a blood test for Down syndrome

International Herald TribuneFor three decades, scientists have been trying to develop a noninvasive prenatal test for Down syndrome that would replace amniocentesis, which can cause miscarriages. Now, scientists using powerful genetic techniques are closing in on that goal with ... http://www.iht.com/articles/2008/10/09/healthscience/sndown....

'Safer' test developed for Down's

BBC NewsOne of the current ways of confirming the syndrome is amniocentesis, in which a needle is used to take a sample of the fluid within the womb. Approximately one in 100 women who have the test will miscarry as a result, according to the Royal College ... http://news.bbc.co.uk/1/hi/health/7654201.stm

New Down's Syndrome test developed

MSN UK NewsA non-invasive test for mothers-to-be worried that their unborn child has Down's syndrome has been developed. The technique involves looking for tell-tale chromosome fragments in a blood sample. At present a procedure called amniocentesis is used to ... http://news.uk.msn.com/Article.aspx?cp-documentid=9971648

New prenatal test may be less risky than amniocentesis

Contra Costa TimesBuilding on the latest developments in DNA science, Stanford University researchers have designed a prenatal genetic test that appears to be just as accurate — but much safer than current methods such as amniocentesis — by using a single sample ... http://www.contracostatimes.com/localnews/ci_10663843

Genetic Test in Pregnant Women's Blood May Detect Down Syndrome

BloombergThe blood was taken when the women were 10 to 35 weeks pregnant and after a standard test such as amniocentesis was performed. More research is needed to confirm the findings and test the method's accuracy and reliability. Down syndrome is the ... http://www.bloomberg.com/apps/news?pid=20601082&sid=avev5GFa...

Search results for Amniocentesis

Amniocentesis - March of Dimes

Welcome to the March of Dimes National Web site! Inside you will find information and answers about pregnancy, your baby, folic acid, prematurity, genetic disorders, birth defects ... http://www.marchofdimes.com/professionals/14332_1164.asp

Amniocentesis - March of Dimes

Amniocentesis is a special prenatal test given to some pregnant women to test for birth defects and certain other conditions. It is usually given between 15 and 20 weeks of ... http://www.marchofdimes.com/pnhec/159_520.asp

AmniocentesisTX.com

What is an amniocentesis? An amniocentesis is a procedure used to obtain a small sample of the amniotic ... http://amniocentesistx.com

Amniocentesis - MayoClinic.com

Amniocentesis — Overview covers definition, risks, results of this prenatal test. ... Definition. Amniocentesis is a procedure in which amniotic fluid is removed from the uterus ... http://mayoclinic.com/health/amniocentesis/MY00155/UPDATEAPP...

Amniocentesis

Amniocentesis is a test to look at the fluid (amniotic fluid) that surrounds your baby (fetus). Amniotic fluid has cells and other substances that can give clues about the health ... http://www.webmd.com/baby/Amniocentesis-17766
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Videos de embarazo - Amniocentesis

Videos de embarazo - AmniocentesisVideos sobre el embarazo y la amniocentesis. La amniocentesis es una prueba prenatal durante el embarazo común en la cual se extrae una pequeña muestra del líquido amniótico...Flash - Video

What Is an Amniocentesis?

What Is an Amniocentesis?An amniocentesis tests amniotic fluid for genetic disorders and fetal infections. Here's what happens during an amniocentesis.Video - Video

Understanding Amniocentesis

Understanding AmniocentesisAmniocentesis is a prenatal screening test that can help your doctor determine if your baby is likely to have severe birth defects. Amnio can have complications, but for many...Flash - Video

Mommy's Minute - Amniocentesis Test

Mommy's Minute - Amniocentesis TestIf you're pregnant and over the age of 35 your doctor may suggest having an amniocentesis test. Visit www.ThePregnancyShow.comFlash - Video

What is an "amniocentesis"? (What i...

What is an Kathryn J. Shaw, M.D. (Maternal-Fetal Medicine, White Memorial Medical Center, Los Angeles)Flash - Video

Answers for Amniocentesis

Amanda SAmniocentesis?Amanda SNo, it really doesn't mean that anything is wrong. It just means that something "could" be wrong. EDIT: Watch this video, it's very informative: http://www.pregnancy.org/healthvideos.php Als...well thenIs an amniocentesis done when they do the testing for neural tube defects and down syndrome?well thenIt's highly unlikely you're having amnio done. You're probably having a blood test called a triple screen or a quad screen (one looks for the *risk* of three defects, the other for four). Let me s...dsrrae03Has anyone had an amniocentesis to detect fetal lung development?dsrrae03I had an amniocentesis at 35 weeks to check fetal lung maturity. I had the test done on a Thursday and it showed her lungs were not yet mature. I then gave birth to her the following Tuesday and she...twins4meWhat is having an amniocentesis test like?twins4mehi there, i havent had one personally. but a close friend of mine did for her 2nd baby because the n.t scan came back inconclusive. She said the actual procedure did not hurt, they numb the area so yo...ero eWould you have an amniocentesis, if you have an abnormal blood test?ero eDepends on what you would do with the information. If the results of the amnio aren't going to change anything about your pregnancy and you will continue on anyway, then why add the risk of the proced...
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