Amniocentesis

If you have the test:

One in 200 women who have an amniocentesis will

. We do not know why some women miscarry after these procedures. Most miscarriages happen within 3 days of the procedure, but they can happen up to 2 weeks afterwards. There is nothing you can do to prevent a miscarriage after an amniocentesis.

You may feel anxious before and after the test. You may notice some cramping for a few hours afterwards. This is normal. You can take paracetamol for any discomfort. You do not need to rest or stop driving after the procedure.

It is not always possible to get a result from the first CVS or amniocentesis. Up to 6 in 100 women (6%) will be offered a second procedure.

There is a risk of less than 1 in 1,000 that an amniocentesis will cause a serious infection. You should call your midwife or doctor, or the hospital where you had the test, straight away if you experience any of the following symptoms:

• persistent or severe pain
• a high temperature of 38°C (100.4°F) or more
• chills or shivering
• heavy vaginal bleeding
• discharge of clear fluid from the vagina
• contractions

If you have the test you can find out if your baby has a chromosomal or genetic disorder, which can help you:

• Decide if you want to continue your pregnancy.
• Prepare yourself to care for a baby who may have long term health problems (which may require surgery), or social and educational needs.
• Meet with healthcare professionals who specialise in caring for newborns with serious health problems.
• Contact relevant support groups and organisations for advice and help.