Some are offered to all women, and some are only offered if you might be at risk of a particular infection or inherited condition. Talk to your midwife or doctor and give yourself enough time to make your decision. They should also give you written information about the tests. Below is an outline of all the tests that can be offered.
There are 4 blood types A, B, AB or O and you will be given a blood test to find out which type you are. It is useful to know your blood group in case you need to be given blood, for example if you have heavy bleeding haemorrhage during pregnancy or birth. When you find out your blood group, you will also find out if your type is positive or negative. This is your 'Rhesus RhD factor', which indicates if you have a substance known as 'D antigen' on the surface of your red blood cells.
If you do, you are RhD positive, if you don't, you are RhD negative. If you are Rhesus negative, you will need an injection at 26 to 28 weeks and at 34 to 36 weeks to protect the baby. Find out more about being Rhesus D negative in pregnancy. It is very common for women to develop anaemia, or iron deficiency during pregnancy. This is because your body needs extra iron so your baby has a sufficient blood supply and receives necessary oxygen and nutrients.
Increasing the amount of iron-rich food you consume during your pregnancy can help avoid iron deficiency anaemia. Some pregnant women require an iron supplement, particularly from the 20th week of pregnancy. Anaemia makes you tired and less able to cope with any blood loss during labour and birth.
Your midwife or doctor can tell you if you need iron tablets to prevent or treat anaemia. The CDC advises that all pregnant women be screened for vaginal and rectal group B strep between 35 to 37 weeks gestation. If you have certain risk factors or a positive result, you should be treated with antibiotics. This will lower the risk of passing GBS to your baby.
Babies whose mothers get antibiotics for a positive GBS test are 20 times less likely to develop the disease than those whose mothers don't get treatment. An ultrasound scan is a test that uses high-frequency sound waves to make pictures of the internal organs. A screening ultrasound is sometimes done during a pregnancy to check normal fetal growth and make sure of the due date.
Ultrasounds may be done at various times throughout pregnancy for many reasons. The specific details may vary slightly, but ultrasounds often follow the same process. Two types of ultrasounds can be done during pregnancy:. Abdominal ultrasound. In an abdominal ultrasound, the healthcare provider puts gel on your abdomen.
The ultrasound transducer glides over the gel to create the image. Transvaginal ultrasound. In a transvaginal ultrasound, the provider uses a smaller ultrasound transducer. He or she puts the transducer into the vagina and rests it against the back of the vagina to create an image. A transvaginal ultrasound makes a sharper image. It is often used in early pregnancy.
There are several types of ultrasound imaging techniques. The most common is 2D. This gives a flat picture of one aspect of the image. If more information is needed, a 3D ultrasound exam can be done. This technique gives a 3D picture. It requires a special machine and special training.
But the 3D image lets the healthcare provider to see width, height, and depth of images. These can be helpful in diagnosis. The 3D images can also be saved for later review. The latest technology is 4D ultrasound. It lets the healthcare provider see the fetus moving in real time.
With 4D imaging, a 3D image is continuously updated. This makes a "live action" view. These images often have a golden color that helps show shadows and highlights. Ultrasounds are constantly being improved and refined. As with any test, results may not be completely accurate. But ultrasound can give valuable information for parents and healthcare providers to help manage and care for the pregnancy and fetus. Ultrasound also gives parents a special chance to see their baby before birth.
This helps them to bond and establish an early relationship. Fetal ultrasound has no known risks other than mild discomfort.
This is because of pressure from the transducer on the abdomen or in the vagina. No radiation is used during the procedure. Transvaginal ultrasound requires that the ultrasound transducer be covered in a plastic or latex sheath. There are several types of ultrasound imaging techniques. As the most common type, the 2-D ultrasound provides a flat picture of one aspect of the baby.
If more information is needed, a 3-D ultrasound exam can be done. This technique, which provides a 3-D picture, requires a special machine and special training. The 3-D image allows the health care provider to see the width, height and depth of the images, which can be helpful during the diagnosis. The 3-D images can also be captured and saved for later review. The latest technology is 4-D ultrasound, which allows the health care provider to visualize the unborn baby moving in real time.
These images often have a golden color, which helps show shadows and highlights. Fetal ultrasound has no known risks other than mild discomfort due to pressure from the transducer on your abdomen or in your vagina. No radiation is used during the procedure. Transvaginal ultrasound requires covering the ultrasound transducer in a plastic or latex sheath, which may cause a reaction in women with a latex allergy. Ultrasound imaging is constantly being improved and refined.
As with any test, the results may not be completely accurate. However, an ultrasound can provide valuable information to parents and health care providers, helping them manage and care for the pregnancy and the baby.
In addition, ultrasound imaging gives parents a unique opportunity to see their baby before birth, helping them to bond and establish an early relationship.
Fetal ultrasound is sometimes offered in nonmedical settings to provide keepsake images or videos for parents. It is best to have an ultrasound performed by trained medical personnel who can correctly interpret the results. Talk with your doctor or midwife if you have questions.
An amniocentesis involves taking a small sample of the amniotic fluid that surrounds the fetus. It is used to diagnose chromosomal disorders and open neural tube defects, such as spina bifida. Testing is available for other genetic defects and disorders depending on your family history and the availability of lab testing at the time of the procedure.
An amniocentesis is generally offered to women between the 15th and 20th week of pregnancy who have an increased risk of chromosomal abnormalities. Candidates include women who will be over age 35 at the time of delivery or those who have had an abnormal maternal serum screening test.
An amniocentesis involves inserting a long, thin needle through your abdomen into the amniotic sac to withdraw a small sample of amniotic fluid. The amniotic fluid contains cells shed by the fetus, which contain genetic information. Although specific details of each procedure may vary, a typical amniocentesis follows this process:. Your doctor will use ultrasound technology to help guide a hollow needle into the amniotic sac.
He or she will withdraw a small sample of fluid for lab analysis. You may feel some cramping during or after the amniocentesis. Strenuous activities should be avoided for 24 hours following the procedure. Women who are pregnant with twins or other higher-order multiples need sampling from each amniotic sac to study each baby.
The fluid is then sent to a genetics lab so that the cells can grow and be analyzed. AFP is also measured to rule out an open neural tube defect. Results are usually available in about 10 days to two weeks, depending on the lab. CVS is a prenatal test that involves taking a sample of some of the placental tissue. This tissue contains the same genetic material as the fetus and can be tested for chromosomal abnormalities and some other genetic problems.
Testing is available for other genetic defects and disorders, depending on your family history and the availability of lab testing at the time of the procedure. Unlike amniocentesis, CVS does not provide information on open neural tube defects. Therefore, women who undergo CVS also need a follow-up blood test between 16 and 18 weeks of pregnancy to screen for these defects. CVS may be offered to women with an increased risk of chromosomal abnormalities or who have a family history of a genetic defect that is testable from the placental tissue.
CVS is usually performed between the 10th and 13th week of pregnancy. Although exact methods may vary, the procedure involves the following steps:. Your doctor may also choose to perform a transabdominal CVS, which involves inserting a needle through your abdomen and into your uterus to sample the placental cells.
You may feel some cramping during and after either type of CVS procedure. The tissue samples are sent to a genetic lab for growth and analysis. Women with twins or other higher-order multiples usually need sampling from each placenta. Ultrasounds may be done at various times throughout pregnancy for many reasons. To confirm the due date. A due date set in the first trimester is rarely changed. The specific details may vary slightly, but ultrasounds often follow the same process.
Two types of ultrasounds can be done during pregnancy:. Abdominal ultrasound. In an abdominal ultrasound, the healthcare provider puts gel on your abdomen. The ultrasound transducer glides over the gel to create the image. Transvaginal ultrasound. In a transvaginal ultrasound, the provider uses a smaller ultrasound transducer. They put the transducer into the vagina and rest it against the back of the vagina to create an image.
A transvaginal ultrasound makes a sharper image. It is often used in early pregnancy. There are several types of ultrasound imaging techniques. The most common is 2-D. This gives a flat picture of one aspect of the image. If more information is needed, a 3-D ultrasound exam can be done. This technique gives a 3-D picture. It requires a special machine and special training.
But the 3-D image lets the healthcare provider see width, height, and depth of images. These can be helpful in diagnosis. The 3-D images can also be saved for later review. The latest technology is 4-D ultrasound. It lets the healthcare provider see the fetus moving in real time. With 4-D imaging, a 3-D image is continuously updated. This makes a "live action" view. These images often have a golden color that helps show shadows and highlights. Ultrasound images may be captured in still photographs or on video to document findings.
Ultrasounds are constantly being improved and refined. As with any test, results may not be completely accurate. But ultrasound can give valuable information for parents and healthcare providers to help manage and care for the pregnancy and fetus.
Ultrasound also gives parents a special chance to see their baby before birth. This helps them to bond and establish an early relationship. Fetal ultrasound has no known risks other than mild discomfort. This is because of pressure from the transducer on the abdomen or in the vagina. No radiation is used during the procedure. Transvaginal ultrasound requires that the ultrasound transducer be covered in a plastic or latex sheath.
This may cause a reaction in women with a latex allergy. Fetal ultrasound is sometimes offered in nonmedical settings to give keepsake images or videos for parents. The ultrasound procedure itself is considered safe, but it's possible that untrained workers may give parents false assurances about their baby's well-being.
Or perhaps a problem may be missed. Having ultrasound done by trained medical staff who can correctly understand findings is recommended. Talk with your healthcare provider or midwife if you have questions.
Many genetic problems can be diagnosed before birth. Your healthcare provider or midwife may advise genetic testing during the pregnancy if you or your partner have a family history of genetic disorders or you have had a fetus or baby with a genetic problem. Search Encyclopedia.
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