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Genetic Testing during Pregnancy by Carine Taleen
If your pregnancy is between 10 to 13 weeks after conception, the method used to collect the sample for DNA Testing is chorionic villus sampling. In this procedure your doctor will insert a thin needle or a fine tube guided by ultrasound, into the womb through the vagina and cervix to obtain a sample of chorionic villi. The sample obtained will then be tested and analyzed.
Amniocentesis involves taking a sample of the amniotic fluid which surrounds the unborn fetus and testing the DNA found in this fluid. The amniotic fluid includes cells which are shed from the body of the unborn baby naturally as it grows. These cells contain the baby's DNA and so can be used to test for genetic disorders in the baby or to compare it to an alleged father's DNA to discover if the father really is the father of the child.
If your pre-pregnancy weight was in the healthy range for your height (a BMI of 18.5 to 24.9), you should gain between 25 and 35 pounds. In the first trimester your gain will be 3 or 4 pounds, partly water weight and partly materials to help your very tiny baby grow. Thereafter gain 1 pound a week for the rest of your pregnancy to ensure optimal baby growth, a more comfortable pregnancy and a safe delivery.
No woman who has become addicted to any type of drug should become pregnant. Drugs taken by the expectant mother will pass into the developing baby and may cause the baby to be born addicted. Any woman who is an alcoholic should not become pregnant. A lot of alcohol can damage the unborn baby. Any woman who is addicted to drugs or alcohol should get help before a pregnancy is started.
Genetic counseling can help identify possible genetic disorders such as thalassemia, sickle cell disease, cystic fibrosis and tay-sachs disease. Thalassemia is a blood disorder that is common among people of Mediterranean, African and Southern Asian descent. Sickle cell disease is a blood disorder that is common in African-Americans. Cystic fibrosis is a disease of the lungs and digestive system common among Caucasians.
CVS, or better known as Chrionic Villus Sampling include the insertion of a thin needle or tube from vagina through the cervix guided by ultrasound to obtain chrionic villi. The villi are little finger structure that attached to the uterus wall. The importance is that it and the fetus have the same genetic makeup as they came from the same fertilized egg. The test could be done earlier in pregnancy from the 10th till 13th weeks.
The most common abnormality seen in late conception is Down Syndrome.it is the most common clinical cause of mental retardation in the world. It occurs once in every 1,500-2,000 births when the mother's age is below 25; one in every 400 births when the mother's age is over 35; once in every 40 births when the mother's age is over 45. A mother with a child with Down syndrome has a one-in-25 chance of recurrence.
Once you have registered at the clinic or with the healthcare provider of your choice, you will take regular blood tests, urine tests, and do ultrasounds at various points. Your weight gain will also be monitored, as well as changes in the shape of the uterus as your baby develops. Additionally, you will be offered the choice of taking various prenatal genetic tests, depending on your age and other individual factors. At various points, the doctor will do a sonogram, listening to your baby's heartbeat.
Symptoms usually begin within 1 to 3 weeks after exposure, and Toxoplasmosis infections usually resolve in 2-4 weeks Blood tests is how toxoplasmosis is detected. In France where the disease is most common all pregnant women are tested.
Read about health diseases.Also read about body dysmorphia and bladder stones.
Article Source: http://www.earticlesonline.com/Article/Genetic-Testing-during-Pregnancy/919738
