Many patients who have had a tubal ligation reversal are older and opt for this screening test. This blood test is usually done between 16 and 18 weeks of gestation. This is used to classify the patient, high risk or low risk. Mother at high risk should then have further tests to analyze the fetal cells in the presence of structural chromosome aberrations problems.
What is meant by a positive quad screen?
A positive test means you have a high risk of chromosomal abnormality or neural tube defects. The display of four can be implicated as a precursor of an extended arrangement of the track improvements scientists to address the underlying problems. Patients with a positive result are taken to the procedures more accurate and profound. Most patients elect to undergo tubal reversal invasive procedures such as amniocentesis.
Sensitivity adjustments to the screen Quad:
Although the 78% sensitivity and 5% in the number of false positive tests in general, makes available in most countries. Its a common choice for classifying the risk sensitivity of the estimated risk is calculated and hear about some of the factors such as:
1. The expectant mother's age, diabetes
2. Conditions of the mother
3. Twins or other multiple pregnancies
4. Gestational age
5. Mothers weight
6. Ethnicity can also check markers
These factors affect the markers, and thus the interpretation is indicated for increased risk.
This, combined translucency in the first quarter neck stiffness and PAPP-A, plus quad screening during the second quarter, and improve sensitivity to 90%. Since most tubal reversal pregnancies in older patients, many choose the integrated display.
Limitations patio screen:
1. The test does not have a definitive diagnosis
2. The test is only a precursor to more predictive amniocentesis.
3. Age of the mother's instructions completely amniocentesis.
Screening for Down syndrome pregnancy after Tubal Reversal
There are few diagnostic tools for detection of chromosomal abnormalities of pregnancy occurs after tubal reversal Surgery. Many women who decided to have their closed tubes are subjected to reversal of tubal ligation procedures many years later for lack of another child or two. When a pregnancy after tubal reversal, cultures are concerns about conceiving a child with Down syndrome. These tests are not only for mothers after reversal of tubal ligation pregnancy. A parent with a history of chromosomal abnormalities in the family is also encouraged to make these tests as well.
Second screening test for trisomy quarter
Quad display is native blood screening test, which is similar to the Triple Screen Test (also known as AFP Plus and a number of marker screening). However, Quad display shows not only the three particular substances is estimated that these tests (AFP, hCG, and estriol), but also a substance known as a fourth inhibin. Its the rule for determining the risk of a pregnant mother taking the child with Down syndrome. This blood test is usually done between 16 and 18 weeks of gestation. Mother at high risk should then have further tests to analyze the fetal cells in the presence of structural chromosome aberrations problems.
First screening test for Down syndrome quarter
Nuchal translucency ultrasound is a diagnostic tool for assessing fetal Down syndrome. It 'done between 11-13 weeks of pregnancy, and is usually combined with the analysis of plasma proteins. Lower plasma protein 8-14 weeks of gestation, may indicate an increased risk of Down syndrome and other problems of pregnancy such as fetal growth restriction and premature birth.
Other tests Resuming after a tubal pregnancy
In addition to the quad screen test with other tests that may be made following reversal of tubal pregnancy.
1. Determination of inhibin A (IH-A)
3. Chorionic villus sampling (CVS)
4. Percutaneous umbilical cord blood sampling (pubs)
5. Preimplantation genetic diagnosis (PGD)