What is Amniocentesis?
Amniocentesis is usually performed at the 15-20th week of pregnancy. It is carried out between weeks. In some special cases, it can be performed in later weeks of pregnancy.
While the situations in which it is applied may be for the same reasons as CVS, there may also be additional reasons such as detecting a risk in the quadruple test or detecting suspicious findings in detailed ultrasound.
Ultrasound during the procedure. With the help of it, the gestational sac is entered with a needle through the mother's skin, and a sample of amniotic fluid is taken for the necessary tests.
The sample is sent to the laboratory and the necessary genetic tests are performed. The procedure can also be performed without the need for anesthesia.
Possible complications related to the procedure include pregnancy loss (approximately 1 in 100 pregnancies), infection, bleeding, water breaking, etc.
In some cases, a sample is taken. The laboratory may not be able to give results for various reasons (lack of growth in cell culture, etc.), in such cases the procedure may need to be repeated.
What is CVS?
CVS procedure may be necessary at 11 months of pregnancy. It is performed between -14 weeks. The purpose of the procedure, as in other invasive diagnostic tests, is to detect some genetic diseases of the fetus.
It is generally performed in families that are carriers of a known genetic disease, in cases where a risk is detected in the double screening test, or in cases where an anomaly is observed with ultrasound.
In the CVS procedure, with the help of ultrasound, a needle is passed through the mother's skin and entered into the placenta of the fetus (partner) and a sample is taken from there. The procedure can also be performed without the need for anesthesia.
Possible complications related to the procedure include pregnancy loss (approximately 1 in 100 pregnancies), infection, bleeding, etc.
In some cases, the sample taken may be insufficient, or may not yield results in the laboratory environment for various reasons (lack of growth in cell culture, mosaicism, etc.). In such cases, the procedure may need to be repeated.
When is Cordocentesis Performed?
Cordocentesis is usually performed after the 20th week of pregnancy. The situations in which CVS and amniocentesis are required are similar to those in which CVS and amniocentesis are required.
Ultrasound aids during the procedure. Using a needle, the umbilical cord of the fetus is entered and some blood sample is taken from there for the necessary tests.
The sample is sent to the laboratory and the necessary genetic tests are performed. The procedure can also be performed without the need for anesthesia. Possible complications related to the procedure include pregnancy loss (approximately 2 – 3 in 100 pregnancies), infection, bleeding, water breaking, etc.
In some cases, the sample taken is not tested in the laboratory for various reasons (lack of growth in cell culture, etc.). It may not give any results, in such cases the procedure may need to be repeated.
What is intrauterine transfusion?
In some special cases such as blood incompatibility, anemia may occur in the fetus while in the womb and if blood transfusion occurs. If not given, it may lead to the loss of the fetus in the womb.
During the intrauterine transfusion (giving blood to the fetus in the womb) process, blood can be given to the fetus by using a needle with the help of ultrasound, entering the umbilical cord or the fetus's abdomen, etc.
The blood to be given during this procedure must be prepared specially. It is prepared through various stages. Depending on the underlying problem that requires blood donation, the procedure may need to be repeated at certain intervals while in the womb.
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