In pregnant women with increased risk of chromosomal anomaly
in screening tests or ultrasonography, it is based on the principle of taking
sample tissue from Chorionic villus layer with a thin needle or cannula,
between 10-13 weeks of pregnancy. It does not require any anesthesia. Since the
Chorionic layer develops from the embryo, it carries the genetic structure of
the baby. This tissue is cultured and chromosome index is obtained and genetic
diagnosis is made. If a chromosomal disorder is detected, pregnancy may need to
be terminated. If done in experienced hands, pregnancy loss rates that may
occur after CVS are approximately the same as amniocentesis, that is, one of
200 - 300 pregnancies may result in miscarriage. The diagnostic accuracy rate
is around 98% due to placental mosaicism.
Its advantage over amniocentesis is that it can be applied at
much earlier weeks of pregnancy, so that it can be diagnosed earlier, the
disadvantage is that the risk of losing the baby is relatively high and
technically more difficult. (Amniocentesis is done at 16-18 weeks of
pregnancy.)
- AMNIUM FLUID MEASUREMENT
- AMINOSYNTHESIS
- CORDOCENTESİS
- CHORİONİC VİLLUS SAMPLİNG (CVS)
- NST (NONSTRES TEST)
AMINOSYNTHESIS
AMNIUM FLUID MEASUREMENT
CHORİONİC VİLLUS SAMPLİNG (CVS)
fethal nuchal thickness test
GLUCOSE SCREENİNG TEST
INTEGRATED TEST
QUADRUPLE BLOOD SCREENİNG TEST
TRIPLE SCAN TEST
