What is amniocentesis? When to apply?

What is amniocentesis? When to apply?

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Genetic diseases and infections in fetus can be detected in this way. Amniocentesis is also performed for fetal lung maturation determination and status detection in Rh nonconformity. It was first made in 1966 in the world. 99% of chromosomal diseases are diagnosed by amniocentesis.
If the maternal age is advanced, there is a history of genetic disease in the family, blood tests are found to be defective, if there are suspicious images on ultrasound, if the mother is very anxious, amniocentesis is decided. Down syndrome (trisomy 21), trisomy 13 and 18 are the most commonly screened. In addition, sex chromosomal genetic diseases such as Turner syndrome, etc. are easily diagnosed. The sex of the fetus can also be determined in this way. Detection of alpha-feto protein in amniotic fluid enables the diagnosis of very serious problems such as fetal neural tube abnormalities, abdominal wall abnormalities and anencephaly. By amniocentesis performed in the 2nd or 3rd trimester of pregnancy, lung development of the fetus can be determined and information can be obtained by searching for bacteria in the amniotic fluid at the risk of early pregnancy.
After the procedure, bed rest is recommended to the expectant mother, the person should not lift heavy and do not work. Sexual intercourse is also prohibited for a certain period of time. In case of vaginal bleeding, amniotic fluid coming from the vagina, abdominal pain, contraction of the abdomen and fever, she should contact the doctor immediately. If the mother's blood type is Rh - and the father is Rh +, a blood mismatch needle should be given after this procedure.
The process causes a low of 1 in 200 to 500. The risk of infection is around 1 in 1000. The risk of injury to the fetus is very rare. Genetic amniocentesis of pregnancy 16-17. done during the week. Final result is obtained within 3 weeks.
Another alternative to amniocentesis is chorionic villus sampling. This process is at the beginning of pregnancy; 10-12. week, the final result is taken again in 3 weeks. Either vaginally or by entering the mother's abdomen under sterile conditions, a small amount of sample is taken from the placenta and genetically examined. The best part of this test is that it allows early diagnosis, the fetus is made necessary to grow further. However, the complication is higher. There is a greater chance of misdiagnosis.


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