Prenatal diagnostic methods
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Daryoush Farhud1 , Haniyeh Pourkalhor2  |
1- Genetic Clinic, school of Public Health,Tehran University of Medical Sciences, Department of Basic Sciences / Ethics, Academy of Medical Sciences Islamic Republic of Tehran, Iran 2- Genetic Clinic |
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Abstract: (6262 Views) |
Prenatal Diagnosis is the most reliable way of preventing genetic diseases that has been implicated in many countries and has prevented the birth of newborns with different hereditary, congenital and genetic diseases during the past few years. Prenatal diagnosis is actually the use of various diagnostic methods to check the condition of the fetus during pregnancy, because postnatal genetic disorders are generally not treatable. In fact, many of the genetic diseases and birth syndromes that occur at birth in the fetus (congenital) such as Down syndrome or after birth, such as thalassemia and hemophilia, are easily identifiable before birth.
With the advances made in molecular genetics, today, it is possible to detect before birth all genetic diseases that have been identified as pathogenic. Pre-natal diagnosis allows for the presence of healthy children for couples carrying vector pathogens.
In general, using non-invasive methods such as ultrasonography (three or four), the examination of fetal cells and DNA, as well as the examination of the mother's blood and ... many suspicious cases are detected. But invasive methods of pre-natal diagnosis require access to embryonic samples, which include amniocentesis, CVS, pre-implantation (PGD) implantation in pregnancies performed with IVF. |
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Keywords: Prenatal diagnosis, Ultrasound, Amniocentesis, Cvs, Screening tests |
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Full-Text [PDF 521 kb]
(11112 Downloads)
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Type of Study: Review |
Subject:
ژنتیک Received: 2019/09/16 | Accepted: 2019/09/16 | Published: 2019/09/16
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