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Triploidy is a rare disease in the fetus that mothers should pay attention to during pregnancy. Today, Cfis.edu.vn will go with you to learn about this disease as well as its symptoms.
What is Triploidy?
Triploidy is a disease caused by an extra set of chromosomes that occurs during egg and sperm production or fertilization – this is a rare chromosomal mutation.
A fetus with Triploidy usually dies in early or mid-pregnancy. The fetal mortality rate is estimated as follows: During the first 9 weeks, the fetal death rate is 5:100, at 16 weeks it is 1:30,000, and from week 20 onwards, the mortality rate decreases. 1,250,000.
There are very few recorded cases of Triploid fetuses that can live to the neonatal stage, most of the fetuses will die in the womb or the first days after birth. A few cases of Triploidy survived to adulthood, all of which were mosaics. The cases in mosaic often have multiple malformations such as mental retardation, motor, epilepsy, deafness, …
Signs and symptoms
The fetus with triloidy will often have heart defects, facial abnormalities , brain and kidney abnormalities, neural tube defects, adhesions of the 3rd and 4th fingers and 2nd and 3rd toe adhesions along with liver abnormalities, gallbladder, volvulus,…
Signs of a pregnant mother’s pregnancy triploidy can be edema, urinary albumin excretion, high blood pressure and some other problems. Triploidy is usually diagnosed in fetuses with placental cysts (partial ovum).
Causes of Triploidy (Triloidy)
Triploidy is caused by an excess of chromosome 3n=69. Triploidy can occur when a normal (1n) egg is fertilized with 2 sperms; or a normal egg (1n) fertilized by a sperm with a set of chromosomes (2n). To date, there is no evidence that the disease is hereditary, nor is it related to the age of the father or mother.
Diagnosis of triploidy (triploid)
Diagnosis by ultrasound will show multiple malformations, decreased amniotic fluid and fetal growth retardation in the uterus. Diagnosis is also made by chorionic villus sampling, or by cytogenetics (karyotyping) from amniotic fluid.
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