Patient's question:
Last week, I went for a prenatal check-up, and the detailed examination revealed an abnormality in the fetus's chromosomal structure. My husband and I had undergone chromosomal testing before getting pregnant, and both of us were found to be normal. So, why would the fetus be abnormal? What are the causes of fetal chromosomal abnormalities?Doctor's answer:
The chromosomal karyotypes of both spouses before pregnancy are only preliminary screening for chromosomal karyotypes and cannot be used to detect subtle chromosomal abnormalities or deletions. Fetal chromosomal abnormalities include numerical abnormalities and structural abnormalities. Numerical abnormalities are more common, such as trisomies of 13, 16, 18, 21, and 22, followed by X monosomy.Suggestions: The common causes of fetal chromosomal abnormalities are genetic factors passed down through generations. Other factors such as infections, medications, and environmental influences may also lead to chromosomal abnormalities in embryos.
2. If fetal chromosomal abnormalities are confirmed, it is not recommended to focus on early pregnancy.