Question
The Down Syndrome screening result is low risk, but the HCG-B2.5 indicator is above the standard, and an ultrasound shows bright spots in the left ventricle. The non-invasive DNA testing result shows that chromosomes 21, 18, and 13 are normal, but a 2.2Mb deletion in the p12-p11.2 region of chromosome 17 is detected. Inquire about the impact of this deletion on the fetus and the accuracy of non-invasive DNA testing.
Answer
The accuracy of non-invasive DNA testing exceeds 99%, but the detection of a deletion in the 17th chromosome and bright spots in the left ventricle may be signs of fetal developmental abnormalities. It is advisable for the individuals to carefully consider whether to continue with the pregnancy, maintain good dietary habits, avoid spicy and irritating foods, and consume more vegetables and fruits. At the same time, they should actively cooperate with medical treatment and should not avoid medical advice.