Screening for "fetal zona pellucida"

Screening of the “Zero Belt of the Fetal Neck” is the first screening test for children with Down's syndrome in early pregnancy. This is the first fetal screening program that pregnant women will encounter in the early stages of pregnancy, screening the accuracy of Down's children. Up to 85-90%, it is the first choice for screening now. It is the first pregnancy screening for Down's disease. The first pregnancy is 11 to 13 weeks. The transparent belt of the neck refers to the space of the subcutaneous water behind the neck of the fetus. When performing ultrasonic scanning, the doctor will measure the thickness of the gap between the skin and the tissue in detail. The chromosomal abnormality of the fetus will increase the transparent belt of the neck. Thick, especially for Down's disease. Usually, Down's syndrome is more likely to occur in older women. The medical literature has confirmed that the thicker the zona pellucida in the posterior neck, the higher the chance of chromosomal abnormalities. Basic Information Specialist classification: prenatal and postnatal examination classification: ultrasound Applicable gender: whether women are fasting: not fasting Analysis results: Below normal: At present, it is generally considered that the transparent band of the fetal neck is less than 3 mm. Normal value: Fetal neck transparent belt: 0-3mm Above normal: Abnormal results The fetal neck transparent belt ≥ 3mm is an abnormal standard. Down's syndrome, chromosomal abnormalities, etc. negative: Positive: Tips: It is best to check in the early pregnancy, too greasy before doing it. Normal value At present, it is generally considered that the transparent band of the fetal neck is less than 3 mm. Clinical significance Abnormal results: the fetal neck transparent belt ≥ 3mm is abnormal. Down's syndrome, chromosomal abnormalities, etc. People who need to be examined: pregnant women and people who need to have a fetal development check. High results may be diseases: Down syndrome in children, chromosomal abnormalities Taboo before the examination: poor rest, improper diet, excessive fatigue. Requirements for inspection: Actively cooperate with the doctor's work. It is best to check in the early pregnancy, do not eat too greasy before doing, and do not drink milk soy milk and other foods that cause bloating. Inspection process The B-ultrasound was examined to measure the thickness of the zona pellucida of the fetus and was analyzed. The thickness of the transparent band of the fetal neck is measured by ultrasonic waves to be less than 2.2 to 3.0 mm. Not suitable for the crowd No taboos. Adverse reactions and risks No complications.