Fetal ultrasound examination of the nasal bone is not shown, it may be due to the fetal position changes caused by the nasal bone observation is not clear, or may be the presence of developmental deformities and other conditions.
When a pregnancy undergoes ultrasound, the test results will vary according to the position of the fetus. When the nasal bone of the fetus cannot be observed under the ultrasound, it may be blocked, etc. In this case, it is necessary to make the fetus move to change the position and re-determine the measurement.
When the fetus has chromosomal abnormalities and malformations in body development, the nasal bone may not be shown on the ultrasound, which may be accompanied by abnormalities in other parts of the body, and non-invasive DNA testing is needed to determine this.
When ultrasound examination of the fetus suggests that the nasal bone is not shown, it is necessary to consult a doctor in time, under the guidance of the doctor to carry out a clear examination to determine whether the development of the fetus is normal.