Female friends often undergo prenatal check ups during pregnancy, such as Down syndrome screening and ultrasound, which are very important examination items, especially ultrasound, which should be done several times throughout the pregnancy. Some pregnant women may find that the fetus has a large head and short legs after undergoing ultrasound. So, what are the reasons for fetal head deviation and short thighs?
Fetal head size and leg length are relative and require separate screening. There are many reasons that can lead to fetal head enlargement, such as widened lateral ventricles, hydrocephalus, etc., which can cause the fetal biparietal diameter to exceed the normal value. For fetal head enlargement caused by these reasons, timely treatment measures must be taken.
When the gestational age calculation is incorrect, it is likely to cause the actual gestational age to be greater than the estimated gestational age, which can also result in higher fetal head data. In addition, genetic factors are also one of the common causes of fetal head size. If parents have a larger head, it is likely to be inherited from the fetus.
Many pregnant women have found that their fetuses have short legs after undergoing ultrasound examination. This may be caused by abnormal development of fetal long bones, which is a very serious and deadly disease, so careful screening should be conducted during pregnancy. The physical growth of a fetus can be influenced by genetic factors, and short legs may also be inherited from parents. In fact, as long as it is not caused by a disease, there is no need to worry too much.
