Whether the maternity test can be advanced a few days needs to be decided according to the maternity test items, such as the first maternity test, Down’s syndrome screening, etc. can be appropriately advanced a few days; such as four-dimensional ultrasound, NT ultrasound, etc. is generally not recommended to advance.
1. Items that can be advanced:
(1) the first labor and delivery examination: including general examination, laboratory examination, ultrasound examination, etc., there is no strict time limit, pregnant women can be completed before 13 weeks.
(2) Down’s syndrome screening: early Down’s syndrome screening 9 to 13 weeks, mid-term Down’s syndrome screening 15 to 20 weeks, Down’s syndrome screening is mainly to rule out the existence of chromosomal abnormalities in the fetus, so two days in advance to do the Down’s syndrome will not affect the results of the examination.
2. The items that can not be advanced:
(1) four-dimensional ultrasound: 20 to 24 weeks of pregnancy, after 24 weeks of pregnancy, many parts will not be clear. Four-dimensional ultrasound can screen for fetal large structural malformations, including craniocerebral malformations, cardiac malformations, renal malformations, abdominal malformations, neck malformations, facial malformations, and skeletal malformations.
(2) NT ultrasound: pregnant women do it at 11~13+6 weeks of pregnancy for the best results. If it is done after 14 weeks of pregnancy, the transparent layer of the fetal neck will be slowly absorbed, which will lead to less accurate results.
During pregnancy, pregnant women should pay attention to rest, do not overwork, eat a diverse diet, drink more warm water, eat more fresh fruits and vegetables.