Many women of childbearing age do not know that they have been pregnant, for various reasons, do you take drugs? Does this affect the health of the fetus? If you find that you are pregnant after taking the medicine, we need to consider it from the following three aspects.
First, what kind of medicine is taken? What is the level of influence of the medicine on the embryo?
According to the danger of drugs to fetuses, the US Food and Drug Administration graded the drug to ABCD X level 5. Among them, the A -level is the safest.
Class A: Clinical data cannot be confirmed that drugs that have harmful to fetuses are the least likely to cause harm to fetuses and have no teratogenicity, such as an appropriate amount of vitamins.
Grade B: Nothing of animal experiments research and clinical control tests are not harmful to the fetus, that is, there is no sufficient clinical data to indicate whether the pregnancy is suitable for this type of medicine.wait.
Class C: Animal experiments show that there is a bad impact on the fetus, but there is no sufficient clinical data to prove that it is harmful to the fetus and needs to be used with caution. It can only be used only after fully measured the pros and cons, such as Qinglinin eye drops and different smoke.
Class D: Some clinical evidence proves that such drugs are harmful to the fetus. Only when pregnant women have life threats or severe diseases, and there are no other effective drugs that can be replaced, they will consider use, such as sulfillin.
Grade X: Drugs that can cause fetal malformations, which clearly indicate drugs disabled in pregnancy or preparation of women during pregnancy, such as methotrexate and hexylol.
When taking A and B -level drugs under the guidance of a doctor, the benefits are greater than the disadvantages, so you don’t need to worry about it. It can be routinely according to the birth check -in, because the effect of deformed effects is not obvious when such drugs are used normally.If the super instructions take A, B -level drugs or during pregnancy (especially before 12 weeks of pregnancy), you should accidentally use C, D, and X -level drugs, and you should go to the hospital’s eugenics genetic department for consultation.Doctor’s order.
Second, when will the medicine take?
(1) Within 2 weeks after the formation of fertilized eggs: Within 2 weeks after fertilization eggs, the effect of drugs on embryos is full or invalid 2.Usually, the ovulation period can usually be calculated in the case of menstruation. Fertilization occurs within 12h after ovulation, and the entire fertilization process takes about 24 h.Within 2 weeks after the formation of fertilized eggs, it is also known as the early stage of bed. At this time, the fertilized eggs have not completely impact on the influence of the fertilized eggs in the fallopian tube or uterine cavity secretion liquid.In addition, the embryonic cells at this time are all -around cells. Even if the exposed drugs are primitive, those with damage can be replaced by other cells and lived normally.Death rather than deformity.This effect is called full or ineffective, which means that at this stage accidentally take medicine. If the drug affects the fertilized eggs, there will be extremely early abortion.Causes impact.
(2) 3 to 8 weeks after fertilization are the teratogenic sensitive period of drugs: at this stage of various organs of the embryo (first of all, the heart, the brain, and then the eyes, the limbs, etc.)The normal differentiation of embryonic cells may cause malformations regardless of the toxicity of drug toxicity.
(3) After the fertilization, there is still a teratogenic effect: at this stage, the teratogenic effect of the drug will be significantly weakened compared to the previous stage, but it still affects the uniminaged organs, such as the reproductive system and the nervous system.During this period, after being used to be used by drugs, due to the poor function of liver enzymes and high blood and brain permeability, the fetus can be damaged, and it can also be manifested as limited fetal growth, low birth weight, and abnormal functional behavior.
Third, how much is the amount of medication?
In principle, women during pregnancy should avoid unnecessary medication.If the amount of dosage is small, short for a short time, and a single medication, the impact on the embryo is small; if large doses, long -term use or combined medication, the impact on the embryo is great.
From the perspective of eugenics, whether the risk is high or low in pregnancy, the doctor is recommended to consult a doctor, regular production examination, and regularly monitor the growth and development of the fetus.