Xiaomei (pseudonym) just got married, but also wants to live with her husband in the world of two, last month there were several times forgot to wear condoms, in order to prevent pregnancy, Xiaomei took emergency contraceptives the next day. Subsequently, when the unit organized the physical examination, Xiaomei did not care too much and did X-ray examination.
Unexpectedly, the menstruation actually expired before it arrived, Xiaomei bought a pregnancy test stick for self-testing, and she was pregnant. Xiaomei was a little annoyed by her previous negligence, and now the child can still want it? Will it be deformed?
"If there is no miscarriage, the baby can be wanted, and there is no direct sequelae."
He Chunni, chief physician of the Obstetrics and Gynecology Branch of the Fujian Medical Association, said that the theory of "all or none" in the first trimester is currently recognized internationally. Simply put, taking medication or taking an X-ray before 4 weeks' gestation does not produce the result of giving birth to a deformed baby that people fear.
A large number of foreign clinical evidence shows that in the first trimester (here refers to the first 4 weeks of pregnancy, that is, from the first day of the last menstruation, and the time of 28 days later) medication or X-ray irradiation, the impact on the baby in the stomach has only two results: one is that the baby is adversely affected, natural abortion, eliminated; second, the baby is not adversely affected, normal growth, continue pregnancy.
In the early stage of pregnancy (that is, before 4 weeks of pregnancy), sperm and egg combine to form a fertilized egg, only a simple cell division is carried out, forming multiple cells, but the tissues and organs have not yet differentiated, so it is impossible to form malformations on the organs, and of course, there is no need to worry about fetal malformations.
In addition, the embryo in the process of cell division, has the function of self-correction, if the cell division is smooth, the fetus will grow healthily, if the cell division is not smooth, the baby will be naturally eliminated.
Chief Physician He Chunni stressed that after taking medicine or taking X-rays in the early stages of pregnancy (within 28 days), the embryos can be retained. Many people do not know this truth, blindly flowing away the embryo, which is a pity for some women who want to have a baby. And abortion itself is also harmful to women, and even some women are likely to never be able to conceive a child after abortion.
Of course, for couples who are trying to get pregnant, if they take medicine or take X-rays, it is best to pay attention to contraception, or use a pregnancy test stick to test pregnancy before taking medicine and taking X-rays to rule out pregnancy. For insurance reasons, it is best to use contraception for 3 months after X-rays.
Is the "all or none" theory universal to all drugs?
Most of the drugs in the first trimester are suitable for the aforementioned "all or nothing" theory, but there are still some drugs that do not apply to this theory, such as ribavirin, isotretinoin (formerly known as isotretinoin), and vaccines against measles, rubella, and mumps. This is because the clearance half-life (i.e., the time it takes for the concentration of the drug to decrease in half in the blood plasma) in the human body is relatively long. That is to say, it takes a long time, sometimes even months, for the body to completely discharge the drug from the body, and at the same time, these drugs are clearly teratogenic, so not only pregnant mothers can not take it, but even women who are trying to become pregnant do not take it, otherwise the drug residue in the body will increase the risk of fetal malformations.
It should be noted that the contraceptive success rate of emergency contraceptives is actually only 80%, and the failure rate is as high as 20%, so there is still a possibility of pregnancy after taking emergency contraceptives.
There are many causes of baby malformations, and it is still necessary to conduct regular prenatal examinations and teratology examinations throughout pregnancy. Fetal development can be learned through NT ultrasound, noninvasive DNA, amniocentesis, and second-trimester teratology ultrasound examination. Therefore, during the pregnancy test, what medicine to use before pregnancy must be clear, so that the doctor can make a correct judgment.
Author Wu Zhi