In the event of renal damage with tenofovir, or in individual patients (for a certain period of time) who cannot tolerate it, it is possible to temporarily switch to entecavir for a few months, which is the best buffer drug for tenofovir. Even if there has been lamivudine resistance, it is important to protect entecavir’s own resistance sites from mutation. The most outstanding advantages of tenofovir are the strongest antiviral potency and the many beneficial benefits derived from the clearance of replicating virus. The low placental state is just our uniform diagnosis of placental position within 3cm from the endocervix, but everyone’s situation is different, some people’s are close to the endocervix, some are covering the endocervix, and some still have some distance. In any case, as long as he does not bleed, do not worry too much, and the smaller the fetus the higher the chance of low placenta, the greater the fetal development the less the chance of low placenta, this is because the larger the fetus the greater the growth of the uterus, the greater the distance between the placenta and the endocervix will increase, which will reduce the risk of bleeding. Through dynamic observation 90% of placental hypoplasia will be normal after 28 weeks (and placenta more than 3 cm from the inner cervical opening), only very few are in hypoplasia or completely covered. If you rest well, if the pregnant mother has a dry stool, when you make a strong effort to relieve the stool, it will increase the abdominal pressure and make the fetus press the placenta tissue at the end of the cervix, which is most likely to cause bleeding. This is much scarier than doing heavy physical labor, which also increases abdominal pressure, but his stress surface is the entire abdominal cavity and lower limbs, and bleeding is more common. Therefore, if you pay attention not to increase the abdominal pressure and reduce the pressure on the placenta at the end of the cervix, but also to regulate the physical labor and diet structure, you can prevent the occurrence of bleeding, and the usual regular and natural life will not have much effect. However, as long as there is active bleeding, bed rest is necessary to ensure that the movement does not lead to prolonged bleeding and increased bleeding, and if the amount of bleeding is too much, you must go to the hospital. If it is always bed rest not only pregnant mothers develop lazy habits, so that the fetus also has no opportunity to contact the outside world and become lazy, is not conducive to the healthy development of the fetus, in fact, contact with nature is the best fetal education.