1, baby, because the newborn has respiratory insufficiency, the eustachian tube is short, and the nasopharynx is often blocked by mucus, so there is no swallowing action. The air pressure changes greatly when the plane takes off and lands, so it is difficult to keep the pressure balance inside and outside the eardrum. When the plane is cruising at high altitude, lack of oxygen is not suitable for babies. Many airlines stipulate that babies must be born after 14 days before boarding the plane, so as to avoid respiratory organs being unable to adapt.
2, pregnant women, it is recommended to avoid flying in the first trimester and more than 7 months of pregnancy. Many obstetricians and aviation doctors disapprove of pregnant women flying in the first trimester because they are prone to miscarriage during this period; However, premature delivery, placental abruption, hypertension, phlebitis and accidental fall or collision are prone to occur after more than 7 months of pregnancy, which will increase the probability of accidents of the mother or fetus.
3, the elderly, generally speaking, there is no cardiovascular disease, such as high blood pressure, heart disease, the elderly can fly. However, when you have the above-mentioned diseases and have to fly, experts believe that you can try to climb a flight of stairs. If there is no discomfort, it should be fine; However, the specific situation still needs a doctor's evaluation, and the drugs should be prepared in advance and taken on time.
4. Some diseases that need urgent medical treatment. These diseases need urgent medical treatment, such as shock, coma, intracranial hypertension, craniocerebral injury and so on. Be careful if you need to fly. It is best to take the flight after proper treatment and permission from the doctor. After all, once there is an emergency, the first aid resources on the flight can only play some basic roles!