What can ultrasound check? Is ultrasonic pregnancy test harmful?

What can ultrasound check? Is ultrasonic pregnancy test harmful? 1, what is ultrasonic flaw detection?

Ultrasound is a sound wave. Sound waves come from the probe and enter the body. When it comes into contact with human organs in the human body, such as liver and kidney function or the fetus in the pregnant belly, it will bounce back. This bounced sound wave is converted into an interface by a computer, and the appearance of a fetus and human organs appears on the display screen. This is the so-called ultrasonic examination.

2. What can be checked by ultrasonic flaw detection?

Ultrasonic examination is mainly used to check whether the fetal growth is normal and whether there are defects; It is used to calculate the gestational age of the fetus, especially for women who are forbidden to have these menstruation or can't remember the date of the last menstruation in the late Qing Dynasty, and can accurately determine the delivery period in the early, middle and late pregnancy; At the end of pregnancy, it can also help the weight of the possible fetus and master whether the fetus has symptoms of hypoxia; In addition, in the early pregnancy, if there are abnormal situations such as vaginal bleeding or stomachache, ultrasound examination can also determine whether the fetus is in the uterus or in both fallopian tubes (that is, biochemical pregnancy), and whether the fetus is still growing and developing healthily again. At the end of pregnancy, check whether the long part of the embryo is normal.

3. Is ultrasound harmful to pregnant mother and fetus?

Through years of scientific research by biologists, it is not found that ultrasound examination causes adverse harm to pregnant mothers or fetuses. The reverse is also good. For example, if you find that the pregnant fetus is abnormal and abnormal, then you should quickly induce labor, and there is no need to get pregnant again. Ultrasound examination is generally harmless to pregnant mothers and fetuses. As long as something called "probe" is placed on the pregnant woman's stomach, the doctor will move the probe back and forth in the abdomen and carefully observe the interface on the display screen. You can check it again in a few weeks if necessary. Naturally, ultrasound examination should be minimized in the early stage of pregnancy. Because the fetus is too small, its structure is not clear. Therefore, if there is no abnormality, it is best to wait until 20 ~ 24 weeks of pregnancy.

4. Is the ultrasound examination to better understand the birth of boys and girls?

Not exactly. Article 35 of the Population and Family Planning Law of the People's Republic of China requires: "It is forbidden to use ultrasound technology and other non-medical methods to identify the sex of the fetus; It is forbidden to terminate pregnancy with medically unnecessary alternative manpower. " So there is no need to embarrass the doctor when doing B-ultrasound examination. If the doctor tells you that he is in violation of the regulations, he should bear the legal basis.

Medical identification of fetal sex is necessary, which is mastered by doctors. If there is any reason, the doctor will tell you what to do. For example, some genetic diseases are often mainly manifested in boys, such as malnutrition and muscular dystrophy. Boys often get sick, while girls seldom get sick. People who have had this experience in a big family can be tested in advance before the newborn is born. If it's a boy, it's best not to. Because this disease cannot be treated at this stage, it is generally difficult to live past 20 years old.