Calculation of gestational age

How to count the duration of pregnancy? This question worries many expectant mothers. Determining the length of pregnancy by the date of conception is very simple. However, this date is not always known to a woman. Experts calculate the duration of pregnancy for several basic parameters. This level of hCG, the results of ultrasound, the date of conception and ovulation, the size of the uterus of a pregnant woman, the first movements of the fetus.

Calculation of the period of pregnancy is a responsible occupation. During any pregnancy, specialists establish its term several times. At the very beginning, at the first reception of a woman from her gynecologist, the doctor calculates the term, counting it from the first day of the last menstrual discharge. In addition, he determines the length of the uterus of the future mother. At the same time, attention is not paid to the number of days during which the monthly went. This in this case is absolutely not important. Such a formula for determining the term of pregnancy is called the method of Nehiel. It is the following equation. By the first day of the last menstrual flow, the specialist adds seven days. Then, from the resulting value, he subtracts three months. The result is the expected date of delivery of the woman. However, it should be noted that this formula will work only if the menstrual cycle of a pregnant woman is regular, and its duration is approximately twenty-eight days. If this value is less or more for one to four days, the child's date of birth can also be slightly delayed.

As was said above, the calculation of the gestational ageincludes the definition of the length of the uterus of a woman. What is it for? In general, the length of the uterus most often corresponds to the period of pregnancy. For example, if the length of the uterus is ten centimeters, the woman's gestation period is ten weeks. In order to determine this same length of the uterus, the doctor uses an ordinary centimeter tape. With this method, a doctor can monitor pregnancy and monitor the development of the fetus. In addition, this is the way doctors often manage to recognize the delay in the development of the baby in time.

Calculation of the gestation period for hCGis the determination of the level of chorionic gonadotropin in the blood of a pregnant woman. The level of hCG directly depends on the duration of pregnancy. For example, if the period is less than two weeks, then the level of this hormone is approximately 150 mU / ml. The longer the gestation period of the expectant mother, the higher the content of the hormone in her blood. However, if the doctor has determined that the level of hCG to some extent does not correspond to the actual period of pregnancy, this may indicate any pathology or serious violation. Most often, this phenomenon is typical for ectopic pregnancy or delayed development of the baby.

The most accurate way to determine the timepregnancy to date is an ultrasound examination. With the help of it you can quite accurately determine the time, consider the fetus, identify abnormalities in development. By the age of twelve weeks, every baby begins to develop absolutely individually. A doctor on ultrasound can determine the size of the fetus, its sex and much more. Calculating the gestational age in this way gives the most accurate information about the fetus.

The topic "Calculation of pregnancy" at all timesis relevant. This is quite natural, because almost every future mother wants to know everything about her unborn baby. Calculate the duration of pregnancy can and independently, if you know in advance the date of ovulation. It is worth noting that many modern women are interested in this issue since adolescence. In the pharmacy network, you can purchase a special test for ovulation, which will help to accurately calculate the date of possible conception of the child. For families who spend a lot of time planning family, this is no longer news.