At registration of the woman on pregnancy and childbirth in clinic for women the main objective of the gynecologist is exact definition of day of pregnancy. It is very important correctly and qualitatively to observe pregnancy at the patient. There are several ways of definition of day of approach of pregnancy at the woman.
Instruction
1. Definition of day of approach of pregnancy on an ovulation and date of conception. The period of a menstrual cycle when there is a conception of the child is considered an ovulation. It, as a rule, comes at the woman in the middle of a menstrual cycle. If the menstrual cycle of the woman makes 28 days, then the ovulation can occur for the 14th day. That is day of approach of pregnancy it is possible to consider day of an ovulation at the woman.
2. Definition of day of approach of pregnancy by date of the last periods. This method, as a rule, is calculated on definition of day of childbirth, but not day of pregnancy, but also the second for it can be defined without effort too. It is necessary to subtract of the first day of the last periods three months and to add seven days. On the basis of the received date of estimated childbirth it is possible to calculate also day of approach of pregnancy.
3. Definition of day of approach of pregnancy by gynecologic survey. The experienced gynecologist at survey can precisely determine day of approach of pregnancy, proceeding from the uterus sizes if the term of pregnancy does not exceed 12 weeks.
4. Definition of day of approach of pregnancy on the basis of ultrasonography. Accuracy of this method depends on pregnancy term. The more term, the is more difficult to determine date of conception of the child.
5. Definition of day of pregnancy on the first stir. As a rule, at women who give birth for the first time the kid begins to move in 20 weeks of pregnancy. At povtornorodyashchy – in 18 weeks. Gynecologists advise to remember to the woman the first pre-natal stirs of the child and enter these data in the patrimonial card.
6. Definition of day of approach of pregnancy by means of measurement of length of a uterus. Here everything is simple. The gynecologist measures uterus length by a centimetric tape. As a rule, its length equals to pregnancy term. For example, if length of a uterus of the woman is equal to 33 centimeters, then and the term of pregnancy is equal to 33 weeks.