Childbirth is a complex physiological process, during which the contents of the uterus (fetus, amniotic fluid, placenta and membranes) are expelled.
The method of two-channel internal hysterography allows prediction of labor for the whole process of birth. In this case, it is sufficient to record intrauterine pressure in 2 channels within 30-60 minutes from the onset of labor, and then compare the recordings of intrauterine pressure in the region of the bottom and the lower segment of the uterus
Studies of the pH of amniotic fluid were conducted in 160 maternity wards during the normal course of the birth act. The duration of labor in primiparous animals was 12 h 42 min + 31.7 min, in repetitious 6 h 05 min ± 4.85 min.
Births that complete pregnancy are the stage in which the responsibility for a successful outcome for the mother and fetus is borne by the doctor of the maternity hospital.
The data of the literature testify to the undoubted dependence between the state of the newborn and the parameters of the acid-base state of its blood, therefore, when determining the fetal condition during childbirth, the results of the analysis of blood taken from the skin of its head are crucial, and the acidosis can be recognized at any stage of childbirth .
In the process of normal delivery in the fetal physiological state a gradual increase in the frequency of meconium in the amniotic fluid occurs, but there are no significant differences between the groups.
There are four moments of the mechanism of birth. The first moment is the bending of the head; the second is the internal rotation of the head; the third is the extension of the head (the region of the suboccipital fossa is the fixation point - hypomochlion); the fourth is the inner turn of the trunk and the outer turn of the head.
In modern obstetrics, an important place is given to artificial rhizopoiesis. It is believed that the proportion of provoked births should not exceed 10%.
In recent years, interest in programmed birth has increased again. In a number of cases, the artificial delivery is performed on time without medical indications, when the fetus has reached full maturity, and there are no signs of spontaneous delivery. Such preventive labor excitement in normal pregnancy is called programmed delivery.
Anomalies of labor activity - an urgent problem of modern scientific and practical obstetrics. The importance of this issue is due primarily to the fact that this pathology is one of the main causes of serious complications in both the mother and the child.