In normal pregnancy pregnancy test is always associated with the appearance of fetal movements, which the mother feels. The fetal response to stimulation is more active, the longer the gestation period.
Modern studies show that cardiotocography does not have significant advantages over conventional fetal auscultation by the obstetric stethoscope.
Fetal breathing is carried out by gas exchange through the utero-placental system through diffusion. There is an absorption of oxygen from the mother's blood and the release of metabolic products into it.
In maternity patients at high risk, it is necessary to perform a comprehensive assessment of the fetus with the help of cardiotocography, amnioscopy, determination of the nature of labor activity by methods of external and internal hysterography, determination of fetal and parenteral fetus, pH determination of amniotic fluid.
Within 10 minutes, the fetal heart rate is counted or recorded during pauses and during the bout with an interval of 2 minutes. Further for 15 minutes, a continuous inhalation of 100% oxygen concentration is carried out using a sealed mask.
Discussions about the role and significance of the preliminaries are held in literature long ago. A great deal of attention to this problem is due to its serious importance for preventing the occurrence of abnormalities of labor.
The pathological preliminar period is characterized by the following clinical signs: painful, disturbing diurnal rhythm of sleep and wakefulness, alternating in strength and sensation of contraction.
The data available in the literature on the contractile activity of the uterus in the preliminar period are few and contradictory. This, probably, explains the data of the clinic.
For practical obstetrics, the special features of the subsequent course of labor are important, depending on the duration of the preliminaries preceding them.
Until now, there is no single tactic for managing pregnant women with preliminaries. Many domestic obstetricians believe that during the preliminar period, the use of tranquilizers, analgesics, antispasmodics, estrogens is indicated.