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[Uterine contractile activity in parturients of a group at risk for prolonged pregnancy prepared for labor by acupuncture reflexotherapy].

Prenatal preparation by using acupuncture was studied for effects on the clinical course and uterine contractility in 181 parturients who were at a high risk for prolonged pregnancy. With prenatal acupuncture, labor occurred in time in most parturients. Seven (3.8%) labors were delayed, 4 babies were born having signs of postmaturity. Antenatal amniotic fluid discharge was seen in 19% of the parturients, uterine inertia occurred in 19.8%, Cesarean deliveries were observed in 24 parturients. Internal tocographic assessment of uterine contractility revealed higher amplitudes, which contributed to the favorable course of labors. Acupuncture favored term labor in the pregnant females, the pattern of uterine contractility showed no changes during the delivery.

Acupuncture Analgesia↗

[Labor pain from the viewpoint of the modern knowledge of pain physiology].

The valuation and treatment of labor pains require complete morphological and anatomical informations about the neuronal systems concerned. A review is given about modern model conceptions in perception, modulation and transmission of pain, based on the latest knowledges in the pain research. The identification of central control- and modulation systems is very important for the actual theory of pain. Pains and also labor pains are caused as a result of complicated nerval connective principles with slim relation to endocrinological system and are also connected with a lot of individual psychical influences. Essentially, four functional stages are passed from the place of nociceptive perception to the registration in the telencephalon. These are depicted in consideration of numerous afferent and efferent, biochemical and hormonal, stimulated and inhibited modulation effects. Various pain inhibitory mechanisms, such as biogenic amines and endogenous opioids are discussed by reference to interesting aspects in new therapeutical possibilities in treatment of pain and also of labor pains.

Afferent Pathways↗

Progression of labor pain in primiparas and multiparas.

The purpose of this study was to systematically describe the dimensions of pain during the progression of labor in primiparas and multiparas. Fifty primiparas and 88 multiparas were assessed for pain when the cervix was dilated 2-4 cm, 5-7 cm, and 8-10 cm. The sensory component of in-labor pain was more severe than the affective component for both primiparas and multiparas throughout labor and delivery except during Stage III when primiparas reported more intense affective pain. Primiparas reported more intense sensory pain in Stages I and III and more intense affective pain in all three stages of labor than the multiparas even though they consumed significantly more pain medications than the multiparas.

Adolescent↗

Location of placenta and clinical course of labour.

The results of studies on 2396 women are presented. Relations were found between location of placenta and 'ripeness' of uterine cervix, duration of labour, prognostic value of intrauterine pressure, complications of the third stage, fate of the newborn and success of induction of labour. The authors arrived at the conclusion that attachment of the placenta to the fundus uteri may be considered an unfavourable location causing an increase in the number of different deviations from normal labour.

Apgar Score↗

[Prostaglandin E and F content of the amniotic fluid in various stages of beginning labor].

Levels of prostaglandin (PG) E- and F-equivalents determined radio-immunologically in amniotic fluid from women with uncomplicated pregnancies at term were related to the cervical state and the onset of regular labour. The lowest levels of both PG E- and F-equivalents with about 400 pg/ml were measured in the group with an immature cervix. An about twofold increase of both PG's appears characteristic for the cervical ripening, whereas the readiness for the initiation of regular uterine contractions is apparently indicated by further raises of PG F2 alpha. At the beginning of parturition distinct elevations can be registered for both PG's with a dominance of PG F. From their dynamics in amniotic fluid conclusions about different functions of PG's during the period preceding labour can be drawn.

Amniotic Fluid↗

Transition from latent to active labor.

The transition from the latent to the active phase of labor, as defined by Friedman, was studied in all noncomplicated patients over a four-year period. Mothers studied were in spontaneous labor with a singleton fetus in the vertex position with intact membranes at admission. The independent variables were the parity and vaginal examination data, and the dependent variable was the rate of cervical dilation. The transition from latent to active labor was recorded and stratified by the cervical dilation where it occurred in a sample population consisting of 1060 nulliparous and 639 primiparous or multiparous women. There were no differences between nulliparous and multiparous patients. Less than 50% of labors became active by the time the cervixes had reached 4-cm dilation. By 5 cm, 74% of labors were active. However, when protracted and arrested labors were eliminated, 60% of the patients had reached the latent-active transition by 4 cm and 89% by 5 cm. We concluded that once a normal patient has reached 5 cm, she should be in the active phase of labor. If not, there is a high probability of labor dystocia.

Cervix Uteri↗

[Evaluation of cervix dilatation in the active phase].

This paper describes a prospective study of 50 primiparae and 50 multiparae, whose duration of cervical dilatation in the active phase has been investigated. The rate of cervical dilatation after 3 cm was found at 1.93 cm/h in primiparae and nearly one and a half times faster in multiparae. Friedman's S-shaped curve of cervical dilatation could not be confirmed.

Cervix Uteri↗

The phases and stages of labour.

During recent decades the understanding and practice of obstetric care have evolved at a rapid pace. Consequently definitions that have promoted the principles of practice have had to be greatly modified or discarded. My thesis is that the time has come for the concepts of phases and stages of labour to be abandoned on the grounds that they now retard, rather than advance, progress in the care of the labouring woman.

Female↗