Abstract

Objective: to assess and describe the characteristics of the changes in the cervix uteri according to the data of transvaginal ultrasound conducted in lying and standing body positions in women with the physiological course of pregnancy. Material and methods. Dynamic transvaginal ultrasound of the cervix uteri was performed in two body positions (lying and standing) in 30 women with the physiological course of pregnancy and subsequent urgent labor. Results. The changes in the length of the isthmic and cervical region occur due to different anatomical segments, at different time and at different velocity. The changes in the utero-cervical angle related to the changes of body positions at the term of 28 weeks of gestation are associated with the formation of the lower segment and redistribution of pressure on it by the presenting part of the fetus. Shortly before birth, the cervix uteri is centralized. The changes in body positions of patients does not lead to significant changes in the frequency of occurrence of T- and Y-shaped internal os. Conclusion . The reference values of the parameters of the cervix uteri found by transvaginal ultrasound in the standing position were revealed and described in the women with the physiological course of pregnancy.

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