[Transvaginal ultrasound in evaluation of the uterine cervix during pregnancy].

127 pregnant patients between 20 and 37 week of gestation were studied. Cervical estimation was done by using transvaginal ultrasonography. An accurate estimation was possible in all investigation patients. Statistically significant distinctions in uterine cervical length during pregnancy progress were noticed (p < 0.05). However, differences in cervical with were not perceived (p = 0.3). Interdependence of the duration of pregnancy upon the cervical length and width were calculated. Obtained findings could be applicable in preterm labor prognosis.