[Significance of ultrasound assessment of placental tissue in diagnostics of post-term pregnancy].

The purpose of this work was to determine the value of ultrasound investigation of the placental tissue in fetal assessment during post-term pregnancy. 80 pregnant women from 39 weeks gestation till delivery were examined in this long term study. The investigation was performed every 5-7 days until the labor. They were divided into three groups. The first group included 40 pregnant women with post term pregnancy, the second, 30 women with prolonged pregnancy. The control group consisted of 10 practically healthy pregnant women. Ultrasound parameters of fetal biometry such as the BPD, APTD, TTD and dynamics of placental thickness changes were analyzed. Our results suggest that the post term pregnancy can be differentiated from prolonged pregnancy by ultrasound assessment of placental tissue (monitoring of changes in placental thickness) and results of fetal biometry (BPD, APTD, TTD).