[Dopplerometry in the 2nd trimester of pregnancy].

Ultrasonic device Toshiba 140 A/G was used to examine 118 women at pregnancy terms 10 to 30 weeks. Umbilical artery, intraplacental arteries, and retroplacental blood flow were assessed. All the women were divided into two groups by the results of retrospective analysis of dopplerograms. Group 1 were 47 women whose intraplacental blood flow values were higher than umbilical artery blood stream parameters. Group 2 were 71 women with the umbilical artery pulsation index higher than in intraplacental vessels. In group 2 blood clotting disorders were more incident (p < 0.01) presenting as platelet hyperaggregation and/or hypercoagulation and sometimes as increased plasma concentrations of fibrin and fibrinogen degradation products. Study of intraplacental and retroplacental blood flow helps differentiate between preclinical and compensated stages of placental insufficiency and thus timely administer the needed drug therapy with due consideration for the time of discirculatory abnormalities, predominantly uteroplacental or fetoplacental.