PI, RI Values Aortal Bifurcation Area of theIntrauterine Growth Retarded Fetuses

Overview

pregnancycomplicated by ultrasonografi cally detected intrauterine growth retardation-IUGR.Setting:
Dpt. of Obstetric and Gynaecology, Safarik‘s University and University Hospital L. Pasteur,Kosice, Slovak Republic, Obst/Gynae Dpt., Victoria Hospital, Mahé, Seychelles Republic,Indian Ocean.Subject and Method: The autors measured fetal circulation on the level of descending aortal bifurcation.The results were compared in the Group-A of 112 pregnancies complicated by mild,moderate and several praeeclampsia, eclampsia with detected IUGR, and comparative Group-Bof 106 pregnancies.Intervention: The ACUSONIC 8, ALOKA 680 SSD using transabdominal 3.5 MHz probe with collordoppler facility. The parameters were measured in weekly intervals according the clinical protocolfor management of high risk pregnancies.Subjects: There was opened a prospective comparative study of 112 risk pregnancies (Group-A) anda comparative Group-B of 106 pregnancies with normal growth of fetuses. Group-A was devided accordingclassifi cation of praeeclampsia to Subgroup-A1, mild praeeclampsia, Subgroup-A2, moderatepraeeclampsia, Subgroup-A3, severe praeclampsia and Subgroup-A4, eclampsia. Parameters of vascularresistance in descending aorta were calculated from 28th week of gestation to termination ofpregnancy and compared average values in corresponding stage in the Group-A and the comparativeGroup-B. Number of IUGR fetuses or restricted with the growth were calculated in Subgroups - A.Results: Descending aorta presents signifi cantly higher average values of PI, RI during pregnancyfrom 28th week of gestation in Group-A. There is no evidence of diastolic decrease after 34thweek of gestation in Group-A. In Group-A 52.6% fetuses were ultrasonografi caly IUGR detected orrestricted. In Subgroup-A1 of mild praeeclampsia were 20.5% of the IUGR fetuses. Subgroup-A2 ofmoderate praeeclampsia showed 51.3% and Subgroup-A3 severe praeeclampsia 87.8% of the IUGRfetuses of restricted. Three cases of eclampsia were restricted for growth .Main outcome - functional assessment of the descending aorta fl ow is the most reliable method fordifferentiation of praeclamptic and eclamptic pregnancies with suspected fetal starvation andintrauterine growth retardation.

Key words:
fetal aorta, color dopplerr, growth retardation