[Doppler examination of fetal cerebral circulation in pregnancies complicated with idiopathic oligohydramnios].

OBJECTIVE

The aim of this study was to investigate the cerebral circulation in pregnancy complicated with oligohydramnios.

MATERIALS AND

METHODS

Comparative clinical studies evaluated Doppler curve middle cerebral artery separately in proximal (basal, MCA-P) segment and distal (cortical, MCA-D) anatomical segment. Doppler velocity waveforms analysis was performed on the base of systolic (Vs), mean (Vm) and end-diastolic (Ved) velocity of the blood wave, systolic/diastolic ratio (S/D), resistance index (RI) and pulsatile index (PI). Results were compared in the group with oligohydramnios (15 pregnancies) and the group with normohydramnios (15 pregnancies).

RESULTS

We found statistically significant correlation between S/D MCA-P, S/D MCA-D, RI MCA-P. Other parameters did not show statistically significant differences. Especially we did not find statistically significant differences of parameters of the fetal cerebral circulations between pregnancies with oligohydramnios and with normohydramnios.

CONCLUSIONS

On the basis of this correlation, the following conclusions were drawn: 1/ pregnancies complicated with oligohydramnios do not change fetal cerebral circulation, 2/ idiopathic oligohydramnios does not qualify for group of high risk pregnancy.