Changes in Doppler blood flow velocity in middle cerebral artery in response to airborne sound in low- and high-risk human fetuses

The values of Pulsatility index (Pi) registered by PHS in low- and high-risk pregnancies may be used as differential and diagnostic parameters in fetal auditory perception examination. Fetuses from pregnancies with diagnosis of diabetes demonstrated significantly higher absolute and relative changes of Pi values compared to other groups of examined fetuses.