Effect of Alcohol Exposure on Fetal Cerebral Artery Flow Velocity WaveformsConsidering that fetal cerebrovascular effects of alcohol may be localized to a specific brain region, we assessed flow velocity waveforms in anterior versus middle cerebral arteries (ACAs and MCAs). There was an overall trend for reduced PSV during the time of alcohol intoxication for both cerebral vessels. However, a decrease in PSVreached statistical significancefor ACAs during the second exposure and for MCAs during the first exposure (Figure 2). Although both arteries exhibited a trend toward decreased PI during the third alcohol exposure, statistical significance was reached only for ACA (Figure 2). Longitudinal evaluation of ACAs and MCAs throughout the second (measurements obtained immediately before the infusion of control or alcohol drink) and third trimesters revealed a progressive increase in PSV accompanied by a decrease in PIs. Despite thefact that alcohol intoxication was accompanied by changes inthe fetal cerebral arteries (Figure 2), we did not detect significant differences between groups throughout the gestation (Figure 3). The only exception was a statistically significant drop in the ACA PI around 100 days of gestation, yet this change was not present at later stages of gestation (Figure 3A).