Fetal Circulatory Variation in an Acute Incident Causing Bradycardia

Figure 1

Umbilical artery (a), umbilical vein (b), middle cerebral artery (MCA) (c), and ductus venosus (d) Doppler velocimetry during the deceleration period and Doppler velocimetry of these vessels at normal heart rate, accordingly (e, f, g, h).