Fig. 3From: Early-onset fetal growth restriction treated with the long-acting phosphodiesterase-5 inhibitor tadalafil: a case reportThe parameters of the Doppler examination for fetal arteries and veins. DV-a (rev) reverse flow of ductus venosus a-wave, MCA-PI middle cerebral artery pulsatility index, PI pulsatility index, UA-PI umbilical artery pulsatility index, UV umbilical vein, W weekBack to article page