Pregnancy in women having chronic renal insufficiency and undergoing hemodialysis is a rare event with a poor outcome. This is the 1st case in whom pre- and posthemodialysis fetal renal artery Doppler flow velocimetry was used in conjunction with fetal blood sampling which was performed to assess fetal karyotype and blood chemistry. Uteroplacental Doppler measurements were also performed, and a close correlation between maternal-fetal blood creatinine and urea nitrogen levels and fetal renal, umbilical, and uterine artery resistance indexes was observed.