Relationship between placental perfusion and endocrine parameters of pregnants in cases of intrauterine growth retardation.

The placental perfusion index (PPI) measured I-27 days before delivery was compared with maternal urinary and serum oestriol (OT) and serum human chorial somatomammotropine (HCS) levels in the mothers of 24 newborns born with intrauterine growth retardation. No significant correlation between placental perfusion and the above endocrine parameters was found. Placental perfusion was not reduced in every case of intrauterine growth retardation. Mathematical analysis has shown that hit accuracy can be increased by the use of more endocrine parameters in pathological pregnancy.