[Placental perfusion, endocrine parameters of pregnancy and cardiotocographic non-stress tests in cases of intrauterine retardation].

The data of 24 intrauterine growth retarded newborns were analysed retrospectively. The urine estriol, the placental perfusion, and the serum HCS concentrations were determined simultaneously 1 to 27 days before delivery, and cardiotocographic non stress test were also made. There was no correlation between the placental perfusion and endocrine parameters of the placentas. The conclusion is that, the decreased perfusion of the placenta can not be found in each case of intrauterine retardation. The diminished perfusion of the insufficient placenta is more characteristic in toxemic cases. The field of information of the placental perfusion test and the non stress cardiotocography are very near to each other. When the non stress test was pathological, the placental perfusion was always decreased. Probably the first changes in the action of the fetal heart are caused by the hypoxia which is the consequence of the diminished perfusion of the placenta.