[Biochemical examinations of amniotic fluid in arterial hypertension and delayed intrauterine fetal growth. III. Acid-base equilibrium and ionic composition].

The study was carried out on 23 samples of amniotic fluid taken (by amniocentesis) between 35th and 39th week of pregnancy from 23 pregnant women with arterial hypertension (13 cases of hypertension induced by pregnancy, 5 cases of primary hypertension and 5 cases of hypertension accompanying renal diseases). Seven women undergoing the study gave birth to newborns with symptoms of delayed intrauterine growth below 10 centile (group examined), 16 mothers gave birth to eutrophic babies (control group). In the amniotic fluid of the two groups compared the authors found similar values of acid-base equilibrium and concentrations of potassium, sodium, total calcium, ionized calcium and inorganic phosphorus. Thus delayed intrauterine foetal growth is not manifested by changed values of the biochemical indicators examined in the amniotic fluid.