title: [Characteristics of cardiac activity, respiratory function of fetal blood and morphological structure of placenta in older primigravidae].
mesh_terms: D000136:Acid-Base Equilibrium; D000328:Adult; D000367:Age Factors; D005260:Female; D005318:Fetal Heart / Q000502:physiology*; D006334:Heart Function Tests; D006801:Humans; D006863:Hydrogen-Ion Concentration; D008423:Maternal Age; D008875:Middle Aged; D010100:Oxygen / Q000097:blood*; D010101:Oxygen Consumption; D010920:Placenta / Q000098:blood supply / Q000166:cytology*; D011247:Pregnancy; D011296:Prenatal Diagnosis; D014599:Uterus / Q000098:blood supply
chemical_list: D010100:Oxygen
vernacular_title: Osobennosti serdechnoĭ deiatel'nosti, dykhatel'noĭ funktsii krovi ploda i morfologicheskogo stroeniia platsenty u pozhilykh pervorodiashchikh