ISSN:
1471-0528
Quelle:
Blackwell Publishing Journal Backfiles 1879-2005
Thema:
Medizin
Notizen:
Samples of amniotic fluid and of maternal blood were obtained at abdominal hysterotomy, by amniocentesis from patients with rhesus iso-immunization and at surgical induction of labour. In 135 women whose pregnancies were beyond mid-term, the menstrual dates were accurately known.The characteristics of the cells in amniotic fluid, after staining with haematoxylin and eosin, enabled three stages of gestation—under 32 weeks, 33–36, and 37 weeks and over—to be distinguished with reasonable certainty.The samples of amniotic fluid and blood were examined biochemically. In amniotic fluid after mid-term, osmolality and sodium concentrations fell with gestational age, while levels of urea and creatinine rose. Though the levels of these factors in maternal blood remain fairly constant throughout gestation, it was possible to relate differences between levels in blood and in amniotic fluid to gestational age. Equations showing these relationships are presented.The results were not influenced by the severity of haemolytic disease in the fetuses.
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1111/j.1471-0528.1971.tb00308.x
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