Open AccessFREE CALCIUM ION CONCENTRATION IN PREGNANCY
Author(s) -
FoghAndersen Niels,
SchultzLarsen Peter
Publication year - 1981
Publication title -
acta obstetricia et gynecologica scandinavica
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.401
H-Index - 102
eISSN - 1600-0412
pISSN - 0001-6349
DOI - 10.3109/00016348109158137
Subject(s) - medicine , pregnancy , calcium , endocrinology , calcium metabolism , obstetrics , biology , genetics
. 302 samples from 22 normal pregnancies were frozen and kept for the analysis of free calcium ion concentration [Ca 2+ 7.4 at 37°c and pH 7.40, after equilibration with CO 2 . Individual regressions were performed, and the concentration was found to increase slightly but significantly (5%, p<0.005) with the progress of the pregnancy. This increase excludes hypocalcemia as the cause of parathyroid overactivity during pregnancy, and a higher set point of the parathyrin (PTH) secretion is suggested.