Human umbilical arterial and venous progesterone concentrations: effect of fetal sex, weight, and mode of delivery.

@article{Dawood1977HumanUA,
  title={Human umbilical arterial and venous progesterone concentrations: effect of fetal sex, weight, and mode of delivery.},
  author={M. Yusoff Dawood and F Helmkamp},
  journal={Obstetrics and gynecology},
  year={1977},
  volume={50 4},
  pages={450-3}
}
Umbilical venous and umbilical arterial progesterone concentrations were determined in 99 pregnancies by radioimmunoassay. The mean +/- SE plasma progesterone in the umbilical vein was 1295 +/- 73 ng/ml, and in the umbilical artery it was 520 +/- 38 ng/ml with an arterio-venous difference of 775 +/- 58 ng/ml and a vein:artery progesterone ratio of 3.6 +/- 0.3. The secretion rate of progesterone into the fetal compartment was calculated to be 84 mg/24 hr. There was no significant difference in… CONTINUE READING