Responses to acute hypoxemia in fetal sheep at 0.6-0.7 gestation.

  title={Responses to acute hypoxemia in fetal sheep at 0.6-0.7 gestation.},
  author={Harriet S. Iwamoto and Th. Kaufman and Lanny C. Keil and Abraham M. Rudolph},
  journal={The American journal of physiology},
  volume={256 3 Pt 2},
A majority of previous studies of fetal responses to acute hypoxemia has focused on the response of the sheep fetus greater than 120 days of gestation when many regulatory systems have been established. To assess the response of younger, less well-developed fetuses, we exposed two groups of fetal sheep (I, 84-91 days; II, 97-99 days gestational age) to acute hypoxemia by giving the ewe a gas mixture containing 9% O2 to breathe. We decreased descending aortic PO2 in both groups of fetuses [I, 24… CONTINUE READING
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