| Autor: |
Kirschbaum, Thomas H., Lucas, William E., DeHaven, James C., Assali, N.S. |
| Zdroj: |
American Journal of Obstetrics and Gynecology; June 1967, Vol. 98 Issue: 3 p429-443, 15p |
| Abstrakt: |
The effects of hyperoxia at one atmosphere on placental oxygen transfer in the pregnant sheep have been studied. Fetal blood pO2does not increase proportionately to the maternal increase, but is effectively limited below values of 60 mm. Hg. Net umbilical oxygen transfer is reversibly reduced during maternal hyperoxia. The Krogh equation is inadequate to predict or explain these findings. The need for a model of placental gas diffusion employing terms dealing with blood flow rates, hemoglobin properties, concentrations, and geometric relationships is established. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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