Maternal hypocapnia and the foetus at section.
D002245:Carbon Dioxide / Q000097:blood*; D005260:Female; D006801:Humans; D008431:Maternal-Fetal Exchange; D010100:Oxygen / Q000097:blood; D010313:Partial Pressure; D011247:Pregnancy; D011248:Pregnancy Complications; D014470:Umbilical Cord / Q000032:analysis
D002245:Carbon Dioxide; D010100:Oxygen