Fetal breathing movements and maternal hyperoxia in the growth retarded fetus.
The effect of fetal breathing movements (FBM) of maternal breathing of 50% oxygen was examined. The procedure caused a two-fold rise in maternal arterial Po2 and did not alter FBM in normal pregnancy. In pregnancy complicated by intrauterine growth retardation (IUGR) a substantial increase in the incidence of FBM was recorded during hyperoxia (control 29.8 +/- 3.9%, hyperoxia 68.2 +/- 3.6). No such change was observed in pregnancies where IUGR was suspected but not proven at delivery.
D005260:Female; D005317:Fetal Growth Retardation / Q000503:physiopathology*; D005333:Fetus / Q000503:physiopathology*; D006801:Humans; D008431:Maternal-Fetal Exchange; D009068:Movement; D010100:Oxygen / Q000097:blood; D010102:Oxygen Inhalation Therapy; D011247:Pregnancy; D012119:Respiration
D010100:Oxygen