in eleven near-term lambs ( 132 to 146 days of gestation ) , fetal arterial oxygen tension ( pao2 ) increased from 25 +/- 1 to 55 +/- 6 torr ( mean +/- se ) , which increased the proportion of right ventricular output distributed to the fetal lungs from 8 +/- 1 to 59 +/- 5 % .
C0015965
fetal
C1517163
fetal