title: Nitrous oxide elimination by the newborn.
abstract: The elimination of nitrous oxide by ten infants whose mothers had received 50% nitrous oxide in oxygen and enflurane 0.6-1% during general anaesthesia for Caesarean section was studied. The concentration of nitrous oxide detected in end-expired gas ranged from 1 to 4 vol% (mean 1.9 vol%). These levels are too low to produce significant diffusion hypoxia in vigorous neonates. However, a minority of infants may be adversely affected and it is recommended that oxygen-enriched air be administered to infants whose mothers have received nitrous oxide.
mesh_terms: D000769:Anesthesia, Inhalation / Q000009:adverse effects; D000773:Anesthesia, Obstetrical / Q000009:adverse effects; D002585:Cesarean Section; D005260:Female; D006801:Humans; D007231:Infant, Newborn; D008431:Maternal-Fetal Exchange; D009609:Nitrous Oxide / Q000009:adverse effects / Q000378:metabolism*; D011247:Pregnancy
chemical_list: D009609:Nitrous Oxide