title: Maternal oxygenation during normal labour.
abstract: Arterial oxyhaemoglobin saturation (SaO2) was monitored continuously during normal labour in 33 healthy parturients receiving pethidine and nitrous oxide for analgesia. Sixteen (49%) had episodes exceeding 10 s duration when SaO2 was less than 90% (mean 83.7%, range 89-60%). Two women had multiple episodes of profound hypoxia with SaO2 less than 70%.
authors.affiliation: University Department of Anaesthesia, Leicester General Hospital.
authors.forename: P N
authors.initials: PN
authors.lastname: Reed
authors.forename: A D
authors.initials: AD
authors.lastname: Colquhoun
authors.forename: C D
authors.initials: CD
authors.lastname: Hanning
mesh_terms: D005260:Female; D006801:Humans; D000860:Hypoxia / Q000097:blood*; D007747:Labor Stage, First; D007748:Labor Stage, Second; D008614:Meperidine; D009609:Nitrous Oxide; D007744:Obstetric Labor Complications / Q000097:blood*; D010108:Oxyhemoglobins / Q000032:analysis*; D011247:Pregnancy
chemical_list: D010108:Oxyhemoglobins; D008614:Meperidine; D009609:Nitrous Oxide