Maternal oxygenation during normal labour
Reed, P.N.; Colquhoun, A.D.; Hanning, C.D.
British Journal of Anaesthesia 62(3): 316-318
1989
ISSN/ISBN: 0007-0912 PMID: 2930673 Document Number: 346545
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 < 90% (mean 88.7%, range 89-60%). Two women had multiple episodes of profound hypoxia with SaO2 < 70%.
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