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Biomedical subjects

J M Beazley

Publications and source records attributed to J M Beazley.

At least 37 records · Page 2Linked to original sources

Maintenance of labour.

In 160 women large but variable amounts of intravenous oxytocin were needed to induce labour within a reasonable time interval to 5 cm cervical dilatation. Thereafter 7 mU of oxytocin/min would maintain progress. Since large maintenance doses may cause obstetric problems it is recommended that a maintenance regimen should be used once labour has progressed to this stage.

Cervix Uteri↗

Neonatal serum bilirubin levels following the use of prostaglandin E2 in labour.

A prospective study of 447 labours and the resulting neonates failed to reveal a significant difference between the mean serum bilirubin concentrations on the third and sixth day following spontaneous, accelerated or induced labour. A similar incidence of neonatal jaundice (bilirubin concentrations of 10 mg/100 or more) was found in the studied groups. However, there was a tendency for neonates born after accelerated or induced labour to have slightly higher bilirubin levels than those born after spontaneous labour. No strong dose dependent effect on the level of bilirubin concentration following Prostaglandin E2 induced labour was demonstrated.

Aging↗

Neonatal hyperbilirubinaemia following the use of oxytocin in labour.

A prospective study of 1353 labours and the relevant newborn failed to reveal any significant difference between the incidence of neonatal hyperbilirubinaemia (defined as a level of 12 mg. or more per 100 ml.) following spontaneous labour, and after labour induced or accelerated by oxytocin. The incidence of unexplained neonatal hyperbilirubinaemia after spontaneous labour was 6-3 per cent. Following induced labour however there was a highly significant (P less than 0-001) association between the mean total dose of oxytocin used for induction and the incidence of neonatal hyperbilirubinaemia. The proportion of babies who developed hyperbilirubinaemia increased in direct relation to the total dose of oxytocin used for the induction. In this series the incidence of hyperbilirubinaemia increased sharply when the total dose of oxytocin exceeded 20 units as it did hyperbilirubinaemia and birthweight, or duration of spontaneous labour. When labour was induced, however, the proportion on newborn babies with hyperbilirubinaemia increased with the duration of labour. The significance of these findings is discussed.

Bilirubin↗