Flashcards in Threatened preterm labour Deck (5)
Why is Betamethasone used in threatened preterm labour?
- promotes maturation of fetal lungs
- decreased rate of respiratory distress syndrome, intraventricular haemorrhage and neonatal death
- reduction in cerbroventricular haemorrhage and necrotising enterocholitis
- does not seem to have any negative long term outcomes for mother or baby
What is the usual route and dose of Betamethasone for threatened preterm labour?
- one dose 11.4mg (2 x 5.7ml ampoules) IM, repeat 24 hours if possible
- usually offered if premature birth likely in next 7 days, lack of evidence about repeated doses
What are the most common side effects/ contraindications of Betamethasone?
may reduce fetal heart rate varibalility, fetal movements and breathing activity for 2-3 days
- may cause sever transient hyperglycaemia in women with diabetes
- contraindicated in women with a systemic infection
At what gestations are corticosteroids usually considered?
- 23 to 34 weeks gestation for women at risk of preterm labour
- insufficient evidence, but may be beneficial for later gestations, particularly for elective caesareans between 37-39 weeks