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* Cultural factors are behind the rise in caesarean births
* May 22, 2007
* The Australian
ARE Australian women becoming too posh to push? A West Australian study released last week shows an approximate doubling in caesarean rates between 1983 and 2003. Researchers have found higher caesarean rates among privately insured women, who are ironically at lowest risk of complications. Author Fiona Stanley suggests societal factors may be influencing women to ask their obstetricians for a caesarean delivery.
Does this mean women are driving our increasing caesarean rates - now among the highest in the Western world - or are other elements at work here?
Research from Australia and overseas does not support the "too posh to push" argument. Brisbane researchers surveyed 300 pregnant women, in both public and private care, and found that 93.5 per cent of women preferred a vaginal birth. Most of the women who preferred a caesarean had medical complications, or a previous caesarean or traumatic birth. Only one woman preferred a caesarean without a medical reason. Other studies suggest similarly small numbers.
If large numbers of women are not requesting caesareans, why are caesarean rates increasing so dramatically? To be blunt, our cultural over-confidence in medicine is largely to blame. Many in our culture, including many doctors, are convinced that surgical birth is at least as safe as normal, vaginal birth. This gives us a low threshold for caesareans, and few reasons for women and their carers to put in the effort required for normal birth.
Add in the extra convenience for obstetricians, who don't need to wait around for caesarean mothers at difficult times of the day and night and who are much less likely to be sued, and you have a recipe for full operating theatres and empty labour wards.
The problem is, caesarean delivery is not safer, and our high rates (especially among first-time mothers) may be setting a reproductive time bomb. A US study published in September 2006 found that low-risk babies born by caesarean to healthy mothers were almost three times more likely to die in the first year of life, compared to babies born vaginally. A French study, published at the same time, confirmed the risks to healthy caesarean mothers, who were three times more likely to die after a caesarean, compared with women giving birth vaginally.
These risks may be acceptable when mothers' or babies' lives are at stake. But increased risks of life-threatening complications continue for mother and baby in every subsequent pregnancy. These include placenta praevia, where the placenta overlaps the cervix, and placental abruption, where the placenta peels away prematurely. The risk of postpartum hysterectomy for catastrophic bleeding is also increased. Most of these risks accumulate with the number of caesareans. This makes the reported increase in caesarean rates among first-time mothers, most of whom will have at least one more surgical birth, particularly worrying.
It is also notable that caesareans do not offer long-term protection of the mother's pelvic floor. In contrast, vaginal birth gives babies a head start in life. The stress of being born activates the lungs in preparation for breathing, increases blood sugar for energy and stimulates virtually all body systems for the radical change in environment that birth brings.
Elective caesarean babies obviously miss this pre-birth preparation. They are consequently two to three times more likely to have breathing difficulties after birth, five to six times more likely to need artificial ventilation for severe breathing problems, and three to five times more likely to need intensive care after birth for any reason.
Caesarean mothers also miss out on natural hormonal help. In the final stages of labour, the mother experiences an immense release of oxytocin, the hormone of love, which physically helps her to give birth. Oxytocin also activates the mammalian "maternal circuit" in her brain, priming her for motherhood and reducing stress as she meets her baby. High levels of beta-endorphin - the body's natural opiate - activate pleasure and reward circuits in the new mother's brain.
When women miss these rewards and pleasures, it is not hard to guess that birth rates will drop. Research shows that women have fewer subsequent children after a caesarean birth, giving our high caesarean rates an added political dimension.
It is easy to blame women for our high caesarean rates, and the "too posh to push" label is unhelpful. What we need is a cultural respect for the ability of women's bodies in birth, and an understanding of the consequences of surgical birth.
Ninety-three per cent of us would also like some decent choices that will enhance our chances of normal birth, such as care from the normal-birth experts: midwives. And if you didn't know, pushing can be the best part.
Sarah Buckley, a mother of four and a Brisbane-based GP, is author of Gentle Birth, Gentle Mothering: The wisdom and science of gentle choices in pregnancy, birth and parenting (One Moon Press, 2005).