Swedish reseachers have developed a test to predict the likelihood of a mother being unable to deliver vaginally. This could reduce or stop women labouring for extensive lengths of time and then needing an emergency c-section for her own, as well as her baby’s, health.
The test measures the level of lactic acid in the amniotic fluid. Like other muscles, the uterus produces lactic acid when it has to work hard. However, high levels of it actually inhibit contractions.