An advocate claims that the American College of Obstetricians & Gynecologists (ACOG) said VBAC after more than one prior cesarean (VBAMC) doesn’t pose an increased risk. A reader contacted me asking if this was correct. It is not. ACOG does not say that because it’s not true.
VBAC calculators have been embraced with open arms by some providers, whereas others reject them altogether. Who’s right? Trying to predict who will have a VBAC is tricky. We know some individual factors, such as having a prior vaginal delivery, are associated with higher or lower VBAC rates. By combining various factors, VBAC calculators generate a percentage that represents the best guess for an individual’s odds of having a vaginal birth after cesarean. But VBAC calculators, also called VBAC success calculators, are not always accurate and can create emotional baggage.
A VBAC study out of Canada reported, “Absolute rates of severe maternal morbidity and mortality were low but significantly higher after attempted vaginal birth after cesarean delivery compared with elective repeat cesarean delivery.” After reading the abstract, and full text, I could quickly see how this study will be misinterpreted by many, so let me walk you through it.