How good are online TOLAC calculators for predicting successful VBAC?
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How good are online TOLAC calculators for predicting successful VBAC? Bottom line: Online trial of labor after cesarean section (TOLAC) calculators are fairly accurate for predicting successful vaginal birth after cesarean section (VBAC), particularly in low-risk patients. The models used at hospital admission are more accurate than those used at entry to prenatal care. However, there is no evidence to support the use of predictive models in making clinical decisions about delivery method. As these models use the old definition of arrest of dilation, lower scores likely underestimate the VBAC success rate.
Evidence Based Practice 18(8): 5-6