While the risk of birth trauma with vaginal delivery is higher with increased birth weight, cesarean delivery reduces, but does not eliminate, this risk. In addition, randomized clinical trial results have not shown the clinical effectiveness of prophylactic cesarean delivery when any specific estimated fetal weight is unknown. Results from large cohort and case-control studies reveal that it is safe to allow a trial of labor for estimated fetal weight of more than 4,000 g. Nonetheless, the results of these reports, along with published cost-effectiveness data, do not support prophylactic cesarean delivery for suspected fetal macrosomia with estimated weights of less than 5,000 g (11 lb), although some authors agree that cesarean delivery in these situations should be considered.
According to ACOG, prior low transverse c/section is not a contraindication to induction (other than the use of misoprostol [Cytotec]) so a foley balloon or pitocin may be used safely in these women. The problem arises when a practitioner does not believe in doing inductions on women with prior c/section. Despite the evidence and the ACOG clinical guideline the reality is that many doctors will just not want to deal with it.
Routine continuous electronic fetal monitoring (EFM), compared with intermittent auscultation, increased the likelihood of instrumental vaginal delivery and cesarean section and failed to reduce rates of low Apgar scores, stillbirth and newborn death rates, admissions to special care nursery, or the incidence of cerebral palsy.
“Since 1980, the use of EFM has grown dramatically, from being used on 45% of pregnant women in labor to 85% in 2002,” says George A. Macones, MD, who headed the development of the ACOG document. “Although EFM is the most common obstetric procedure today, unfortunately it hasn’t reduced perinatal mortality or the risk of cerebral palsy. In fact, the rate of cerebral palsy has essentially remained the same since World War II despite fetal monitoring and all of our advancements in treatments and interventions.”