Early versus late combined amniotomy and oxytocin after mechanical cervical ripening-a secondary analysis of a randomized controlled trial.
Joanna Dakwar Shaheen, Sharon Einav, Rami Sammour et al.
✦ AI-curated · Sources linked
In 30 seconds
This secondary analysis of a randomized controlled trial compared early versus later amniotomy and oxytocin after cervical ripening balloon removal in 197 patients undergoing labor induction. Early initiation, defined as within 2 hours, was associated with a shorter interval from balloon removal to delivery than initiation after 2 hours: 9 ± 6.7 vs.17 ± 11.9 h, p < 0.001. Cesarean delivery rates and other reported maternal and neonatal outcomes were similar between groups. Because timing groups were formed for this secondary analysis rather than randomized, the findings indicate an association and may be affected by latent confounding.
Key findings
- Time from balloon removal to delivery was 9 ± 6.7 vs.17 ± 11.9 h for early and later initiation, respectively (p < 0.001).
- Cesarean delivery rates were similar between the early and later groups.
- Other reported maternal and neonatal outcomes were similar between groups.
Why it matters
The findings suggest that starting amniotomy and oxytocin soon after balloon removal may shorten the induction-to-delivery interval without an observed difference in cesarean delivery or other reported outcomes. However, the comparison was not randomized by timing, so differences in treatment characteristics or unmeasured factors could explain some of the association.
What to keep in mind
This was a secondary analysis in which timing groups were not randomized; latent confounding remains possible. The early group included 34 patients, compared with 163 in the later group.