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The Timing of Adverse Events with Foley Catheter Preinduction Cervical Ripening; Implications for Outpatient Use
21 June 2013
30 September 2013
17 December 2013 (online)
Objective We sought to determine the rate and timing of adverse events that occur during preinduction cervical ripening using the Foley catheter before extrusion of the balloon and institution of oxytocin.
Study Design Using electronic medical records, we identified all women who presented for preinduction cervical ripening using a Foley catheter with a term (≥37 weeks) singleton vertex live fetus from January 1, 2006, to June 14, 2009. Women were excluded if they had had a previous cesarean delivery, gestational hypertension or preeclampsia, pregestational diabetes, rupture of membranes before induction, fetal anomaly, or antepartum stillbirth. Outcomes were cesarean delivery for nonreassuring fetal tracing, vaginal bleeding, placental abruption, or intrapartum stillbirth occurring between 2 hours after Foley catheter placement and 6 am.
Results Among 2,514 women, 1,905 met the inclusion criteria. No adverse outcomes were noted among term, singleton uncomplicated pregnancies receiving a Foley catheter for preinduction cervical ripening who met inclusion criteria (relative risk, 0.0; 95% confidence interval, 0.0–0.002).
Conclusions In a low-risk population, the use of the Foley catheter for preinduction cervical ripening was associated with no adverse outcomes. It appears to be a safe mechanism for cervical ripening and has the potential for use in the outpatient setting in a selected subset of women.
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