Resumen

MARUJO, Ana Teresa et al. Cervical ripening with Foley catheter: a tertiary center experience. Acta Obstet Ginecol Port [online]. 2017, vol.11, n.2, pp.84-90. ISSN 1646-5830.

Overview and Aims: In the presence of an unfavorable cervix, pre-induction cervical ripening is an important part of the labour induction process. Both mechanical and pharmacological methods are available for this purpose, with Foley catheter being the most commonly used mechanical method. We intend to describe the efficacy of Foley catheter for cervical ripening and to describe maternal and neonatal outcomes. Furthermore, we analyze the same results in high risk subgroups. Study Design: Retrospective observational study Population: 44 women with a singleton pregnancy, live fetus, cephalic presentation, intact membranes, with medical indication for labour induction and Bishop score ≤6. Methods: Medical records were reviewed and analyzed. Foley catheter was introduced until expulsion or for a maximum of 24 hours. Cervical ripening was considered effective when Bishop score after catheter was ≥8. Maternal outcomes considered were tachysystole, chorioamnionitis, post-partum bleeding and uterine rupture. Neonatal outcomes assessed were Apgar score, need for hospitalization in neonatal care unit and days of hospitalization. In the subgroup analysis, we divided the risk population in two subgroups: Group 1- Fetal growth restriction and/or oligohydramnios; Group 2- Previous caesarean section. Results: 72.7% of the labour inductions were indicated by maternal or fetal disease. The efficacy of cervical ripening was 65.9% and vaginal delivery rate was 63.6%. Regarding maternal and neonatal outcomes, there were only two cases (4.5%) of clinical chorioamnionitis. In subgroup analysis, the efficacy of cervical ripening and vaginal delivery rates were, respectively, 60.9% and 69.6% in Group 1 and 72.2% and 50% in Group 2.There was one case of chorioamnionitis in each subgroup. Conclusions: Foley catheter is an effective and safe method for cervical ripening. Due to its low association with adverse outcomes, it appears to be a good alternative for high-risk populations

Palabras clave : Labour induction; Cervical ripening; Foley catheter.

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