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Mechanical cervicAl ripeninG for women with PrOlongedPregnancies (MAGPOP): protocol for a randomised controlled trial
Caroline Diguisto1,2, Amélie Le Gouge3, Bruno Giraudeau2,3
1Maternité Olympe de Gouges, Centre Hospitalier Régional Universitaire Tours, Tonnellé, France.
Introduction:
Induction of labour for prolonged pregnancies (PP) when the cervix is unfavourable is a challenging situation. Cervical ripening by pharmacological or mechanical techniques before oxytocin administration is used to increase the likelihood of vaginal delivery. Both techniques are equally effective in achieving vaginal delivery but excessive uterine activity, which induces fetal heart rate (FHR) anomalies, is more frequent after the pharmacological intervention. We hypothesised that mechanical cervical ripening could reduce the caesarean rate for non-reassuring FHR especially in PP where fetuses are already susceptible to this.
Methods And Analysis:
A multicentre, superiority, open-label, parallel-group, randomised controlled trial that aims to compare cervical ripening with a mechanical device (Cervical Ripening Balloon, Cook-Medical Europe, Ireland) inserted in standardised manner for 24 hours to pharmacological cervical ripening (Propess system for slow release system of 10 mg of dinoprostone, Ferring SAS, France) before oxytocin administration. Women (n=1220) will be randomised in a 1:1 ratio in 15 French units. Participants will be women with a singleton pregnancy, a vertex presentation, a term ≥41+0 and≤42+0 week's gestation, and for whom induction of labour is planned. Women with a Bishop score ≥6, a prior caesarean delivery, premature rupture of membranes or with any contraindication for vaginal delivery will be excluded. The primary endpoint is the caesarean rate for non-reassuring FHR. Secondary outcomes are related to delivery and perinatal morbidity. As study investigators and patients cannot be masked to treatment assignment, to compensate for the absence of blinding, an independent endpoint adjudication committee, blinded to group allocation, will determine whether the caesarean for non-reassuring FHR was justified.
Ethics And Dissemination:
Written informed consent will be obtained from all participants. The Tours Research ethics committee has approved this study (2016-R23, 29 November 2016). Study findings will be submitted for publication and presented at relevant conferences.
Trial Registration Number:
NCT02907060; pre-results.
