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Abstract
Objective To compare the effectiveness of sublingual and vaginal misoprostol application for cervical ripening prior to manual vacuum aspiration (MVA) under local anaesthesia for voluntary termination of pregnancy between 7 and 10 weeks of gestation.
Materials and methods Prospective randomized study in which 72 women were randomly assigned to administration of either 400 μg vaginal misoprostol 3 hours prior to or 200 μg sublingual misoprostol 2 hours prior to the surgical procedure. We took the pre-operative cervical dilatation that was achieved as the main outcome measure. The duration of the procedure, intra-operative blood loss, pain perception before and during the operation, patients' satisfaction, side effects and duration of post-operative bleeding were secondary outcome measures.
Results A similar pre-operative cervical dilatation was achieved in the sublingual and the vaginal groups (6.9 ± 1.6 mm and 6.6 ± 1.1 mm, respectively; p = 0.3). The duration of the operation, intra-operative blood loss, and patients' satisfaction did not differ between the two groups. Pain scores were significantly higher in the sublingual group than in the vaginal group, both after administration of misoprostol (p = 0.02) and during the procedure (p = 0.02). Nausea and vaginal spotting were significantly more frequent (p = 0.01 and p = 0.003, respectively), but post-operative bleeding significantly shorter (p = 0.003) in the sublingual group.
Conclusion Administration of 200 μg sublingual misoprostol 2 hours before suction curettage under local anaesthesia was as effective as 400 μg vaginal misoprostol 3 hours before that procedure with regard to achieving cervical dilatation. It resulted in higher pre-operative and intra-operative pain scores without changing patients' satisfaction.