[Local application of prostaglandins by means of a portio-adapter: A new method of induction of labor (author's transl)].

In 102 pregnant women with low cervix-scores (37th-42nd week of gestation) 1,25 mg PGE2 were applied to the cervix uteri by means of a portio-adapter. In 69 cases (67,6%) labor was induced. In 7 cases additional 0,75 mg PGE2 were instilled after 6h. in 9 women the portio-adapter was applied a second time the next day (in 4 of these even a third time). In 17 cases amniotomy was performed the next day. 11 patients (10,8%) were delivered by Cesarian section or low forceps, one women was discharged from hospital, all other delivered spontaneously. In 15 consecutive spontanous deliveries the pH of the V. umbilicalis was 7,29 +/- 0,12, the arterial pH 7,23 +/- 0,15. Intrauterine tocography revealed a uterine hyperactivity with no dystocie. When prostaglandins are applied to the cervix by means of a portio-adapter, the preparation of a gel-mixture can be avoided, an exact anatomic localisation of the therapeutic solutions is provided and the prostaglandins can be withdrawn at least partly in case of hyperstimulation. Another advantage of this from this induction is that the women are not confined to their bed until shortly before delivery.