["Portio priming" in post date pregnancies and low pelvic score (author's transl)].

In 40 pregnant women who had exceeded term and presented "immature" portio uteri a priming with prostaglandin F2 alpha was carried out. A new procedure of local application using a portioadapter was tried. This synthetic adapter was inserted over the uterine cervix by means of vacuum suction, filled with a mixture of 15 mg PG F2 alpha and methyl-cellulose ether, left in place for 6 hours and then removed. The control examination after the removal of the adapter showed a highly significant improvement of the cervical score in the nulliparae as well as in the multiparae group. In 7 cases the PG-filled adapter was inserted twice. Two cases (5%) had to be considered therapeutic failures because of insufficient cervical maturation. The method described should not be interpreted as birth induction but should be understood to be a preparation for the start of planned artificial birth.