Predictive value of pelvic scores for induction of labor by local PGE2.
The predictive value of pelvic scores, parity, age and gestational age for induction of labor by local prostaglandin-E2 (PGE2) was examined in 336 women attempting induction of labor by intracervical or vaginal PGE2. The patient characteristics were correlated to: (1) vaginal delivery within 48 h, (2) the period from induction to onset of labor (latency period), and (3) the duration of labor. The Bishop score (P < 0.01) and even more the Lange score (P < 0.0001) were significantly inversely correlated to both latency period and induction-delivery period. This was caused by cervical dilatation (P < 0.001), fetal station (P < 0.05) and cervical length (P < 0.05), whereas position and consistency of the cervix were of no importance. All three periods studied were significantly (P < 0.0001) shorter in parous women. In primiparous women, gestational age was of no importance for the latency period; however, higher gestational age was associated with longer labor (P < 0.001). We conclude that the predictive value of pelvic scores on induction hardly differs using local PGE2 compared to conventional methods; furthermore, the Bishop score should be substituted, disregarding position and consistency of the cervix, but putting more weight to cervical dilatation. A new pelvic score is proposed.
Lyndrup
J
J
Department of Gynecology and Obstetrics, Herlev University Hospital, Copenhagen, Denmark.
Legarth
J
J
Weber
T
T
Nickelsen
C
C
Guldbaek
E
E
D000328:Adult; D002584:Cervix Uteri / Q000187:drug effects* / Q000502:physiology; D004106:Dilatation; D015232:Dinoprostone / Q000008:administration & dosage* / Q000494:pharmacology; D005260:Female; D005782:Gels; D006801:Humans; D007745:Labor Onset / Q000187:drug effects* / Q000502:physiology*; D007751:Labor, Induced / Q000379:methods; D007743:Labor, Obstetric / Q000502:physiology; D015993:Life Tables; D010570:Pessaries; D011237:Predictive Value of Tests; D011247:Pregnancy; D011446:Prospective Studies; D013997:Time Factors
D005782:Gels; D015232:Dinoprostone