EP01.10: Cervical measurement are useful predictor of success of TOLAC

Abstract

To evaluate whether measurement of cervix is helpful in predicting vaginal delivery in patients whose indication of previous Caesarean section was protraction disorder. We studied retrospectively about pregnant women who were admitted for trial of labour after Caesarean delivery (TOLAC) from January 2014 to December 2014 in St Mary's Hospital, Seoul, Republic of Korea. Among them, women whose indication of previous Caesarean section was protraction disorder were enrolled. Exclusion criteria were premature rupture of membrane (PPROM), suspicious macrosomia, pregnancy with diseases affecting labour course (ex.gestational diabetes, pre-eclampsia etc). Total 94 patients were studied. At 39 weeks of gestation, we checked cervical volume, cervical length and Bishop score. Success of TOLAC defined vaginal delivery (VBAC). After delivery we compared the outcome between VBAC (n = 62) and failed group (n = 32). VBAC rate was 66%. It was significantly lower rate compared with group of another previous Caesarean indications. In VBAC group, Cervical length was significantly shorter than failed group (3.0 ± 0.3 cm vs. 4.1 ± 0.5 cm, P < 0.001). Cervical volume and Bishop score were not significant in both group. Measuring cervical length is useful marker in predicting VBAC among TOLAC with previous protraction disorder history.