TY - BOOK AU - Grantz, Katherine L AU - Huang, Chun Chih AU - Iqbal, Sara N AU - Kawakita, Tetsuya AU - Landy, Helain J AU - Reddy, Uma M TI - Duration of Oxytocin and Rupture of the Membranes Before Diagnosing a Failed Induction of Labor SN - 0029-7844 PY - 2016/// KW - *Extraembryonic Membranes KW - *Labor, Induced KW - *Labor, Obstetric KW - *Oxytocics/ad [Administration & Dosage] KW - *Oxytocin/ad [Administration & Dosage] KW - Adult KW - Chorioamnionitis/ep [Epidemiology] KW - Endometritis/ep [Epidemiology] KW - Female KW - Humans KW - Infant, Newborn KW - Intensive Care, Neonatal/sn [Statistics & Numerical Data] KW - Labor, Obstetric/de [Drug Effects] KW - Parity KW - Pregnancy KW - Retrospective Studies KW - Time Factors KW - Treatment Failure KW - Young Adult KW - MedStar Health Research Institute KW - MedStar Washington Hospital Center KW - Obstetrics and Gynecology/Maternal-Fetal Medicine KW - Journal Article N1 - Available online from MWHC library: 1995 - present, Available in print through MWHC library: 1999 - 2006 N2 - CONCLUSION: Based on when neonatal morbidity increased, in an otherwise uncomplicated induction of labor with rupture of membranes, a latent phase after initiation of oxytocin of at least 12 hours for nulliparous women and 15 hours in multiparous women is a reasonable criterion for diagnosing a failed induction; METHODS: This is a retrospective cohort study using data from the Consortium of Safe Labor study, including 9,763 nulliparous and 8,379 multiparous women with singleton, term pregnancies undergoing induction at 2 cm dilation or less with rupture of membranes before 6 cm dilation after which the latent phase ended. Outcomes were evaluated according to duration of oxytocin and rupture of membranes; OBJECTIVE: To compare maternal and neonatal outcomes based on length of the latent phase during induction with rupture of membranes before 6 cm dilation; RESULTS: At time points from 6 to 18 hours of oxytocin and rupture of membranes, the rates of nulliparous women remaining in the latent phase declined (35.9-1.4%) and the rates of vaginal delivery for those remaining in the latent phase at these time periods decreased (54.1-29.9%) Nulliparous women remaining in the latent phase for 12 hours compared with women who had exited the latent phase had significantly increased rates of chorioamnionitis (12.1% compared with 4.1%) and endometritis (3.6% compared with 1.3%) and increased rates of neonatal intensive care unit admission (8.7% compared with 6.3%). Similar patterns were present for multiparous women at 15 hours UR - https://dx.doi.org/10.1097/AOG.0000000000001527 ER -