Judith U Hibbard

OBJECTIVE: Our purpose was to determine the maternal risks associated with failed attempt at vaginal birth after cesarean compared with elective repeat cesarean delivery or successful vaginal birth after cesarean.

STUDY DESIGN: From 1989 to 1998 all patients attempting vaginal birth after cesarean and all patients undergoing repeat cesarean deliveries were reviewed. Data were extracted from a computerized obstetric database and from medical charts. The following three groups were ...

OBJECTIVE: Assess effects of body mass index (BMI) on trial of labor after previous cesarean delivery and determine whether morbidly obese women have greater maternal and perinatal morbidity with trial of labor compared with elective repeat cesarean delivery.

METHODS: Secondary analysis from a prospective observational study included all term singletons undergoing trial of labor after previous cesarean delivery. Body mass index groups were as follows: normal 18.5-24.9, overweight ...

CONTEXT: Late preterm births (340/7-366/7 weeks) account for an increasing proportion of prematurity-associated short-term morbidities, particularly respiratory, that require specialized care and prolonged neonatal hospital stays.

OBJECTIVE: To assess short-term respiratory morbidity in late preterm births compared with term births in a contemporary cohort of deliveries in the United States.

DESIGN, SETTING, AND PARTICIPANTS: Retrospective collection of electronic data from 12 ...

Among nursing parturients after cesarean delivery, intravenous patient-controlled analgesia (PCA) with meperidine is associated with significantly more neonatal neurobehavioral depression than PCA with morphine. A single dose of epidural morphine (4 mg) decreases postcesarean opioid analgesic requirements and may reduce or prevent neonatal neurobehavioral depression associated with PCA meperidine. Prospectively, 102 term parturients underwent cesarean delivery with epidural anesthesia, ...

OBJECTIVE: To use contemporary labor data to examine the labor patterns in a large, modern obstetric population in the United States.

METHODS: Data were from the Consortium on Safe Labor, a multicenter retrospective study that abstracted detailed labor and delivery information from electronic medical records in 19 hospitals across the United States. A total of 62,415 parturients were selected who had a singleton term gestation, spontaneous onset of labor, vertex presentation, vaginal ...

OBJECTIVE: To compare maternal and neonatal outcomes in obese women according to weight change and obesity class.

STUDY DESIGN: Cohort study from the Consortium on Safe Labor of 20,950 obese women with a singleton, term live birth from 2002-2008. Risk for adverse outcomes was calculated by multiple logistic regression analysis for weight change categories (weight loss [<0 kg], low [0-4.9 kg], normal [5.0-9.0 kg], high weight gain [>9.0 kg]) in each obesity class (I 30.0-34.9 kg/m(2), II ...

OBJECTIVE: To evaluate labor progress and length according to maternal age.

METHODS: Data were abstracted from the Consortium on Safe Labor, a multicenter retrospective study from 19 hospitals in the U.S. We studied 120,442 laboring gravid women with singleton, term, cephalic fetuses with normal outcomes and without a prior cesarean delivery from 2002 to 2008. Maternal age categories were younger than 20 years of age, 20-29 years of age, 30-39 years of age, and 40 years of age or older ...

OBJECTIVE: To describe contemporary cesarean delivery practice in the United States.

STUDY DESIGN: Consortium on Safe Labor collected detailed labor and delivery information from 228,668 electronic medical records from 19 hospitals across the United States, 2002-2008.

RESULTS: The overall cesarean delivery rate was 30.5%. The 31.2% of nulliparous women were delivered by cesarean section. Prelabor repeat cesarean delivery due to a previous uterine scar contributed 30.9% of all cesarean ...

BACKGROUND: Temporal changes in systemic arterial compliance and wave propagation properties (pulsatile arterial load) and their role in ventricular-systemic arterial coupling during gestation have not been explored. Noninvasive methods combined with recently developed mathematical modeling techniques were used to characterize vascular and left ventricular (LV) mechanical adaptations during normal gestation.

METHODS AND RESULTS: Fourteen healthy women were studied at each trimester of ...

OBJECTIVE: To characterize potentially modifiable risk factors for third- or fourth-degree perineal lacerations and cervical lacerations in a contemporary U.S. obstetric practice.

METHODS: The Consortium on Safe Labor collected electronic medical records from 19 hospitals within 12 institutions (228,668 deliveries from 2002 to 2008). Information on patient characteristics, prenatal complications, labor and delivery data, and maternal and neonatal outcomes were collected. Only women with ...

OBJECTIVE: To determine whether cervical length, as measured by transvaginal sonogram in asymptomatic gravidas at 16-22 weeks, is associated with risk of spontaneous preterm delivery.

METHODS: In a prospective observational study in an unselected urban tertiary care population, cervical length was measured by transvaginal ultrasound during routine anatomic surveys in 760 gravidas at 16 0/7 to 22 6/7 weeks. The predictor variable was cervical length and the outcome variable was ...

OBJECTIVE: We sought to determine maternal and neonatal outcomes by labor onset type and gestational age.

STUDY DESIGN: We used electronic medical records data from 10 US institutions in the Consortium on Safe Labor on 115,528 deliveries from 2002 through 2008. Deliveries were divided by labor onset type (spontaneous, elective induction, indicated induction, unlabored cesarean). Neonatal and maternal outcomes were calculated by labor onset type and gestational age.

RESULTS: Neonatal ...

OBJECTIVE: To examine the differences in perinatal outcomes among women with a prior preterm birth who received cerclage compared with cerclage plus 17α-hydroxyprogesterone caproate.

METHODS: Women with transvaginal cerclage placement and a prior delivery between 16 and 36 weeks of gestation were identified over a 10-year period (July 2002 to May 2012) in this retrospective cohort study. Exclusion criteria were delivery at another institution, abdominal cerclage, multiple gestations, and ...

OBJECTIVE: Excess soluble vascular endothelial growth factor receptor, fms-like tyrosine kinase-1 (sFlt-1), and reduced placental growth factor (PlGF) mediate the genesis of preeclampsia. Cigarette smoking reduces the risk of preeclampsia. We hypothesized that placental secretion of sFlt-1 and PlGF was affected by exposure to cigarette smoke extract.

STUDY DESIGN: Term placental villous explants were cultured with cigarette smoke extract. Media were analyzed for sFlt-1 and PlGF. ...