Labor estimation by informational objective assessment (LEIOA) for preterm delivery prediction.

Purpose: To introduce LEIOA, a new screening method to forecast which patients admitted to the hospital because of suspected threatened premature delivery will give birth in < 7 days, so that it can be used to assist in the prognosis and treatment jointly with other clinical tools.

Methods: From 2010 to 2013, 286 tocographies from women with gestational ages comprehended between 24 and 37 weeks were collected and studied. Then, we developed a new predictive model based on uterine contractions which combine the Generalized Hurst Exponent and the Approximate Entropy by logistic regression (LEIOA model).

Estimation of preterm labor immediacy by nonlinear methods.

Preterm delivery affects about one tenth of human births and is associated with an increased perinatal morbimortality as well as with remarkable costs. Even if there are a number of predictors and markers of preterm delivery, none of them has a high accuracy. In order to find quantitative indicators of the immediacy of labor, 142 cardiotocographies (CTG) recorded from women consulting because of suspected threatened premature delivery with gestational ages comprehended between 24 and 35 weeks were collected and analyzed.

Induction of labor in breech presentation at term: a retrospective cohort study.

Objective: To compare the outcome of two methods of labor induction and spontaneous onset of labor in breech presentation at term.

Material: A retrospective study between 2003 and 2012. We compare obstetric (indication of induction, Bishop score, cesarean rate) and perinatal outcomes (Apgar score, umbilical artery pH, base excess ≤-12 mmol/L, admission to neonatal unit) between prostaglandins and oxytocin.

Increased pain relief with remifentanil does not improve the success rate of external cephalic version: a randomized controlled trial.

Introduction: Our objective was to compare the effect of two pain relief methods (remifentanil vs. nitrous oxide) on the success rate of external cephalic version.

Material And Methods: We conducted a randomized open label parallel-group controlled single-center clinical trial with sequential design, at Cruces University Hospital, Spain.

Probability of cesarean delivery after successful external cephalic version.

Objective: To identify factors associated with cesarean delivery following successful external cephalic version (ECV).

Methods: In a prospective study, data were obtained for ECV procedures performed at Cruces University Hospital, Spain, between March 2002 and June 2012. Women with a singleton pregnancy who had a successful, uncomplicated ECV and whose delivery was assisted at the study hospital, with the fetus in cephalic presentation, were included.

Nitrous oxide for analgesia in external cephalic version at term: prospective comparative study.

Objective: The objective of this study was to analyze the effect of using inhaled nitrous oxide (N2O) for analgesia in external cephalic version (ECV) at term on the success rate of the procedure, on pain, and on obstetric and perinatal outcomes.

Methods: A prospective comparative cohort study among 300 women with singleton pregnancy in breech presentation at term undergoing an ECV with inhaled N2O in a 50:50 mix with oxygen for analgesia and 150 ECVs with no analgesia.

Results: The success rate was 52.

Influence of chorionicity in intra-partum management of twin deliveries.

Objective: To analyze morbidity and mortality in twin pregnancies as a function of the type of delivery and chorionicity.

Design: Retrospective cohort study.

Methods: Analysis of the type of delivery, intertwin time interval, and perinatal variables of >1000 twin deliveries during a 10-year period.

Induction at 41 weeks increases the risk of caesarean section in a hospital with a low rate of caesarean sections.

Objective: To analyse the impact of a change in the management of prolonged pregnancies from inducing labour at 42(+0) to induction at 41(0-6).

Design: Retrospective cohort study.

Methods: Analysis of 3563 single pregnancies with cephalic presentation of ≥ 41 weeks of gestation delivered in Cruces University Hospital (Spain).

Clinical score for the outcome of external cephalic version: a two-phase prospective study.

Aim: To design a score based on clinical parameters to predict the outcome of external cephalic versions (ECVs) at term.

Materials And Methods: A two-phase study was conducted (analysis/design and prospective validation) regarding 1000 versions performed between March 2002 and November 2010. The variables considered in the score were selected based on the results of multiple logistic regression models and multiple correspondence analyses published by our group.

Oxytocin versus dinoprostone vaginal insert for induction of labor after previous cesarean section: a retrospective comparative study.

Objective: To compare the efficacy and safety of two methods for induction of labor after previous cesarean section.

Methods: To compare 247 women with a previous cesarean section who were induced with a dinoprostone vaginal insert and 279 women with a previous cesarean section induced with oxytocin, between 2001 and 2008. We evaluated vaginal delivery rate, maternal morbidity and newborn morbidity and mortality.

A prospective study of the factors associated with the success rate of external cephalic version for breech presentation at term.

Objective: To determine the factors associated with the success rate of external cephalic version (ECV) for breech presentation at term.

Methods: A prospective analysis of 500 ECV maneuvers. The variables maternal age, maternal weight, body mass index, previous cesarean delivery, gestational age, parity, amount of amniotic fluid, placental location, and type of breech were studied using logistic regression analysis.

Atosiban vs. ritodrine as a tocolytic in external cephalic version at term: a prospective cohort study.

Objective: To compare the success rate of external cephalic version (ECV) at term using ritodrine or atosiban as a tocolytic agent.

Study Design: Prospective cohort study with a sample of 236 pregnant women with a breech presentation at term, from November 2006 to March 2008. Data have been analyzed from the moment the cephalic version is performed until the time of delivery.

Does fetal weight estimated by ultrasound really affect the success rate of external cephalic version?

OBJECTIVE. To determine whether fetal weight estimated by ultrasound on the day the external cephalic version (ECV) is related to the procedure's success rate. DESIGN.