https://www.thelancet.com/pdfs/journals/lancet/PIIS0140-6736(15)01024-7.pdf

Breastfeeding in the 21st century: epidemiology, mechanisms, and lifelong effect

https://www.thelancet.com/pdfs/journals/lancet/PIIS0140-6736(12)60820-4.pdf

National regional and worldwide estimates of preterm birth rates in the year 2010 with time trends since 1990 for selected countries: a systematic analysis and implications.

Hyperglycemia and Adverse Pregnancy Outcomes

Resumen Incidencia mundial de parto prematuro: revision sistematica de la morbilidad y mortalidad maternas Objetivo Analizar las tasas de prematuridad a nivel mundial para evaluar la incidencia de este problema de salud publica, determinar la distribucion regional de los partos prematuros y profundizar en el conocimiento de las actuales estrategias de evaluacion.Metodos Los datos utilizados sobre las tasas de prematuridad a nivel mundial se extrajeron a lo largo de una revision sistematica anterior de datos publicados e ineditos sobre la mortalidad y morbilidad maternas notificados entre 1997 y 2002. Esos datos se complementaron mediante una busqueda que abarco el periodo 2003–2007. Las tasas de prematuridad de los paises sin datos se estimaron mediante modelos de regresion multiple especificos para cada region.Resultados Estimamos que en 2005 se registraron 12,9 millones de partos prematuros, lo que representa el 9,6% de todos los nacimientos a nivel mundial. Aproximadamente 11 millones (85%) de ellos se concentraron en Africa y Asia, mientras que en Europa y America del Norte (excluido Mexico) se registraron 0,5 millones en cada caso, y en America Latina y el Caribe, 0,9 millones. Las tasas mas elevadas de prematuridad se dieron en Africa y America del Norte (11,9% y 10,6% de todos los nacimientos, respectivamente), y las mas bajas en Europa (6,2%).Conclusion El parto prematuro es un problema de salud perinatal importante en todo el mundo. Los paises en desarrollo, especialmente de Africa y Asia meridional, son los que sufren la carga mas alta en terminos absolutos, pero en America del Norte tambien se observa una tasa elevada. Es necesario comprender mejor las causas de la prematuridad y obtener estimaciones mas precisas de la incidencia de ese problema en cada pais si se desea mejorar el acceso a una atencion obstetrica y neonatal eficaz.

/pdf/the-worldwide-incidence-of-preterm-birth-a-systematic-review-210c5n0761.pdf

The worldwide incidence of preterm birth: a systematic review of maternal mortality and morbidity

The aim of this study was to revise the 2003 Fenton Preterm Growth Chart, specifically to: a) harmonize the preterm growth chart with the new World Health Organization (WHO) Growth Standard, b) smooth the data between the preterm and WHO estimates, informed by the Preterm Multicentre Growth (PreM Growth) study while maintaining data integrity from 22 to 36 and at 50 weeks, and to c) re-scale the chart x-axis to actual age (rather than completed weeks) to support growth monitoring. Systematic review, meta-analysis, and growth chart development. We systematically searched published and unpublished literature to find population-based preterm size at birth measurement (weight, length, and/or head circumference) references, from developed countries with: Corrected gestational ages through infant assessment and/or statistical correction; Data percentiles as low as 24 weeks gestational age or lower; Sample with greater than 500 infants less than 30 weeks. Growth curves for males and females were produced using cubic splines to 50 weeks post menstrual age. LMS parameters (skew, median, and standard deviation) were calculated. Six large population-based surveys of size at preterm birth representing 3,986,456 births (34,639 births < 30 weeks) from countries Germany, United States, Italy, Australia, Scotland, and Canada were combined in meta-analyses. Smooth growth chart curves were developed, while ensuring close agreement with the data between 24 and 36 weeks and at 50 weeks. The revised sex-specific actual-age growth charts are based on the recommended growth goal for preterm infants, the fetus, followed by the term infant. These preterm growth charts, with the disjunction between these datasets smoothing informed by the international PreM Growth study, may support an improved transition of preterm infant growth monitoring to the WHO growth charts.

/pdf/a-systematic-review-and-meta-analysis-to-revise-the-fenton-1bkcp7xdca.pdf

A systematic review and meta-analysis to revise the Fenton growth chart for preterm infants

Of episiotomies, implementation science, and repeating trials.

Purpose Neuraxial analgesia is effective and widely used during labour, but little is known about maternal satisfaction with its use. Our objectives were to assess the frequency of incomplete maternal satisfaction with neuraxial labour analgesia and its predictors. Methods We extracted data from the 2016 National Perinatal Survey, a cross-sectional population-based study including all births during one week in all French maternity units. This analysis included all women who attempted vaginal delivery with neuraxial analgesia. Maternal satisfaction with analgesia was assessed by a 4-point Likert scale during a postpartum interview. Incomplete satisfaction grouped together women who were fairly, not sufficiently and not at all satisfied. We performed generalised estimating equations analyses adjusted for sociodemographic, obstetric, anaesthetic, and organisational characteristics to compare women with incomplete satisfaction to those completely satisfied. Results Among the 8538 women included, 35.2% were incompletely satisfied with their neuraxial analgesia. The odds of incomplete satisfaction were higher among women who reported a prenatal preference not to use neuraxial analgesia but subsequently did (adjusted odds ratio 1.21; 95% confidence interval 1.05–1.39) and among those who did not use patient-controlled neuraxial analgesia (1.20; 1.07–1.34); the odds were lower among women who used combined spinal epidural analgesia (0.53; 0.28−0.99) than among those with epidural analgesia. Conclusion Incomplete maternal satisfaction with neuraxial analgesia is a frequent concern in France. Increasing the use of patient-controlled neuraxial analgesia and combined spinal-epidural analgesia, as well as consistency between prenatal preference and actual use of neuraxial analgesia may improve maternal satisfaction.

Predictors of incomplete maternal satisfaction with neuraxial labor analgesia: A nationwide study

Research on maternal prepregnancy weight suggests adiposity is associated with dysfunctional labor, but knowledge about how gestational weight gain (GWG) affects labor is sparse. Our objective was to evaluate associations between GWG adequacy and intrapartum obstetric interventions (oxytocin administration; cesarean section) necessitated by labor dysfunction.

https://onlinelibrary.wiley.com/doi/pdfdirect/10.1111/aogs.14496

Gestational weight gain adequacy and intrapartum oxytocin and cesarean section use: Observational population‐based study in France

Erratum: Differences in outcome between twins and singletons born very preterm: Results from a population-based European cohort (Human Reproduction (2010) 25 (1035-1043))

Béatrice Blondel

Papers

Of episiotomies, implementation science, and repeating trials.

Predictors of incomplete maternal satisfaction with neuraxial labor analgesia: A nationwide study

Gestational weight gain adequacy and intrapartum oxytocin and cesarean section use: Observational population‐based study in France

Erratum: Differences in outcome between twins and singletons born very preterm: Results from a population-based European cohort (Human Reproduction (2010) 25 (1035-1043))

Comparison of vaginal examination findings in two antenatal clinics.