Timing of umbilical cord-clamping and infant anaemia: the role of maternal anaemia.

BACKGROUND: Evidence from randomized controlled trials has shown that delayed cord-clamping is beneficial to infant iron status. The role of maternal anaemia in this relationship, however, has not been established. OBJECTIVE: To determine the effect of maternal anaemia at delivery on the association between timing of umbilical cord-clamping and infant anaemia at 4 and 8 months of age. METHODS: A cohort of pregnant women admitted to the labour room of Hospital Iquitos (Iquitos, Peru) and their newborns were recruited into the study during two time periods (18 May to 3 June and 6-20 July 2009). Between the two recruitment periods, the hospital's policy changed from early to delayed umbilical cord-clamping. Maternal haemoglobin levels were measured before delivery, and the time between delivery and cord-clamping was recorded at delivery for the entire cohort. Mother-infant pairs were followed-up at 4 (n = 207) and 8 months (n = 184) post partum. Infant haemoglobin levels were measured at follow-up visits. Data were analysed using logistic regression models. RESULTS: The prevalence of maternal anaemia (Hb <11.0 g/dl) at delivery was 22%. Infant haemoglobin levels at 4 and 8 months of age were 10.4 g/dl and 10.3 g/dl, respectively. Infant haemoglobin levels did not differ significantly between infants born to anaemic mothers and those born to non-anaemic mothers at either 4 or 8 months of age. However, the association between the timing of cord-clamping and infant anaemia was modified by the mother's anaemia status. Significant benefits of delayed cord-clamping in preventing anaemia were found in infants born to anaemic mothers at both 4 months (aOR = 0.59, 95% CI 0.36-0.99) and 8 months (aOR = 0.38, 95% CI 0.19-0.76) of age. CONCLUSION: The study contributes additional evidence in support of delayed cord-clamping. This intervention is likely to have most public health impact in areas with a high prevalence of anaemia during pregnancy.

Prediction of duration of breastfeeding among migrant and Canadian-born women: results from a multi-center study.

OBJECTIVE: To examine and compare predictors of breastfeeding duration among migrant and Canadian-born women. STUDY DESIGN: As part of a longitudinal study, a sample of 1503 mothers was recruited from 12 hospitals in Canada who completed questionnaires at 1 and 16 weeks postpartum. Following bivariate analysis, multivariate logistic regression analyses were completed to examine and compare predictors of continued breastfeeding at 16 weeks postpartum among migrant and Canadian-born women. RESULTS: Among migrant women, factors predictive of breastfeeding duration included maternal age ≥ 35 years, primiparity, and breast engorgement pain at 1 week postpartum. Factors predictive of discontinued breastfeeding in this group included maternal age <20 years, higher gender-related development index of country of origin, no previous breastfeeding experience, breastfeeding duration of peers <6 months, planned duration of exclusive breastfeeding <6 months, and not exclusively breastfeeding at 1 week postpartum. Among Canadian-born women, factors predictive of breastfeeding duration included residence in Vancouver and maternal age ≥ 35 years. Factors predictive of discontinued breastfeeding included residence in Toronto, maternal age <20 years, smoking at 16 weeks postpartum, primiparity, planned duration of exclusive breastfeeding <6 months, and not exclusively breastfeeding at 1 week postpartum. CONCLUSIONS: Although certain predictors for breastfeeding duration were similar between migrant and Canadian-born women, several were dissimilar, suggesting that these groups might benefit from different strategies to optimize breastfeeding outcomes.

A comparison of low birth weight among newborns of early adolescents, late adolescents, and adult mothers in the Peruvian Amazon.

To compare low birth weight (LBW: <2,500 g) between infants born to adolescent and adult mothers in Iquitos, Peru. A random sample of 4,467 records of women who delivered at the Hospital Apoyo Iquitos between 2005 and 2007 was collected from hospital birth registries. Multivariate logistic and linear regression analyses were performed to compare LBW in newborns of adolescents (10-14, 15-19 years) and adults (≥20 years) and then for primiparous mothers with a normal gestational age, adjusting for newborn sex, antenatal care, and location of the mother's residence. A total of 4,384 mothers had had a singleton live birth and 1,501 were primiparous with a normal gestational age. Early and late adolescents had significantly greater odds of having a LBW infant than adults (OR = 2.28, 95%CI: 1.09, 4.78; OR = 1.67, 95%CI: 1.30, 2.14, respectively). For primiparous mothers with a normal gestational age, the same was true only for early adolescents (OR = 3.07, 95%CI: 1.09, 8.61). There were significant differences in mean birth weight between adults (3178.7 g) and both adolescent age groups overall (10-14 years: 2848.9 g; 15-19 years: 2998.3 g) and for primiparous mothers with a normal gestational age (10-14 years: 2900.8 g; 15-19 years: 3059.2 g; ≥20 years: 3151.8 g). Results suggest there is an important difference between adolescent and adult mothers in terms of newborn birth weight, especially among early adolescents. Future research on LBW and possibly other adverse birth outcomes should consider early adolescents as a separate sub-group of higher risk.

Capacitación e integración de promotores rurales de salud / The training and integration of village health workers

Este artículo trata de la selección, capacitación, funciones y formas de supervisión de un grupo de promotores de salud en una zona rural de Haití. El objetivo es proveer un esquema modelo para quienes se propongan formar este tipo de promotores e impulsar y evaluar sus actividades. Además de los métodos de selección y adiestramiento, se describen también las relaciones que desarrollaron los promotores entre sí y con otros miembros del equipo de salud, la operación del programa y las farmacias comunitarias que establecieron los promotores en sus domicilios

Disponible en inglés en Bull. Pan Am. Health Organ 25(2), 1991

The training and integration of village health workers

This article describes the selection, training, activities, and supervision of village health workers (VHWs) in a rural area of Haiti. The aim is to provide an overview of work that may serve as a useful example to others engaged or wishing to engage in VHW programs. The account describes selection and training of the VHWs, relationships established between themselves and with other health team members, operation of the VHW program, and development of community pharmacies by the VHWs in their homes

Available in spanish in Bol. Oficina Sanit. Panam 110(4), 1991