Morbidades maternas modificam a composição nutricional do leite humano? uma revisão sistemática / Do maternal morbidities change the nutritional composition of human milk? A systematic review

Resumo O objetivo deste artigo é identificar os efeitos das morbidades maternas sobre a composição nutricional do leite humano. Revisão sistemática da literatura utilizando protocolo PRISMA para a busca, seleção e extração de dados. De acordo com o fluxograma proposto a busca bibliográfica resultou em 1.582 artigos e, destes, 14 foram selecionados. Os artigos elegidos para a presente revisão foram publicados entre 1987 e 2016. Nove estudos verificaram diferenças significativas na composição nutricional do leite de mães com diabetes mellitus, hipertensão arterial ou excesso de peso em comparação ao grupo controle. A maioria dos estudos demonstrou que a presença de doenças crônicas acarreta modificações na composição nutricional do leite humano. Os principais resultados evidenciaram menor concentração de lactose e gordura no leite de mulheres com diabetes mellitus. Quanto a hipertensão, foi verificado níveis mais elevados de proteína total no colostro e no leite maduro. Para o excesso de peso, foi observado maior teor de gordura e energia. É de extrema importância que essas mulheres tenham acompanhamento nutricional contínuo a fim de minimizar o impacto dessas morbidades sobre a composição nutricional do leite humano.

Abstract This paper aims to identify the effects of maternal morbidities on the nutritional composition of human milk. This systematic review of the literature employed a PRISMA's protocol for searching, selecting, and extracting data. The flowchart proposed for bibliographic search resulted in 1,582 papers, of which 14 were selected for this work. The papers selected for this review were published between 1987 and 2016. Nine studies found significant differences in the nutritional composition of the milk of mothers with diabetes mellitus, arterial hypertension, or overweight compared to the control group. Most studies have shown that the presence of chronic diseases leads to changes in the nutritional composition of human milk. The main results showed a lower concentration of lactose and fat in the milk of women with diabetes mellitus. Concerning hypertension, higher levels of total protein were found in colostrum and mature milk. A higher fat and energy content was observed in overweight mothers. It is imperative that these women have continuous nutritional monitoring to minimize the impact of these morbidities on the nutritional composition of breast milk.

Hormonal biomarkers for evaluating the impact of fetal growth restriction on the development of chronic adult disease / Biomarcadores hormonais para avaliar o impacto da restrição do crescimento fetal no desenvolvimento de doenças crônicas em adultos

Abstract The hypothesis of fetal origins to adult diseases proposes that metabolic chronic disorders, including cardiovascular diseases, diabetes, and hypertension originate in the developmental plasticity due to intrauterine insults. These processes involve an adaptative response by the fetus to changes in the environmental signals, which can promote the reset of hormones and of the metabolism to establish a "thrifty phenotype". Metabolic alterations during intrauterine growth restriction can modify the fetal programming. The present nonsystematic review intended to summarize historical and current references that indicated that developmental origins of health and disease (DOHaD) occur as a consequence of altered maternal and fetal metabolic pathways. The purpose is to highlight the potential implications of growth factors and adipokines in "developmental programming", which could interfere in the development by controlling fetal growth patterns. These changes affect the structure and the functional capacity of various organs, including the brain, the kidneys, and the pancreas. These investigations may improve the approach to optimizing antenatal as well as perinatal care aimed to protect newborns against long-termchronic diseases.

Resumo A hipótese das origens fetais de doenças em adultos propõe que distúrbios crônicos metabólicos, incluindo doenças cardiovasculares, diabetes e hipertensão, se originam na plasticidade do desenvolvimento devido a insultos intrauterinos. Estes processos envolvem uma resposta adaptativa do feto amudanças nos sinais ambientais que podem promover a redefinição dos hormônios e do metabolismo para estabelecer um "fenótipo poupador". Alteraçõesmetabólicas durante a restrição de crescimento intrauterino podem modificar a programação fetal. A presente revisão não-sistemática pretendeu resumir referências históricas e atuais que indicassem que as origens desenvolvimentistas da saúde e doença (DOHaD, na sigla em inglês) ocorrem como consequência de alterações nas vias metabólicas materna e fetal. O propósito é destacar as potenciais implicações de fatores de crescimento e adipocinas na "programação do desenvolvimento", que poderia interferir no desenvolvimento, controlando os padrões de crescimento fetal. Estas alterações afetam a estrutura e a capacidade funcional de inúmeros órgãos, incluindo o cérebro, os rins e o pâncreas. Estas investigações podemmelhorar a abordagempara otimizar os cuidados prénatais e perinatais, como objetivo de proteger os recém-nascidos contra doenças crônicas em longo prazo.

Nutritional profile of newborns with microcephaly and factors associated with worse outcomes

OBJECTIVE: To describe the nutritional profile of newborns with microcephaly and factors associated with worse outcomes during the first 14 days of life. METHODS: This investigation is a longitudinal, descriptive study carried out in 21 full-term neonates exposed vertically to the Zika virus and hospitalized in a neonatal intensive care unit from February to September 2016. Patients receiving parenteral nutrition were excluded. Data analysis was performed using a generalized estimating equation model and Student's t-test to evaluate the association between worsening weight-for-age z-scores and independent clinical, sociodemographic and nutritional variables during hospitalization, with p<0.05 indicating significance. RESULTS: During hospitalization, there was a decrease in the mean values of the weight-for-age z-scores. The factors associated with worse nutritional outcomes were symptomatic exposure to the Zika virus, low maternal schooling, absence of maternal income and consumption of infant formula (p<0.05). Calcification and severe microcephaly were also associated with poor nutritional outcomes. Energy and macronutrient consumption remained below the recommendations and had an upward trend during hospitalization. CONCLUSION: The presence of cerebral calcification, the severity of microcephaly and symptomatic maternal exposure to Zika virus affected the nutritional status of newborns. In terms of nutritional factors, human milk intake had a positive impact, reducing weight loss in the first days of life. Other known factors, such as income and maternal schooling, were still associated with a poor nutritional status.

Micronutrient supplementation adherence and influence on the prevalences of anemia and iron, zinc and vitamin A deficiencies in preemies with a corrected age of six months

OBJECTIVE: To analyze adherence to the recommended iron, zinc and multivitamin supplementation guidelines for preemies, the factors associated with this adherence, and the influence of adherence on the occurrence of anemia and iron, zinc and vitamin A deficiencies. METHODS: This prospective cohort study followed 58 preemies born in 2014 until they reached six months corrected age. The preemies were followed at a referral secondary health service and represented 63.7% of the preterm infants born that year. Outcomes of interest included high or low adherence to iron, zinc and multivitamin supplementation guidelines; prevalence of anemia; and prevalences of iron, zinc, and vitamin A deficiencies. The prevalence ratios were calculated by Poisson regression. RESULTS: Thirty-eight (65.5%) preemies presented high adherence to micronutrient supplementation guidelines. At six months of corrected age, no preemie had vitamin A deficiency. The prevalences of anemia, iron deficiency and zinc deficiency were higher in the low-adherence group but also concerning in the high-adherence group. Preemies with low adherence to micronutrient supplementation guidelines were 2.5 times more likely to develop anemia and 3.1 times more likely to develop zinc deficiency. Low maternal education level increased the likelihood of nonadherence to all three supplements by 2.2 times. CONCLUSIONS: Low maternal education level was independently associated with low adherence to iron, zinc and vitamin A supplementation guidelines in preemies, which impacted the prevalences of anemia and iron and zinc deficiencies at six months of corrected age.

Morbidade neonatal near miss na pesquisa Nascer no Brasil / Morbilidad neonatal near miss en la encuesta Nacer en Brasil / Neonatal near miss in the Birth in Brazil survey

Dados da pesquisa Nascer no Brasil, um estudo nacional de base hospitalar, incluindo 24.197 puérperas e seus recém-nascidos, de fevereiro de 2011 a julho de 2012, foram utilizados para construir um indicador de morbidade neonatal near miss. Foi utilizada amostragem por conglomerados em três estágios (hospitais, dias, mulheres), estratificada por macrorregião, tipo de município (capital ou interior) e tipo de financiamento hospitalar. Modelos de regressão logística foram utilizados para identificar as variáveis que poderiam predizer a mortalidade neonatal e compor o indicador neonatal near miss. Após serem testadas 19 variáveis, cinco foram escolhidas (peso ao nascer < 1.500g, Apgar no 5o minuto de vida < 7, uso de ventilação mecânica, idade gestacional < 32 semanas e relato de malformações congênitas). A taxa de morbidade neonatal near miss no inquérito Nascer no Brasil foi de 39,2 por mil nascidos vivos, três vezes e meia a taxa de mortalidade neonatal (11,1 por mil). O indicador de morbidade neonatal near miss foi capaz de identificar situações com alto risco de morte neonatal.

Se utilizaron datos de la encuesta Nacer en Brasil, un estudio nacional de base hospitalaria, realizado con 24.197 madres y sus recién nacidos, recabado de febrero 2011 a julio 2012, para construir un indicador de morbilidad neonatal near miss. Se utilizó el muestreo por conglomerados en tres etapas (hospitales, días, mujeres), estratificado por microrregiones, tipo de municipio (capital o interior), y tipo de financiamiento de los hospitales. Se emplearon modelos de regresión logística para identificar las variables que podrían predecir la mortalidad neonatal y componer el indicador de morbilidad neonatal near miss. Una vez ensayadas 19 variables, cinco fueron elegidas (peso al nacer < 1.500g; Apgar a los 5 minutos de vida; < 7 ventilación mecánica; edad gestacional < 32 semanas, y reporte de malformaciones congénitas). La tasa de morbilidad neonatal near miss fue de un 30,2 por mil nacidos vivos, tres veces y media la tasa de mortalidad neonatal (11,1 por mil). El indicador de morbilidad neonatal near miss fue capaz de identificar situaciones con alto riesgo de muerte neonatal.

This study used data from the Birth in Brazil survey, a nationwide hospital-based study of 24,197 postpartum women and their newborns, collected between February 2011 and July 2012. A three-stage cluster sampling design (hospitals, days, women) was used consisting of stratification by geographic region, type of municipality (capital or non-capital), and type of hospital financing. Logistic regression was used to identify variables that were potential predictors of neonatal mortality and neonatal near miss indicators. After testing nineteen variables, five were chosen to compose a set of neonatal near miss indicators (birth weight of less than 1,500g, Apgar score of less than 7 in the 5th minute of life, use of mechanical ventilation, gestational age of less than 32 weeks and congenital malformations). The neonatal near miss rate in the Birth in Brazil survey was 39.2 per thousand live births, three and a half times higher than the neonatal mortality rate (11.1 per thousand). These neonatal near miss indicators were able to identify situations with a high risk of neonatal death.

Práticas de atenção hospitalar ao recém-nascido saudável no Brasil / La práctica en el cuidado de los recién nacidos sanos en Brasil / Clinical practices in the hospital care of healthy newborn infant in Brazil

O objetivo do estudo foi avaliar o cuidado ao recém-nascido saudável a termo e identificar variações nesse cuidado no atendimento ao parto e na primeira hora de vida. Utilizou-se a base de dados da pesquisa Nascer no Brasil. Foram estimadas as razões de produtos cruzados OR brutas e ajustadas entre as características do hospital, maternas e de assistência ao parto com os desfechos: aspiração de vias aéreas e gástrica, uso do oxigênio inalatório, uso de incubadora, contato pele a pele, alojamento conjunto e oferta do seio materno na sala de parto e na primeira hora de vida. Foi observada grande variação das práticas usadas na assistência ao recém-nascido a termo na sala de parto. Práticas consideradas inadequadas como uso de oxigênio inalatório (9,5%), aspiração de vias aéreas (71,1%) e gástrica (39,7%) e uso de incubadora (8,8%) foram excessivamente usadas. A ida ao seio na sala de parto foi considerada baixa (16,1%), mesmo nos hospitais com título de Hospital Amigo da Criança (24%). Esses resultados sugerem baixos níveis de conhecimento e aderência às boas práticas clínicas.

El objetivo del estudio fue evaluar el cuidado de los recién nacidos sanos y determinar si existen desigualdades en la prestación de servicios y durante la primera hora de vida. Se utilizó la base de datos de la encuesta Nacer en Brasil. Las ratios se estimaron a través del producto odds ratio (OR) y se realizó un ajuste bruto entre las características del hospital, la madre y la atención del nacimiento con los siguientes resultados: aspiración gástrica y de las vías respiratorias, uso de oxígeno inhalado, incubadora, contacto piel con piel, alojamiento conjunto y ofrecer lactancia materna en la sala de partos y en la primera hora de vida. Existe una alta variación de las prácticas utilizadas en el cuidado del recién nacido. Prácticas consideradas inapropiadas, como el uso de oxígeno inhalado (9,5%), aspiración vías respiratorias (71,1%) y gástrica (39,7%) y el uso de incubadora (8,8%) fueron altos. La lactancia materna en la sala de partos fue baja (16,1%), hasta en los hospitales especializados en la atención a niños (24%). Los resultados sugieren bajos niveles de la adhesión a las buenas prácticas.

The aim of this study was to evaluate the care of healthy full-term newborns and to identify variations in childbirth care and practices in the first hour of life. We used data from the Birth in Brazil survey. Unadjusted and adjusted odds ratio (OR) of hospital-delivered care for the mother and during childbirth were estimated for the following outcomes: upper airways and gastric aspiration, use of inhaled oxygen, use of incubator, skin-to-skin contact after birth, rooming-in and breastfeeding in the delivery room and within the first hour of life. We observed wide variations in the care of healthy full-term newborn in the delivery room. Practices considered inadequate, such as use of inhaled oxygen, (9.5%) aspiration of airways (71.1%) and gastric suctioning (39.7%), and the use of incubator (8.8%) were excessively used. Breastfeeding in the delivery room was low (16%), even when the Baby-Friendly Hospital Initiative had been implemented (24%). The results suggest poor knowledge and compliance by health practitioners to good clinical practice. Such noncompliance was probably not due to the differences in resources, since most births take place in hospitals where the necessary resources are available.