INTRODUÇÃO: Atividade física tem mostrado exercer muitos benefícios para saúde materno-fetal. Porém ainda persistem dúvidas em relação à influência da atividade física durante a gestação na prematuridade e baixo peso fetal. Visto que a prematuridade e o baixo peso fetal são conhecidamente as maiores causas para mortalidade e morbidade infantil, torna-se fundamental investigar detalhadamente a relação entre atividade física materna e resultados perinatais.OBJETIVO: Avaliar prospectivamente o nível de atividade física materna, em função do gasto energético em atividade, durante o segundo e terceiro trimestres gestacionais e sua influência sobre resultados perinatais (recém-nascidos pequenos para idade gestacional PIG e prematuridade). MÉTODOS: Foi realizado um estudo epidemiológico, prospectivo, longitudinal e observacional. Em função do cálculo amostral realizado para o estudo a coorte foi composta por 325 gestantes saudáveis que realizavam pré-natal no grupo de baixo risco gestacional do Hospital das Clínicas da Universidade de São Paulo. Foram inclusas apenas gestantes com até 25 semanas de gestação e feto único. Para avaliar a prática de atividade física materna utilizou-se no final do segundo e do terceiro trimestre de gestação o Questionário de Atividade Física na Gestação (PPAQ). Os dados clínicos utilizados para ajustar o modelo de regressão logística, bem como os resultados maternos e perinatais foram coletados do prontuário da paciente. Análise estatística: primeiramente foram criados os tercis de atividade física nos dois trimestres gestacionais estudados. Para responder o objetivo proposto foi utilizado Regressão Logística múltipla e dessa forma calculada a razão de chance (odds ratio) para cada variável da atividade física estudada com intervalos de confiança de 95% e nível de significância de 5%. RESULTADOS: No modelo de Regressão não-ajustado e também no modelo ajustado pelas variáveis controle analisadas, as variáveis da atividade física, bem como o tempo de trabalho semanal, não apresentaram associação estatisticamente significativa com a incidência de recém-nascidos PIG. Em relação à prematuridade, gestantes com maior nível de atividade física no segundo e terceiro trimestres gestacionais apresentam aproximadamente 63% e 61% respectivamente menos chance de prematuridade que gestantes com menor nível. CONCLUSÃO: O nível de atividade física no segundo ou terceiro trimestre gestacional, bem como o aumento ou diminuição no dispêndio energético em atividade, não está associado ao aumento no risco de recémnascidos pequenos para idade gestacional (PIG). Por outro lado, gestantes com maior nível de atividade física durante o segundo e também durante o terceiro trimestre de gestação apresentam menor chance de parto prematuro que gestantes com menor nível de atividade física nesses trimestres / INTRODUCTION: Physical activity has been shown to produce highly beneficial effects in terms of maternal/fetal health. However, there are still doubts as to the influence of physical activity during pregnancy as regards premature birth and low fetal weight. Seeing that premature birth and low fetal weight are known to be the greatest causes of infant mortality and morbidity, it is fundamental that the relationship between maternal physical activity and its perinatal effects be investigated in detail. OBJECTIVE: To assess the level of maternal physical activity prospectively, in terms of the expenditure of physical energy during the activity, during the second and third gestational trimesters, and its influence on the perinatal outcome (newborn children small for gestational age SGA and premature birth). METHODS: A prospective, longitudinal, epidemiological and observational study was undertaken. A cohort of 325 healthy pregnant women who were attending a prenatal care at the Hospital das Clínicas, of University of São Paulo school of Medicine, was composed on the basis of a sampling calculation. Only singleton pregnant women up to 25 gestational weeks were included. The Pregnancy Physical Activity Questionnaire (PPAQ) was used for the assessment of the practice of maternal physical activity at the end of the second and third trimesters of pregnancy. The clinical data used to adjust the logistic regression model, as also the maternal and perinatal results, were collected from the patients´ case histories. Statistical analysis: first, the terciles of the physical activity undertaken during the two gestational trimesters studied were created. Multiple logistic analysis was used to fulfill the objective proposed and the odds ratio was thus calculated for each variable of the physical activity studied, with a 95% confidence interval and a 5% level of significance. RESULTS: Neither in the non-adjusted Regression model nor in the model adjusted in accordance with the control variables analyzed, did the variables of physical activity, or the duration of the working week, present any statistically significant association with the incidence of SGA neonates. With regard to premature births, patients with a higher level of physical activity in the second and third gestational trimesters presented, respectively, 63% and 61% less chance of premature birth than did those with a lower level. CONCLUSION: The level of physical activity in the second or third gestational trimester, as also the increase or reduction of the expenditure of energy during activity, shows no association with any increase in the risk of the birth of new-born small for gestational age (SGA) children. On the other hand, patients with a higher level of physical activity during the second as also during the third trimester present a smaller chance of premature labor than the patients with a lower level of physical activity during those trimesters

Poucos estudos têm sido focados no grupo de recém-nascidos com peso insuficiente ao nascer (RNPI). Estes, apesar de terem um risco de morbimortalidade menor que os de baixo peso, apresentam elevada incidência no Brasil, 3 a 4 vezes maior do que o baixo peso, perfazendo cerca de 1/4 do total de nascidos vivos motivo pelo qual é importante se analisar os fatores de risco para esta condição. Realizou-se um estudo para verificar a incidência de RNPI no universo de nascimentos de uma maternidade pública de Cotia (SP) e a proporção destes que eram pequenos para a idade gestacional (PIG), acoplado a um estudo tipo caso-controle para identificar fatores de risco associados aos RNPI. A coleta de dados foi prospectiva com instrumentos padronizados e feita exclusivamente pela pesquisadora. Os dados foram coletados imediatamente após cada nascimento a partir dos registros hospitalares e de entrevistas com as mães. O estudo foi caso controle no qual o número total de 113 RNPI e um grupo controle de 112 RNPA. Entre os fatores de risco analisados (socioeconômicos, demográficos, maternos, gestacionais, de pré-natal e de nascimento), após uma fase de análise univariada por tabelas de contingência, comparação de médias e de medianas, bem como a realização de correlações, foram selecionadas as variáveis que tinham apresentado associação estatisticamente significante com os RNPI, que tivessem apresentado um valor máximo de p ao redor de 20por cento e excepcionalmente outras variáveis que apesar do resultado apresentassem boa plausibilidade (biológica ou epidemiológica) para inclusão num modelo de análise de regressão logística de múltiplas variáveis. A incidência observada de RNPI foi de 25,7por cento dos nascimentos, com uma proporção de 3,5por cento de PIG. Das 24 variáveis analisadas de maneira univariada, 6 permaneceram para serem incluídas na análise multivariada: a idade gestacional, número de consultas de pré-natal realizadas, presença de intercorrências no decorrer da gravidez e peso de nascimento do filho anterior, que haviam apresentado associação significante (p<0,05), e a presença ou ausência de filho anterior e o mês de início do pré-natal que, embora não significantes, haviam preenchido os critérios pré-estabelecidos para inclusão no modelo. Ao final da análise se mostram associadas aos RNPI apenas 2 variáveis: mês de início de pré-natal (OR: 1,114; p: 0,041) e o número de consultas (OR: 0,942; p:0,042). Como conclusão, o início precoce e um número mais elevado de consultas no pré-natal podem ser considerados como fatores de proteção para o risco de um peso de nascimento insuficiente / Few studies have been focused in insufficient birth weight (IBW).This group has a risk of morbimortality less than those of low birth weight (LBW), these have an elevated incidence in Brazil, 3 to 4 times bigger than the LBW, completing around 1/4 of the total of singletons born, it is important to analyses the risk factor for this condition. It carried out a study to check the incidence of IBW in the universe of singletons born in a public motherhood of Cotia (SP) and the proportion of this which they were small-for-gestational age (SGA) and a case-control study to identify the factors are associated to the IBW. The data was prospective with standardized instruments and done exclusively by the investigator. The data were collected immediately after each birth from the registers and interviews with the mothers. The study was compost from the total of the 113 IBW and a control´s group 112. The analyses of the risk factors are social and economic conditions, demographic condition, motherly, prenatal care and gestational. After the univariate analysis, there were selected the variables that had significant statistically association with the IWB, which had presented p around 20 per cent and exceptionally other were presenting good plausibility (biological or epidemiological) for inclusion in the multiple variables analysis. The incidence was 25,7 per cent IWB, with a proportion of 3,5 per cent for SGA. The 24 variables was analyses in the univariate analyses, 6 remained to be included in the multiple variables analysis: the gestational age, number of prenatal care consultations, intercurrences in the course of the pregnancy and the birth weight of the previous son, which had significant association (p<0,05), and the presence or absence of previous son and the month of beginning the prenatal care, though not significant, but they had filled out the criteria established-daily for inclusion in the multiple variables analysis. To the end of the analysis they are shown that 2 variables were associated to IWB: month of beginning the prenatal care (OR: 1,114; p: 0,041) and the number of prenatal care consultations (OR: 0,942; p: 0,042). As conclusion, the precocious beginning and a more elevated number of prenatal care consultations can be considered as protection factors for the risk of the IWB

Introduction: The attention on environmental impact on human health is rising. But, the association between particulate matter 2.5 and birth weight is still not acknowledged in the global burden of diseases, and the association has not yet been studied in the Philippines. The aim was to explore how increasing/decreasing concentrations of particulate matter 2.5 in pregnant women’s residence area was associated with the risk of having a child with low birth weight in the Philippines. Method: 1462 women pregnant in 2016 from the Demographic and Health Survey done in the Philippines in 2017 were analyzed by exposure to particulate matter 2.5 in their residence area. Particulate matter 2.5 was derived from the DIMAQ model, which estimated the annual mean exposure based on a mix of methods. A logistic regression adjusted for demographic variables and variables important for fetal growth, and the birth season was done. Results: The results of the logistic regression when adjusted for all variables showed that the non-statistically significant odds of low birth weight in the children from to the particulate matter 2.5 categories: 7-10 μg/m3, 11-14 μg/m3, and 15-18 μg/m3 were respectively 21% lower (CI: 0.42-1.50), 33% lower (CI: 0.39-1.21) and 34% lower (CI: 0.39-1.14) compared to the highest exposure category of 19-22 μg/m3. Discussion: The study had several limitations in regard to the study design, especially in dealing with seasonal changes in low birth weight. Yet, the study did not disagree with the results from similar studies done in other countries or globally.

Thesis (M.S.)--University of Texas Health Science Center at Houston, School of Public Health, 2008. / Source: Masters Abstracts International, Volume: 46-04, page: 2056. Adviser: Maureen Sanderson. Includes bibliographical references.

Thesis (M.N.)--Memorial University of Newfoundland, 1999. / Typescript. Bibliography: p. 113-123.

No description available.

Submitted by Renata Lopes (renatasil82@gmail.com) on 2016-12-15T14:26:56Z No. of bitstreams: 1 hericasilvadutra.pdf: 3223242 bytes, checksum: 250a7a107719f5970fd463ae5025faf6 (MD5) / Approved for entry into archive by Adriana Oliveira (adriana.oliveira@ufjf.edu.br) on 2016-12-15T14:39:16Z (GMT) No. of bitstreams: 1 hericasilvadutra.pdf: 3223242 bytes, checksum: 250a7a107719f5970fd463ae5025faf6 (MD5) / Made available in DSpace on 2016-12-15T14:39:16Z (GMT). No. of bitstreams: 1 hericasilvadutra.pdf: 3223242 bytes, checksum: 250a7a107719f5970fd463ae5025faf6 (MD5) Previous issue date: 2010-03-19 / Um aumento na sobrevida de recém-nascidos cada vez mais imaturos tem sido observado em consequência dos avanços em neonatologia. Crianças de muito baixo peso ao nascer (MBPN) e extremo baixo peso ao nascer (EBPN) podem apresentar como desfechos complicações a curto e longo prazo devido à assistência intensiva no período neonatal, o que pode determinar alterações em sua qualidade de vida (QV). Os objetivos foram avaliar a QV de crianças nascidas MBPN e EBPN a partir da utilização de questionário validado; descrever domínios incluídos no instrumento e estabelecer um perfil de satisfação da criança a partir do autorrelato e da perspectiva de seus responsáveis. Foram avaliadas 40 crianças e 45 responsáveis selecionados a partir dos dados do serviço de follow-up do HU-UFJF. A QV foi avaliada a partir do AUQUEI. Outros dados de interesse foram obtidos a partir de avaliação dos prontuários e inquérito direto ao responsável pela criança. A idade das crianças variou de 3 a 7 anos. O peso médio, ao nascer, foi 1173,13 (± 222,84). A idade gestacional variou de 24 a 33 semanas (29,40 ± 2,08). A QV média na avaliação das crianças foi de 49,75 (± 5,973) e na avaliação dos responsáveis 49,24 (± 6,675). A correlação entre os escores totais de crianças e responsáveis obteve intensidade de nível razoável (Correlação de Pearson = 0,391 / p = 0,013). Entretanto, a classificação final da QV (prejudicada x satisfatória), obteve concordância pobre (índice de Kappa = 0,143 / p = 0,457). A QV de crianças nascidas MBPN e EBPN foi considerada satisfatória na perspectiva delas mesmas e de seus responsáveis. A concordância entre os escores das crianças e seus pais foi alta. Entretanto a classificação em QV satisfatória e prejudicada teve concordância pobre, o que reforça a importância de valorizar o auto-relato de crianças e adicionar a perspectiva dos pais na avaliação da QV. O domínio lazer foi considerado o componente mais importante da QV na infância pelas crianças e responsáveis. / An increase in the number of more immature newborn survivors has been observed due to neonatology advances. Children born very low birth weight (VLBW) and extremity low birth weight (ELBW) can present as outcomes complications at short and long time, due to intensive care assistance in the neonatal period, what can determine alterations in their quality of life (QoL). This study aims: to evaluate the QoL of children born VLBW and ELBW using a validated questionnaire; to describe domains included in the instrument and to establish a satisfaction profile of the child using self-report and parent proxy-report. 40 children and 45 parents were selected from data at the follow-up service of the HU-UFJF. The QoL was evaluated using the AUQUEI. Other interest data had been collected from follow-up records and direct inquiry to the responsible one for the child. The age of the children varied from 3 to 7 years. The average birth weight was 1173,13g (± 222,84). The gestacional age varied from 24 to 33 weeks (29,40 ± 2,08). The QoL score in the self-report was 49,75 (± 5,973) and in the proxy-report was 49,24 (± 6,675). The correlation between the total scores of children and parents has got intensity of reasonable level (Correlation of Pearson = 0,391 / p = 0,013). However, the QoL final classification (damaged x satisfactory), got poor agreement between them (index of Kappa = 0,143 / p = 0,457). The QoL of children born VLBW and ELBW was considered satisfactory in the self-report and proxy-report. The total scores agreement between them were high, however the classification in satisfactory / damged QoL had poor agreement, what strengthens the importance to evaluate the self-report and to add the proxyreport of the QoL. The domain leisure was considered the most important component of the QoL in childhood by self and proxy-report.

O Câncer colorretal (CCR) é um problema de saúde importante devido a sua incidência e mortalidade elevadas. O rastreamento e o diagnóstico precoce são a principal estratégia para diminuir a mortalidade pelo CCR. A colonoscopia convencional (CC), constitui o melhor método para o diagnóstico precoce do CCR e para o diagnóstico e tratamento das lesões precurssoras. Entretanto a CC apresenta taxas de falha de detecção não desprezíveis. A colonoscopia com magnificação de imagem (CM), vem sendo utilizada com o intuito de melhorar a performance da CC. A sua principal vantagem é a possibilidade de diferenciar lesões neoplásicas de não-neoplásicas, de maneira que apenas lesões neoplásicas seriam retiradas, diminuindo custos e riscos relacionados ao rastreamento por colonoscopia. O objetivo deste estudo é determinar a acurácia da CM para o diagnóstico diferencial entre lesões neoplásicas e não-neoplásicas do intestino grosso por meio da comparação entre o diagnóstico endoscópico e o fornecido pelo exame histopatológico convencional. Entre abril de 2002 e outubro de 2003, cento e vinte pacientes foram incluídos no estudo, tendo-se encontrado 200 lesões. Todas as lesões foram classificadas endoscopicamente através da CM com alta magnificação (até 200X), associada a cromoscopia com índigo carmim, de acordo com a classificação proposta por Kudo, e em seguida excisadas ou biopsiadas para estudo histopatológico. A acurácia da determinação do diagnóstico diferencial endoscópico em relação à histopatologia entre lesões neoplásicas e não-neoplásicas foi de 78,5%. A diferença da CM em relação ao exame histopatológico foi estatisticamente significativa (p<0,0001). Conclui-se que, no atual estágio de desenvolvimento, a CM, pela sua acurácia, não permite excluir o exame histopatológico para o diagnóstico diferencial entre as lesões neoplásicas e não-neoplásicas do intestino grosso. / Bacterial meningitis in the neonatal period is a severe disease, associated to elevated mortality and sequelae in around 12 to 29% of the survivors. Newborns whose birth weight is < 2,500g have a 3-fold increase in the risk of acquiring meningitis when compared to those whose weight is > or = 2,500; among those with very low birth weight (< 1,500g), the risk increases 17-fold. Objectives: General: to describe the clinical picture and the complications of bacterial meningitis in two groups of newborns, considered according to birth weight (< 2,500g or > or = 2,500g). Specific: to describe and compare the etiological agents, the frequency of neurological signs and symptoms and complications, mortality rate and duration of treatment in both groups. Methods: Observational study of 87 newborns with bacterial meningitis, admitted at the Neonatal Intensive Care Unit (NICU) of Instituto da Criança of Hospital das Clínicas of the University of São Paulo School of Medicine, during an 11-year period (January 1994 to December 2004). The data were obtained through the analysis of hospital files. Statistical analysis was carried out with Fisher\'s exact test and the non-parametric Mann Whitney test. Results: Bacteria were identified in the cerebrospinal fluid (CSF) of 39% of the patients, with 50% of them being Gram-positive and 50%, Gram-negative. Most neonates presented unspecific signs and symptoms: fever (63.2%), irritability (31%), and lethargy (26.4%). The neurological findings occurred in 35.3% of the cases. Complications occurred in 48.2% of the neonates, and were mainly seizures (23%), intracranial hemorrhage (14.9%) and hydrocephalus (13.8%) with a mortality rate of 11.5%. At the comparison between clinical evolution and birth weight, associations between weight > or = 2,500g and seizures (p=0.047), weight > or = 2,500g and concave fontanel (p=0.019), bacteria in the CSF and complications (p=0.008) and bacteria in the CSF and death (p=0.043) were observed. Conclusions: The etiological agents most often identified in the CSF were enterobacteria (41%), followed by B Streptococcus (17.5%), non-B Streptococcus (17.5%), Staphylococcus aureus (11.7%), Neisseria meningitidis (8.8%) and Enterococcus faecalis (3.0%), with no statistical difference between the type of bacteria and birth weight. The predominant signs and symptoms were unspecific, with neurological findings in 35% of the cases. The higher frequency of neurological signs and symptoms in newborns with birth weight > or = 2,500g suggest a higher degree of central nervous system maturity in these infants. Although the mortality was lower than that observed in previous studies at the same Service, the frequency of complications was high, regardless of birth weight. The presence of bacteria in the CSF was associated to a higher frequency of seizures and mortality. The need for prolonged treatment in newborns with low birth weight suggests higher disease severity in this group of neonates.

Thesis (M.Med. (Paediatrics and Child Health)) -- University of Limpopo, 2019 / Objectives To determine the prevalence and survival rate; and to assess the maternal risk factors as well as complications of prematurity, associated with the mortality of very low and extremely low birth weight infants in the Neonatal Intensive Care Unit (NICU) of Mankweng Hospital. Materials and Methods A retrospective descriptive study was conducted at the NICU of Mankweng Hospital for a 7-month period from 1st January to 31st July 2015. The patient medical records and the Perinatal Problem Identification Programme (PPIP) data were used for the study. Results Prevalence of prematurity was 23%, Infants weighing between 500g-1499g represented 6.3% of the total live births and 25% of the admissions to the NICU; of which 4.9% were classified as extremely low birth weight (ELBW). Overall 77% of the study population survived until discharge. From the medical records, the survival to discharge of infants with weight 500g - 999g was 52%; and 84% for those with weight 1000g-1499g. Multivariable analysis found that improved survival was associated with an increase in gestational age (p <0.001), as well as birth weight (p <0.001) and prolonged length of stay. Variables associated with poor survival were spontaneous preterm labour (p = 0.031), low Apgar score at 1 and 5 minutes (p <0.001), sepsis (p = 0.001), respiratory distress syndrome (p <0.001), pulmonary hemorrhage (p <0.001), hypothermia (P = 0.005), resuscitation at birth (p = 0.002) and necrotising enterocolitis (p =0.044). Antenatal steroids were not associated with survival (p =0.111), however this was not documented in 53%(134/252) of the records, so the non-significance to outcome in this study may not be a true reflection. The use of NCPAP or SiPAP only was associated with improved survival of up to 69% and high mortality rates were recorded in babies who required invasive ventilator support. Multi-organ immaturity was found to be the most common cause of death, followed by sepsis. Conclusion: The prevalence and survival rates of very low and extremely low birth weight, found in this study are comparable to those found in other tertiary hospitals in South Africa. The survival rate of ELBW babies is low and must be improved. Reliable data and further research should address effective steps to prevent preterm labour, extreme prematurity and hypothermia. The documentation and provision of antenatal steroids is encouraged. KEY CONCEPTS: Prematurity, Extremely low and Very low birth weight, Risk factors, Prevalence, Survival, Neonatal mortality rate.

Doctor of Philosophy / Department of Animal Sciences and Industry / Jim L. Nelssen / Eleven-thousand one-hundred eighty-five pigs were used in 11 experiments to determine effects of birth-weight, feeder design, and dietary astaxanthin (AX) and ractopamine HCl (RAC) on growth, carcass, and pork quality characteristics of pigs. Also, data from 27 experiments were used in meta-analyses to improve prediction of pork fat iodine value (IV). In Exp. 1, increased birth-weight resulted in greater (quadratic, P < 0.05) pre-weaning survivability, ADG, final BW, and likelihood of achieving full-value market at 181-d of age. In Exp. 2, 3, 4, 6, 7, and 8, pigs using the wet-dry feeder (WD) had greater (P < 0.05) ADG, ADFI, and final BW than those using the conventional dry feeder (CD). Pigs using WD had poorer (P < 0.05) G:F in Exp. 3 and 4, and increased (P < 0.05) HCW and backfat depth in Exp. 3, 4, 6, and 7, compared to pigs fed using CD. In Exp. 5, pigs using WD from 19 to 38 kg had decreased (P < 0.02) ADFI and better G:F than pigs using CD. Increased feeder opening of WD increased (P < 0.05) ADG, ADFI, and final BW in Exp. 5, 6, and 7; as well as HCW and backfat depth in Exp. 6 and 7. Reducing WD opening at 28- and 56-d in Exp. 7 decreased (P < 0.05) ADG, ADFI, and backfat depth. Different openings of CD had little effect on performance in Exp. 5 and 6. In Exp. 8, changing water-source of WD to a separate location during late-finishing reduced (P < 0.05) overall ADG, ADFI, and final BW. Limited responses to AX were observed in Exp. 9, 10, and 11, but ADG, G:F, final BW, HCW, and fat-free lean were improved (P < 0.05) for pigs fed RAC in Exp. 10 and 11. Total color change during retail display of LM chops for gilts and pigs fed RAC was reduced (P < 0.05) in Exp. 10 and 11, indicating their color shelf-life improved. In the meta-analyses, models using dietary PUFA with ADG, BW, or backfat depth improved the fat IV prediction from R2 = 0.45 to R2 = 0.90.