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1.
Mil Med ; 188(Suppl 5): 48-52, 2023 09 04.
Artigo em Inglês | MEDLINE | ID: mdl-37665589

RESUMO

The Department of Veterans Affairs (VA) has launched an organization-wide transformation to a Whole Health System of Care, which relies heavily on Health and Wellness Coaching. A brief history and overview of Health and Wellness Coaching, in general, is provided, along with specific developments within VA, selected evaluation results, and coordination to date with the Department of Defense. As VA's Whole Health transformation reaches maturity, there is an opportunity to adopt VA's Health and Wellness Coaching approach into the Department of Defense's Total Force Fitness efforts with integration at the unit level.


Assuntos
Tutoria , Estados Unidos , Humanos , Exercício Físico , Veículos Automotores
2.
Front Microbiol ; 13: 893801, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-35707164

RESUMO

Background: There is an urgent need for harmonization between severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) serology platforms and assays prior to defining appropriate correlates of protection and as well inform the development of new rapid diagnostic tests that can be used for serosurveillance as new variants of concern (VOC) emerge. We compared multiple SARS-CoV-2 serology reference materials to the WHO International Standard (WHO IS) to determine their utility as secondary standards, using an international network of laboratories with high-throughput quantitative serology assays. This enabled the comparison of quantitative results between multiple serology platforms. Methods: Between April and December 2020, 13 well-characterized and validated SARS-CoV-2 serology reference materials were recruited from six different providers to qualify as secondary standards to the WHO IS. All the samples were tested in parallel with the National Institute for Biological Standards and Control (NIBSC) 20/136 and parallel-line assays were used to calculate the relevant potency and binding antibody units. Results: All the samples saw varying levels of concordance between diagnostic methods at specific antigen-antibody combinations. Seven of the 12 candidate materials had high concordance for the spike-immunoglobulin G (IgG) analyte [percent coefficient of variation (%CV) between 5 and 44%]. Conclusion: Despite some concordance between laboratories, qualification of secondary materials to the WHO IS using arbitrary international units or binding antibody units per milliliter (BAU/ml) does not provide any benefit to the reference materials overall, due to the lack of consistent agreeable international unit (IU) or BAU/ml conversions between laboratories. Secondary standards should be qualified to well-characterized reference materials, such as the WHO IS, using serology assays that are similar to the ones used for the original characterization of the WHO IS.

3.
Diagn Microbiol Infect Dis ; 104(1): 115741, 2022 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-35767925

RESUMO

Although measles was eliminated in the United States in 2000, a severe outbreak occurred between October 2018 and September 2019. New York was especially hard hit. Serology played an integral role in determining immune status (IgG) and identifying, along with molecular analyses, acute measles infections (IgM). Although an indirect immunofluorescence assay (IFA) was historically used by the New York State Department of Health for measles IgM detection, a higher throughput assay was needed to address the increased specimen numbers. Four commercial enzyme-linked immunosorbent assays (ELISAs) were evaluated for sensitivity and specificity in detecting measles IgM. Two ELISA formats were compared, indirect ELISA and IgM antibody capture. Both formats had comparable specificity as determined by cross-reactivity to non-measles specimens. Overall, the sensitivity of the capture ELISAs was greater than the indirect ELISAs and comparable to the indirect immunofluorescence assay with benefits regarding capacity, cost, and turnaround time.


Assuntos
Anticorpos Antivirais , Sarampo , Surtos de Doenças , Ensaio de Imunoadsorção Enzimática , Humanos , Imunoglobulina M , Sarampo/diagnóstico , Sarampo/epidemiologia , New York/epidemiologia , Sensibilidade e Especificidade , Testes Sorológicos
4.
Am J Trop Med Hyg ; 106(2): 562-565, 2022 01 07.
Artigo em Inglês | MEDLINE | ID: mdl-34996045

RESUMO

The dried-tube specimen (DTS) procedure was used to develop the COVID-19 serology control panel (CSCP). The DTS offers the benefit of shipping materials without a cold chain, allowing for greater access without deterioration of material integrity. Samples in the panel were sourced from COVID-19 convalescent persons from March to May 2020. The immunoglobulin subtypes (total Ig, IgM, and IgG) and their respective reactivity to severe acute respiratory syndrome coronavirus 2 nucleocapsid, spike, and receptor-binding domain antigens of the samples were delineated and compared with the WHO International Standard to elucidate the exact binding antibody units of each CSCP sample and ensure the CSCP provides adequate reactivity for different types of serological test platforms. We distribute the CSCP as a kit with five coded tubes to laboratories around the world to be used to compare test kits for external quality assurance, for harmonizing laboratory testing, and for use as training materials for laboratory workers.


Assuntos
Teste Sorológico para COVID-19/métodos , COVID-19/diagnóstico , SARS-CoV-2/imunologia , Manejo de Espécimes/métodos , Anticorpos Antivirais/sangue , Teste Sorológico para COVID-19/normas , Proteínas do Nucleocapsídeo de Coronavírus/imunologia , Humanos , Imunoglobulina G/sangue , Imunoglobulina M/sangue , Manejo de Espécimes/normas , Glicoproteína da Espícula de Coronavírus/imunologia , Organização Mundial da Saúde
5.
Cell Rep Med ; 2(7): 100329, 2021 07 20.
Artigo em Inglês | MEDLINE | ID: mdl-34151306

RESUMO

Coronavirus disease 2019 (COVID-19) is associated with a wide spectrum of disease presentation, ranging from asymptomatic infection to acute respiratory distress syndrome (ARDS). Paradoxically, a direct relationship has been suggested between COVID-19 disease severity and the levels of circulating severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2)-specific antibodies, including virus-neutralizing titers. A serological analysis of 536 convalescent healthcare workers reveals that SARS-CoV-2-specific and virus-neutralizing antibody levels are elevated in individuals that experience severe disease. The severity-associated increase in SARS-CoV-2-specific antibody is dominated by immunoglobulin G (IgG), with an IgG subclass ratio skewed toward elevated receptor binding domain (RBD)- and S1-specific IgG3. In addition, individuals that experience severe disease show elevated SARS-CoV-2-specific antibody binding to the inflammatory receptor FcÉ£RIIIa. Based on these correlational studies, we propose that spike-specific IgG subclass utilization may contribute to COVID-19 disease severity through potent Fc-mediated effector functions. These results may have significant implications for SARS-CoV-2 vaccine design and convalescent plasma therapy.


Assuntos
Anticorpos Antivirais/sangue , COVID-19/sangue , Imunoglobulina G/sangue , Adulto , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , SARS-CoV-2/imunologia , Índice de Gravidade de Doença
6.
Psychiatr Psychol Law ; 27(2): 300-314, 2020.
Artigo em Inglês | MEDLINE | ID: mdl-32944128

RESUMO

'Communication assistance' is a term that derives from section 80 of the Evidence Act 2006: a legislative provision that has given birth to a whole new profession in the New Zealand legal system. This legislative provision has been used to appoint a new role: that of the communication assistant to support complainants, witnesses and defendants of all ages with identified communication needs. This study focuses specifically on the provision of communication assistance for young people who offend in the New Zealand criminal justice system. It provides a qualitative analysis of professionals' descriptions (n = 28 participants) of communication assistance for this population in justice processes. The findings illustrate that communication assistance shares its core with a similar role in England and Wales, that of the intermediary, but that communication assistants in New Zealand have broader scope than their counterparts working in the area of youth justice.

8.
ACS Chem Neurosci ; 9(3): 404-420, 2018 03 21.
Artigo em Inglês | MEDLINE | ID: mdl-29308873

RESUMO

The pathogenesis underlining many neurodegenerative diseases remains incompletely understood. The lack of effective biomarkers and disease preventative medicine demands the development of new techniques to efficiently probe the mechanisms of disease and to detect early biomarkers predictive of disease onset. Raman spectroscopy is an established technique that allows the label-free fingerprinting and imaging of molecules based on their chemical constitution and structure. While analysis of isolated biological molecules has been widespread in the chemical community, applications of Raman spectroscopy to study clinically relevant biological species, disease pathogenesis, and diagnosis have been rapidly increasing since the past decade. The growing number of biomedical applications has shown the potential of Raman spectroscopy for detection of novel biomarkers that could enable the rapid and accurate screening of disease susceptibility and onset. Here we provide an overview of Raman spectroscopy and related techniques and their application to neurodegenerative diseases. We further discuss their potential utility in research, biomarker detection, and diagnosis. Challenges to routine use of Raman spectroscopy in the context of neuroscience research are also presented.


Assuntos
Biomarcadores/análise , Doenças Neurodegenerativas/diagnóstico por imagem , Análise Espectral Raman , Análise Espectral , Animais , Humanos , Microscopia , Pesquisa , Análise Espectral/métodos , Análise Espectral Raman/métodos
9.
Paediatr Anaesth ; 24(3): 290-6, 2014 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-24219512

RESUMO

AIMS: To determine whether there is evidence of implicit memory formation during pediatric anesthesia using the word stem completion task. BACKGROUND: In adults, there is mixed evidence for implicit memory formation during anesthesia; however, there is no evidence in children. Implicit memory in adults has been detected using the word stem completion task. This test has not been used in a pediatric anesthetic setting. METHODS: A total of 200 patients aged 7-12 were randomized to hear one of the two lists of 10 words played continuously while anesthetized. Group 1 heard List A and Group 2 heard List B. Postoperatively, 194 completed a word stem completion task where they were required to complete the stems (the first part of words) corresponding to the words on the two word lists combined, with the first word that came to mind. RESULTS: Group 1 completed a mean of 2.78 words correctly from List A and a mean of 2.70 words correctly from List B. Group 2 completed a mean of 3.29 words correctly from List A and a mean of 3.66 words correctly from List B. For List A, there was no evidence (P = 0.70) for an association between intraoperative exposure to this list and the odds of successfully completing a stem from this list with the corresponding target word. There was little evidence (P = 0.09) for an association with List B. CONCLUSION: This study found no strong evidence that children form implicit memories for auditory words during anesthesia. Given the difference between lists, future research is warranted using carefully chosen word stems.


Assuntos
Anestesia/psicologia , Memória/fisiologia , Testes Neuropsicológicos , Criança , Monitores de Consciência , Método Duplo-Cego , Humanos , Modelos Logísticos , Rememoração Mental/fisiologia
10.
Hypertens Res ; 35(3): 318-24, 2012 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-22170389

RESUMO

African Americans have a fourfold greater likelihood of developing end-stage renal disease (ESRD) compared with Caucasians. It has been proposed that the increased prevalence may be explained by non-traditional factors such as environmental stress and psychosocial factors. In this study, we used infrequent running to exhaustion as a physiological stressor to mimic real life experiences, such walking up stairs when an elevator is malfunctioning or running to catch a bus, to study its effect on renal injury in a hypertensive mouse model (endothelial nitric oxide synthase-deficient mice; eNOS(-/-)). This model has previously been shown to have renal injury comparable to that observed in African Americans. The effect of physiological stress on renal injury was examined in the setting of low (0.12%), control (0.45%) and high (8%) dietary salt. Following bouts of physiological stress, eNOS(-/-) mice had significantly greater interstitial inflammation compared with unstressed eNOS(-/-) mice (two-way analysis of variance (2-ANOVA), Holm-Sidak; P<0.01). Interestingly, eNOS(-/-) mice on a high-salt diet had greater interstitial inflammation compared with similarly stressed eNOS(-/-) mice on a low- or control-salt diet (2-ANOVA, Holm-Sidak; P<0.03). These effects of stress were independent of systolic blood pressure (141±7, 143±4, and 158±8 vs. 141±4, 138±5, 150±4 mm Hg; end of study vs. baseline, respectively). There was no significant effect of stress or dietary salt on renal injury in control wild-type mice (eNOS(+)/(+)). These data demonstrate that physiological stress exacerbates the renal injury associated with hypertension and that high-salt compounds this effect of stress. These results provide support for the idea that psychosocial and environmental factors contribute to the increased prevalence of ESRD in hypertensive African Americans.


Assuntos
Nefropatias/enzimologia , Nefropatias/fisiopatologia , Rim/fisiopatologia , Óxido Nítrico Sintase Tipo III/deficiência , Estresse Fisiológico/fisiologia , Animais , Pressão Sanguínea/efeitos dos fármacos , Pressão Sanguínea/fisiologia , Modelos Animais de Doenças , Hipertensão/induzido quimicamente , Hipertensão/complicações , Rim/efeitos dos fármacos , Rim/patologia , Camundongos , Camundongos Endogâmicos C57BL , Camundongos Knockout , Óxido Nítrico Sintase Tipo III/genética , Óxido Nítrico Sintase Tipo III/fisiologia , Condicionamento Físico Animal/fisiologia , Cloreto de Sódio na Dieta/efeitos adversos , Cloreto de Sódio na Dieta/farmacologia
11.
Paediatr Anaesth ; 21(9): 942-50, 2011 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-21726352

RESUMO

BACKGROUND: Emergence delirium (ED) frequently occurs in young children awakening from general anesthesia (GA). To date, research is limited by scales that are unable to discriminate the condition from other forms of agitation. AIM: The primary aim of this study was to determine the core behaviors of ED that discriminate the condition from pain and tantrum in young children and to cluster these behaviors according to the DSM-IV/V core diagnostic criteria and associated behaviors of delirium. METHOD: Children aged 18 months to 6 years (n=198) were observed upon awakening from GA following surgical or nonsurgical procedures to determine which behaviors categorize ED. Behaviors were recorded via a structured behavioral observation. Clinical opinion was sought to determine whether the child presented ED, pain, or tantrum. RESULTS: A chi-square analysis revealed children with ED were significantly more likely to display activity, nonpurposefulness, eyes averted, stared or closed, no language, and nonresponsivity. These behaviors were not significantly associated with pain or tantrum. A logistic regression showed eyes averted or stared and nonpurposefulness were significant predictors of ED, while no language and activity were not significant predictors of ED. CONCLUSIONS: Children with ED are significantly more likely to display nonpurposefulness, eyes averted, stared or closed, and nonresponsivity. These behaviors were not significantly associated with pain or tantrum and are believed to reflect the DSM-IV/V diagnostic criteria for delirium. Associated behaviors of ED identified by this research are irrelevant language, activity, and vocalization.


Assuntos
Anestesia Geral/efeitos adversos , Comportamento Infantil , Delírio/etiologia , Delírio/psicologia , Complicações Pós-Operatórias/psicologia , Período de Recuperação da Anestesia , Anestésicos , Criança , Pré-Escolar , Análise por Conglomerados , Delírio/diagnóstico , Manual Diagnóstico e Estatístico de Transtornos Mentais , Feminino , Humanos , Lactente , Masculino , Dor Pós-Operatória/epidemiologia , Dor Pós-Operatória/psicologia , Pais , Complicações Pós-Operatórias/diagnóstico
12.
J Dev Behav Pediatr ; 32(3): 239-49, 2011 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-21317804

RESUMO

OBJECTIVE: Language problems are thought to occur more frequently in very preterm children compared with healthy term born children. The primary aim of this study was to examine the contributions of biological and environmental risk factors to language outcomes in very preterm children at 5 years of age. METHODS: A cohort of 227 very preterm infants (birth weight <1250 g or gestational age <30 weeks) were recruited at birth and followed up at 2 and 5 years of age (corrected for prematurity) in a prospective, longitudinal study in Melbourne, Australia. Outcomes at 5 years of age were the Expressive and Receptive Language Scales from the Kaufman Survey of Early Academic and Language Skills. A range of hypothesized biological and environmental factors identified from past research were examined as predictors of language outcomes at 5 years of age using linear regression models. RESULTS: Lower maternal education and poorer communication skills in the child at 2 years of age were predictive of poorer expressive and poorer receptive language outcomes at 5 years of age. Lower expressive language scores were also associated with the presence of moderate-severe white matter abnormalities on neonatal magnetic resonance imaging. CONCLUSIONS: Results support the role of both biological and environmental factors in the evolution of language difficulties and highlight the need to consider these factors in the follow-up of preterm infants.


Assuntos
Desenvolvimento Infantil/fisiologia , Linguagem Infantil , Recém-Nascido Prematuro/crescimento & desenvolvimento , Desenvolvimento da Linguagem , Meio Social , Pré-Escolar , Estudos de Coortes , Feminino , Idade Gestacional , Humanos , Recém-Nascido , Testes de Linguagem , Masculino , Fatores de Risco
13.
Paediatr Anaesth ; 20(10): 913-23, 2010 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-20849496

RESUMO

BACKGROUND: Past research examining the psychosocial impact of general anesthesia and day case surgery on children has been hampered by a lack of valid and reliable assessment tools. AIM: The purpose of the current study was to assess the feasibility of using a well-validated scale (i.e. the Pediatric Quality of Life Inventory Generic Core Scales Version 4.0, PedsQL) in the perioperative setting and to establish changes seen in a sample of children having day case surgery when using this scale. METHOD: Eighty-nine children (aged 3-12 years) scheduled for general anesthesia for day case tonsillectomy or ear tube insertions were recruited into a prospective study in Melbourne, Australia. Parents completed the PedsQL and the Post Hospitalization Behavioral Questionnaire (PHBQ), and children completed the PedsQL (child self-report) at baseline (preanesthesia), 7 days following anesthesia and 30 days following anesthesia. RESULTS: The response rate at day 7 and day 30 was modest but when returned the PedsQL and PHBQ had minimal missing data. On the PedsQL, parents rated children's physical functioning as worse at day 7 than at baseline but psychosocial functioning did not differ significantly from baseline. At 30 days, both physical and psychosocial functioning was rated by parents to be better than baseline levels. From children's perspective, there was little evidence of a change in their physical or psychosocial functioning on the self-report PedsQL at day 7, but by day 30 both physical and psychosocial functioning was above baseline levels. A similar pattern was observed on the PHBQ, with little difference in ratings of behavioral problems between baseline and day 7, but less behavioral problems reported at day 30 compared with baseline. CONCLUSIONS: The PedsQL is feasible for use in the perioperative setting. Future studies should take into account the possibility that deterioration of psychosocial functioning is uncommon at 1 -month postsurgery compared to the preoperative baseline.


Assuntos
Anestesia Geral , Comportamento Infantil/efeitos dos fármacos , Tuba Auditiva/cirurgia , Qualidade de Vida , Tonsilectomia/psicologia , Adenoidectomia , Fatores Etários , Procedimentos Cirúrgicos Ambulatórios , Criança , Pré-Escolar , Estudos de Coortes , Estudos de Viabilidade , Feminino , Humanos , Masculino , Estudos Prospectivos , Medição de Risco , Fatores Sexuais , Comportamento Social , Inquéritos e Questionários , Resultado do Tratamento
14.
Pediatrics ; 123(2): 555-61, 2009 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-19171622

RESUMO

OBJECTIVE: There is an increasing focus on social and environmental factors that promote and support the early development of highly vulnerable children such as those born very preterm. The aim of this study was to assess the relationship between parenting behavior, parent-child synchrony, and neurobehavioral development in very preterm children at 24 months of age. METHODS: Participants were 152 very preterm children (<30 weeks' gestation or <1250 g birth weight) and their parents/guardians. At 2 years' corrected age, parents/guardians and children completed a semistructured parent-child interaction task assessing dyad synchrony and parenting behavior (positive affect, negative affect, sensitivity, facilitation, and intrusiveness). Cognitive and motor development was assessed by using the Bayley Scales of Infant Development II, and the Infant Toddler Social and Emotional Assessment was used to assess socioemotional development (social-emotional competence and internalizing and externalizing behavior). RESULTS: fter controlling for social risk, most parenting domains were associated with cognitive development, with parent-child synchrony emerging as the most predictive. Greater parent-child synchrony was also associated with greater social-emotional competence, as was parenting that was positive, warm, and sensitive. Parents who displayed higher levels of negative affect were more likely to rate their children as withdrawn, anxious, and inhibited, but, unexpectedly, higher negative affect was also associated with more optimal psychomotor development. Parenting was not associated with externalizing behaviors at this age. CONCLUSIONS: Specific parenting behaviors, particularly parent-child synchrony, were associated with neurobehavioral development. These findings have implications for the development of targeted parent-based interventions to promote positive outcomes across different developmental domains during the first 2 years of life for very preterm children.


Assuntos
Deficiências do Desenvolvimento/prevenção & controle , Comportamento do Lactente , Recém-Nascido Prematuro/crescimento & desenvolvimento , Comportamento Materno , Comportamento Paterno , Adulto , Pré-Escolar , Feminino , Humanos , Recém-Nascido , Masculino , Pessoa de Meia-Idade , Adulto Jovem
15.
Brain ; 131(Pt 11): 2986-94, 2008 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-18799516

RESUMO

Children born preterm exhibit working memory deficits. These deficits may be associated with structural brain changes observed in the neonatal period. In this study, the relationship between neonatal regional brain volumes and working memory deficits at age 2 years were investigated, with a particular interest in the dorsolateral prefrontal cortex, parietal cortex and the hippocampus. While the eligible sample consisted of 227 very preterm children who were born at the Royal Women's Hospital, Melbourne prior to 30 weeks gestation or weighing <1250 g, 156 children had complete data sets. Neonatal magnetic resonance images of the brain were obtained at term equivalent age and subsequently parcellated into eight sub-regions, while the hippocampus was manually segmented. The relationship between brain volumes for these regions and performance on a working memory task (delayed alternation) at 2 years of age was examined. Very preterm children who perseverated on the working memory task had significantly smaller hippocampal volumes than very preterm children who exhibited intact working memory, even after adjusting for relevant perinatal, sociodemographic and developmental factors. Preterm children appear to have altered hippocampal volumes by discharge from hospital which may have a lasting impact on working memory function.


Assuntos
Deficiências do Desenvolvimento/etiologia , Hipocampo/patologia , Recém-Nascido Prematuro/psicologia , Transtornos da Memória/etiologia , Memória de Curto Prazo , Desenvolvimento Infantil , Pré-Escolar , Deficiências do Desenvolvimento/patologia , Feminino , Seguimentos , Idade Gestacional , Humanos , Recém-Nascido , Recém-Nascido de muito Baixo Peso/psicologia , Imageamento por Ressonância Magnética/métodos , Masculino , Transtornos da Memória/patologia , Prognóstico
16.
Pediatrics ; 121(6): e1534-40, 2008 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-18519457

RESUMO

OBJECTIVE: Extremely preterm birth is associated with adverse neurodevelopmental sequelae. Head circumference has been used as a measure of brain growth. There are limited data relating head circumference to MRI. The purpose of this work was to establish the relationship between head circumference with brain MRI at term-equivalent age and to relate head circumference with neurodevelopmental outcome at 2 years. PATIENTS AND METHODS: Two hundred and twenty-seven preterm infants (birth weight of <1250 g or <30 weeks' gestation) were recruited. Head circumference was measured at birth, term, and 2 years' corrected age, and z scores were computed. Microcephaly was defined as a head circumference z score of less than -2 SDs for age and gender. MRI scans at term (n = 214) were graded for white and gray matter abnormalities, and segmented volumes were calculated for different tissue types. Outcome at 2 years' corrected age (n = 202) included scores on the Bayley Scales of Infant Development II. RESULTS: Microcephaly increased from 7.5% at term to 29.7% at 2 years. There was no significant relationship between head circumference and white or gray matter abnormalities on MRI. There was a strong correlation between head circumference and brain volume at term. At term, microcephalic infants had significantly decreased volumes for total brain tissue and most segmented volumes compared with infants with normal head circumference, but only deep nuclear gray matter volume remained significantly lower when adjusted for total intracranial volume. At 2 years, microcephaly was associated with poorer cognitive and motor development and an increased rate of cerebral palsy. CONCLUSIONS: Brain volume is a determinant of head size at term. Microcephaly is associated with a reduction of brain tissue volumes, especially deep nuclear gray matter, which suggests a selective vulnerability. Poor postnatal head growth in preterm infants becomes more evident by 2 years and is strongly associated with poor neurodevelopmental outcome and cerebral palsy.


Assuntos
Encéfalo/patologia , Cabeça/crescimento & desenvolvimento , Recém-Nascido Prematuro/crescimento & desenvolvimento , Imageamento por Ressonância Magnética , Sistema Nervoso/crescimento & desenvolvimento , Cefalometria , Feminino , Humanos , Recém-Nascido , Masculino , Tamanho do Órgão
17.
J Paediatr Child Health ; 44(5): 276-80, 2008 May.
Artigo em Inglês | MEDLINE | ID: mdl-17999667

RESUMO

AIM: Preterm birth is increasing in prevalence and long-term follow-up studies have documented high rates of neurosensory, intellectual, academic and behavioural disabilities. The importance of early intervention (EI) is well recognised but significant barriers to receiving EI exist in the community. This study explores the association of levels of disability at age 2 years with EI services and social risk in a large cohort of very preterm children. METHODS: This was a cohort study of 236 very preterm (gestational age < 30 weeks or birthweight < 1250 g) infants recruited at birth. Children were assessed comprehensively at age 2 years, and EI and social risk data were gathered via parental questionnaire. Disability levels were assigned as none, mild, or moderate to severe. The relationships of disability level to EI services and social risk were determined. RESULTS: Of the initial cohort, data from 227 (97%) were available at age 2 years. Overall, 50.7% (115/227) of children had some disability. A significant difference was present (P < 0.001) between the rates of EI and disability, with only 27.9% of children with a mild disability receiving EI services compared with 51.1% of children with a moderate to severe disability. After adjustment for level of disability, those of higher social risk were less likely to receive EI services (odds ratio 0.25; 95% confidence interval 0.11-0.56; P = 001). CONCLUSIONS: Currently available follow-up, referral and EI services underserve the most vulnerable children in our community, those with a combination of biological and social risk factors for developmental disabilities.


Assuntos
Serviços de Saúde da Criança/estatística & dados numéricos , Deficiências do Desenvolvimento , Crianças com Deficiência/estatística & dados numéricos , Nascimento Prematuro , Pré-Escolar , Estudos de Coortes , Deficiências do Desenvolvimento/diagnóstico , Deficiências do Desenvolvimento/terapia , Humanos , Recém-Nascido , Recém-Nascido Prematuro/crescimento & desenvolvimento , Razão de Chances , Medição de Risco , Classe Social , Inquéritos e Questionários
18.
N Engl J Med ; 355(7): 685-94, 2006 Aug 17.
Artigo em Inglês | MEDLINE | ID: mdl-16914704

RESUMO

BACKGROUND: Very preterm infants are at high risk for adverse neurodevelopmental outcomes. Magnetic resonance imaging (MRI) has been proposed as a means of predicting neurodevelopmental outcomes in this population. METHODS: We studied 167 very preterm infants (gestational age at birth, 30 weeks or less) to assess the associations between qualitatively defined white-matter and gray-matter abnormalities on MRI at term equivalent (gestational age of 40 weeks) and the risks of severe cognitive delay, severe psychomotor delay, cerebral palsy, and neurosensory (hearing or visual) impairment at 2 years of age (corrected for prematurity). RESULTS: At two years of age, 17 percent of infants had severe cognitive delay, 10 percent had severe psychomotor delay, 10 percent had cerebral palsy, and 11 percent had neurosensory impairment. Moderate-to-severe cerebral white-matter abnormalities present in 21 percent of infants at term equivalent were predictive of the following adverse outcomes at two years of age: cognitive delay (odds ratio, 3.6; 95 percent confidence interval, 1.5 to 8.7), motor delay (odds ratio, 10.3; 95 percent confidence interval, 3.5 to 30.8), cerebral palsy (odds ratio, 9.6; 95 percent confidence interval, 3.2 to 28.3), and neurosensory impairment (odds ratio, 4.2; 95 percent confidence interval, 1.6 to 11.3). Gray-matter abnormalities (present in 49 percent of infants) were also associated, but less strongly, with cognitive delay, motor delay, and cerebral palsy. Moderate-to-severe white-matter abnormalities on MRI were significant predictors of severe motor delay and cerebral palsy after adjustment for other measures during the neonatal period, including findings on cranial ultrasonography. CONCLUSIONS: Abnormal findings on MRI at term equivalent in very preterm infants strongly predict adverse neurodevelopmental outcomes at two years of age. These findings suggest a role for MRI at term equivalent in risk stratification for these infants.


Assuntos
Encéfalo/patologia , Deficiências do Desenvolvimento/epidemiologia , Recém-Nascido Prematuro , Imageamento por Ressonância Magnética , Paralisia Cerebral , Pré-Escolar , Cognição , Deficiências do Desenvolvimento/diagnóstico , Ecoencefalografia , Feminino , Idade Gestacional , Humanos , Recém-Nascido , Estudos Longitudinais , Masculino , Valor Preditivo dos Testes , Desempenho Psicomotor , Fatores de Risco
19.
Pediatr Res ; 60(1): 97-102, 2006 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-16690952

RESUMO

A substantial number of prematurely born infants will experience later neurodevelopmental challenges. Abnormal development of the cerebellum may be related to some of the impairments exhibited by preterm children. To test the hypothesis that cerebellar development is structurally impaired in preterm infants and associated with adverse outcomes, we studied 83 preterm infants and 13 term controls using volumetric magnetic resonance imaging techniques to obtain cerebellar volumes (CV) at term corrected and subsequent neurodevelopmental assessment at 2 y of age. The preterm group had smaller mean CV at term compared with the term control infants [mean (SD) CV, 22.0 (5.0) versus 23.5 (5.0) cc; mean difference (95% confidence interval), 1.5 (-1.5, 4.4)] although this did not reach statistical significance. Within the preterm group, there was evidence of a reduction in CV related to the presence of white matter injury (WMI) after adjusting for intracranial volume (ICV) [WMI grade 1 versus grade 2: mean (SD) CV, 23.6 (5.0) versus 21.6 (4.5); p = 0.01; WMI grade 1 versus grade 3 and 4: 23.6 (5.0) versus 20.8 (5.6); p = 0.07]. Within the preterm infants, there was no apparent relationship between CV at term and gestational age at birth after adjusting for ICV. At 2 y of age, CV showed a weak correlation with cognitive and motor development, although this was principally mediated by WMI. In conclusion, we found no evidence for a primary impairment in cerebellar development in relation to prematurity, although there was evidence for a secondary effect of cerebral WMI on cerebellar development independent of immaturity.


Assuntos
Cerebelo/anatomia & histologia , Cerebelo/patologia , Desenvolvimento Infantil/fisiologia , Recém-Nascido Prematuro/crescimento & desenvolvimento , Sistema Nervoso/crescimento & desenvolvimento , Envelhecimento/patologia , Envelhecimento/fisiologia , Cerebelo/crescimento & desenvolvimento , Pré-Escolar , Cognição/fisiologia , Feminino , Seguimentos , Humanos , Recém-Nascido , Recém-Nascido Prematuro/fisiologia , Imageamento por Ressonância Magnética , Masculino , Atividade Motora/fisiologia , Sistema Nervoso/anatomia & histologia , Sistema Nervoso/patologia , Tamanho do Órgão , Desempenho Psicomotor/fisiologia
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