Growth references for height, weight, and head circumference for Argentine children with achondroplasia.

UNLABELLED: In order to prepare growth references for height, weight, and head circumference for Argentine children with Achondroplasia, 228 children (114 boys) aged 0-18 years attending the Growth Clinic at Hospital Garrahan were measured between 1992 and 2009. Centiles were calculated by LMS, a method for summarizing growth data which adjusts for skewness. Curves for centiles are obtained using the formula: [Formula: see text], where Z (α) is the normal equivalent deviate for tail area α; C100α is the weight or height centile corresponding to Z (α), t is age in years, and L(t) is (skewness)(t), M(t) is median, S (t) is coefficient variation and C(100α) (t) indicates the corresponding values of each curve at age t. Boys and girls centiles for height were similar to USA references in infancy and childhood but lower than that references at adolescence. Final height was 1.7 and 5.1 cm below USA achondroplasia references in girls and boys, respectively. Head circumference centiles were, at all ages, lower than USA references in both genders. Countries need national references for clinical growth assessment of their local population. Likewise, specific local growth references for children with some genetic conditions (such us achondroplasia) are valuable tools for detecting additional conditions affecting growth, for estimating final height and for evaluating the impact of growth-promoting treatments. CONCLUSION: references presented here can also be used in other countries with similar ethnographics characteristics.

Sex differences in the canalization of child growth and development: An example of genetic regulation. / Diferencias de sexo en la canalización del crecimiento y del desarrollo infantil: un ejemplo de regulación genética.

In case of a disease or nutritional deficit, the growth curve may show deviations from the percentile it was depicting, and once damage is removed, a strong regulatory force tends to restore its path. Such phenomenon is known as catch-up growth and is an example of canalization of growth. Girls are more favored than boys because, when faced with the same damage, their growth (and also their psychomotor development) shows less deviation than that of boys. Such difference is also shown in a higher prevalence among boys of growth retardation in general and some developmental disorders, including autism spectrum disorder and cerebral palsy. Infant mortality is lower in girls at all ages and life expectancy is several years longer in women from all countries. The cause of such differences in favor of girls has a strong genetic component and is enriching for the interpretation of clinical and epidemiological studies.

Ante una enfermedad o carencia nutricional, la curva de crecimiento puede desviarse del percentil que recorría, y cuando el daño es neutralizado, hay una fuerza regulatoria que tiende a restaurar su trayectoria. Este fenómeno, llamado crecimiento compensatorio o catch-up, es un ejemplo de canalización del crecimiento. Las niñas se ven favorecidas respecto de los niños porque, ante un mismo daño, su crecimiento (y también su desarrollo psicomotor) se desvía menos que el de los niños. Esta diferencia también se expresa en una mayor prevalencia masculina de retraso del desarrollo en general y de algunos trastornos del desarrollo, como trastorno del espectro autista y parálisis cerebral, entre otros. La mortalidad infantil es menor en niñas a todas las edades y la esperanza de vida es varios años mayor en mujeres en todos los países. La causa de estas diferencias a favor de las niñas tiene un fuerte componente genético y enriquece la interpretación de estudios clínicos y epidemiológicos.

Short-term growth in head circumference and its relationship with supine length in healthy infants.

BACKGROUND: Daily changes in height have been found to be a non-linear process. Its exact pattern is still controversial. In previous studies on 34 healthy children aged 0.32-12.99 years, we found that growth is a tri-phasic process: stasis, steep changes (or saltation) and continuous growth. There is very little information in the literature about daily changes in head circumference. AIM: The present study analysed growth in head circumference and supine length in eight healthy infants. SUBJECT AND METHODS: Supine length and head circumference was measured five times a week during 151 days. Mean intra-observer technical error of measurement (TEM) for head circumference and supine length were 0.10 and 0.15 cm, respectively; smoothing techniques used were based on the TEM with a hard rejection criterion. RESULTS: The three types of events previously found in supine length are also present in head circumference. The number of steep changes was greater in supine length than in head circumference. CONCLUSION: Growth is a discontinuous and irregular process, present not only in long bones but also in skull bones. Although long-term growth curves of head circumference and supine length are different, when measured on a daily basis findings suggest that skull and long bones have a common pattern; the physiological basis needs future research.

Perinatal origin of adult diseases. / Origen perinatal de enfermedades del adulto.

Three relevant, interrelated scientific advances are described: the concept of critical periods (CPs), the Barker Hypothesis (BH), and the underlying epigentic mechanisms involved. Critical periods are genetically programmed, highly sensitive time intervals during which the interaction between environment and individuals generates the development of physiological processes related to physical growth and development, survival (breastfeeding), social behavior, and learning. Barker hypothesis is based on the finding that prenatal malnutrition (for example, lowbirthweight) is closely related to mortality due to cardiovascular disease CVD) in the adult, and to the risk conditions leading to it: insuline resistence, metabolic syndrome, obesity, and high blood pressure. This association is no due to genetical causes, but secondary to nutritional deficits which in turn generate epigenetic mechanisms of methylation of DNA basis and cromatine proteines (histones), which do not modify the genetic code but modulate its expresion, reinforcing some genes, inhibiting others, regulating when and where they are expressed. These genes participate in the process called programming, consisting of permanent changes in the response to stimulation of metabolic and hormone regulators, such as, for example, increasing insuline resistence. Epigenetic changes persist even when original conditions (fetal or perinatal malnutrition) are no longer present. This, in turn, affects health of the offspring later in adult life, creating thus the same environmental prenatal conditions to the next generation. This transgenerational effects of early nutritional experiences are more frequent in population groups of por socioeconomic level, and consequently have serious implications in the future health of Latin American populations.

Se describen tres adelantos interrelacionados: el concepto de períodos críticos, la hipótesis de Barker y los mecanismos epigenéticos involucrados. Los primeros son intervalos temporales genéticamente programados, vinculados a procesos fisiológicos ligados al crecimiento y desarrollo físico del individuo (habilitación de vías nerviosas, replicación neuronal), a procesos relacionados con el apego madre-hijo, la lactancia, la socialización y el aprendizaje. La hipótesis de Barker sostiene que la desnutrición, en la etapa perinatal, se asocia a mayor mortalidad por enfermedad cardiovascular y a las alteraciones metabólicas que condicionan dicha enfermedad (síndrome metabólico, resistencia a la insulina, hipertensión). Esta asociación es secundaria a las alteraciones nutricionales que desencadenan mecanismos epigenéticos de metilación de bases del ADN o de histonas. Los cambios epigenéticos son permanentes y pueden tener efectos transgeneracionales, al afectar el ambiente perinatal en donde crece la descendencia, hecho relevante en países con poblaciones que viven en condiciones socioeconómicas desfavorables.

Jacks and other dexterity games in children and their parents. / La payana y otros juegos de destreza en los niños y sus padres.

Traditional games have changed with the development of technology. We analyzed dexterity games played by children and their parents in general, and jacks in particular. A survey was administered to children aged 5-12 years and their families. A total of 109 surveys were completed; 91.7 % of parents referred that they had played jacks and that 4.6 % of their children also played it (p < 0.00001). Girls played Chinese jump rope and ring-a ring-a roses less often than their mothers, but football more often. Boys played ring-a ring-a roses less often than their fathers. Besides, 28.4 % of parents did not play any dexterity game with their children. To conclude, jacks, Chinese jump rope, and ring-a ring-a roses are now less common; and girls play football more often than their mothers. Parents do not usually play dexterity games with their children.

Los juegos tradicionales se han modificado con el desarrollo de la tecnología. Se analizaron los juegos de destreza en general y la payana en particular que practicaban los niños y sus padres. Se realizó una encuesta a niños de 5 a 12 años y a sus familias. Se completaron 109 encuestas; el 91,7 % de los padres refirió haber jugado payana y el 4,6 % de sus hijos jugaba también (p < 0,00001). Las niñas jugaban menos que sus madres al elástico y a la ronda, pero más al fútbol. Los niños jugaban menos a la ronda que sus padres. El 28,4 % de los padres no solía jugar ningún juego de destreza con sus hijos. En conclusión, la payana, el elástico y la ronda han disminuido y las niñas juegan más al fútbol que sus madres. Los padres suelen jugar pocos juegos de destreza con sus hijos.

Screening for developmental problems at primary care level: a field programme in San Isidro, Argentina.

Information on prevalence and type of problems of psychomotor development (PPD) is necessary for implementation of specific care programmes at field level. With the purpose of obtaining this information, a screening test, the Prueba Nacional de Pesquisa (PRUNAPE) for PPD was implemented in three health centres in San Isidro, a city near Buenos Aires, attended by different socio-economic groups: centres A and B were located in the inner city, and C in a middle-class area. The test was administered by three previously trained paediatricians to 839 apparently healthy children aged 0-5 years. The failure rates were 24%, 19% and 16% in centres A, B and C respectively (20% in total). Out of the 170 children failing the test and referred to hospital for diagnosis and treatment, only 96 complied and went through a series of studies carried out by a previously prepared multidisciplinary team. With the exception of children who failed the Battelle test [classified as Global Developmental Delay (GDD)], final diagnoses were classified according to Diagnostic and Statistical Manual of Mental Disorders, 4th edition: GDD (60 children), pervasive developmental disorders (11), communication disorders (10), motor disorders (6, of whom 2 were with cerebral palsy), attention deficit disorders (5), attachment disorders (2), normal children (3). Co-morbidity was present in 22 affected children. Forty-three per cent of children failing the test did not attend hospital or did not complete studies because of major social and family problems, the family not living in the area, or the parents preferring to consult their own paediatrician. Health centres and children not selected in a randomised way, and a significant proportion of them not complying with the indication of hospital referral were major sources of bias, so that PPD prevalences, positive and negative predictive values should be interpreted with great caution. Further studies accounting for these sources of bias are needed to confirm the observed prevalence of PPD. Training of health personnel, at hospital and health centre level, priority settings, and operational research to evaluate effectiveness of treatments and care delivery systems at field level are necessary in Argentina for optimal use of limited healthcare resources.

Developmental tempo in children aged 0-5 years living under unfavourable environmental conditions. / Tempo de desarrollo de niños de 0 a 5 años que viven bajo circunstancias ambientales desfavorables.

OBJECTIVE: To describe the dynamics of development along the early years of life among children living under unfavorable socioeconomic conditions. POPULATION AND METHODS: In 5401 children younger than 6 years old living in Florencio Varela and in the Matanza-Riachuelo River Basin (Matanza, Villa 21-24, Wilde, Villa Inflamable and Acuba), areas with a high proportion of families with unmet basic needs, a logistic regression analysis was used to estimate the median age at attainment of 13 psychomotor developmental milestones; differences between these ages and median age at attainment of milestones as per the national reference were plotted on the y-axis, while the median age as per the national reference was plotted on the x-axis. RESULTS: Three stages were observed: the first one between 0 and 270 days with normal development, in which the median age at attainment was similar to that of the national reference; a second one of progressive development delay; and a third one of recovery at 1260 days. Adjusted linear spline slopes were 0.06 (not significant), -0.26 (p < 0.0001) and 0.26 (p < 0.01) for stages 1, 2 and 3, respectively. The three slopes were statistically different from each other. The stage of normal development (stage 1) was attributed to the protective effect of the mother and the family environment; stage 2 of progressive delay, to the unfavorable impact of the environment, and stage 3 of partial recovery was attributed to attending a daycare center. These findings allow the implementation of effective interventions at each stage. CONCLUSION: Three periods with different developmental tempos were identified.

OBJETIVO: Describir la dinámica del desarrollo en los primeros años en niños que viven bajo condiciones socioeconómicas desfavorables. POBLACIÓN Y MÉTODOS: En 5401 niños menores de 6 años de zonas con alta proporción de población con necesidades básicas insatisfechas de Florencio Varela y de la Cuenca Matanza-Riachuelo (Matanza, Villa 21-24, Wilde, Villa Inflamable y Acuba), se estimó, por regresión logística, la edad mediana de cumplimiento de 13 pautas de desarrollo psicomotor y se graficaron, en el eje de las "y", las diferencias entre esas edades y las de la referencia nacional, y, en el eje de las "x", la edad mediana según la referencia nacional. RESULTADOS: Se observaron tres fases: una primera entre 0 y 270 días con desarrollo normal, en que la edad mediana de cumplimiento fue similar a la de la referencia nacional; una segunda de retraso progresivo del desarrollo; y una tercera de recuperación a partir de los 1260 días. Las pendientes de las splines lineales ajustadas fueron 0,06 (no significativo), -0,26 (p < 0,0001) y 0,26 (p < 0,01) para las fases 1, 2 y 3, respectivamente. Las tres pendientes fueron estadísticamente diferentes entre sí. La fase de desarrollo normal (fase 1) se atribuyó al efecto protector de la madre y el medio familiar; la fase 2 de retraso progresivo, a la influencia desfavorable del ambiente, y la fase 3 de recuperación parcial, a la concurrencia a guardería. Estos hallazgos permiten intervenciones eficaces en cada fase. CONCLUSIÓN: Se identificaron tres períodos con diferente tempo de desarrollo.

Psychomotor development index in children younger than 6 years from Argentine provinces. / Índice de desarrollo psicomotor en menores de seis años en las provincias argentinas.

OBJECTIVE: To obtain a psychomotor development index (PDI) for each Argentine province. POPULATION AND METHODS: Using a national, probabilistic, and stratified sample of 13 323 male and female children younger than 6 years selected for the National Survey on Nutrition and Health (Encuesta Nacional de Nutrición y Salud, ENNyS 2004), we estimated the PDI per province based on compliance with 10 developmental milestones. The median age at attainment (median age) of each milestone was estimated adjusting a logistic regression. The PDI was estimated as 100* (1 + b), where "b" is the regression coefficient of y= a + b x, where "y" is the median age as per the national reference (x) minus the median age at attainment of a milestone. The theoretical value expected for the PDI was 100. RESULTS: The PDI per province ranged between 72.1 and 106.4. Most provinces showed a negative regression coefficient, which indicated a progressive increase of the delay in the age at attainment of milestones. The correlation coefficient between the PDI per province and infant mortality in 2005was extremely high: -0.85, suggesting that both indicators share similar biological and social determinants. The PDI was negative because the higher the mortality, the lower the PDI. CONCLUSION: We have now a positive health indicator available in Argentina: the psychomotor development index, which is a low-cost, easy to collect, and reliable tool that may be used in national health statistics.

OBJETIVO: Obtener el índice de desarrollo psicomotor (IDP) de cada provincia argentina. POBLACIÓN Y MÉTODOS: En una muestra nacional probabilística y estratificada de 13 323 niños y niñas menores de seis años seleccionada para la encuesta Nacional de Nutrición y Salud (ENNyS 2004) se calculó el IDP por provincia en base al cumplimiento de diez pautas de desarrollo. Se estimó la mediana de la edad de cumplimiento (edad mediana) de cada pauta ajustando una regresión logística. El IDP fue calculado como 100* (1 + b), siendo b el coeficiente de regresión de y= a + b x, donde y es: la edad mediana para la Referencia Nacional (x) menos la edad mediana de una pauta. El valor teórico esperable del IDP es 100. RESULTADOS: Los valores obtenidos del IDP por provincia se encuentran en el rango de 72.1 a 106.4. En la mayoría de las provincias los coeficientes de regresión fueron negativos, indicando un aumento progresivo del retraso en la edad de cumplimiento de pautas con la edad de los niños. El coeficiente de correlación entre el IDP por provincia y la mortalidad infantil en 2005 fue extremadamente alto: -0.85, lo que sugiere que ambos indicadores comparten similares determinantes bio- sociales. El signo es negativo porque cuanto mayor es la mortalidad, menor es el IDP. CONCLUSIÓN: El país dispone ahora de un indicador positivo de salud: el Índice de Desarrollo Psicomotor, simple de recoger, confiable y de bajo costo para ser incorporado a las estadísticas nacionales de salud.

Incorporación a las estadísticas oficiales del Municipio de Pila de indicadores positivos de salud infantil: proyecto CREDEPILA / Incorporation of positive child health indicators to the official statistics of the Municipality of Pila: CREDEPILA project

RESUMEN INTRODUCCIÓN: El municipio bonaerense de Pila carecía de indicadores adecuados para monitorear la salud infantil de su población. El objetivo fue incorporar indicadores positivos de crecimiento físico y desarrollo psicomotor en niños de 0 a 5,99 años. MÉTODOS: Se convocó a toda la población objetivo (con consentimiento parental) a los jardines y centros de atención primaria. Personal capacitado midió peso, estaturalongitud corporal y administró 13 pautas de desarrollo de la Referencia Nacional (RN). Las medianas de datos antropométricos se obtuvieron con el método LMS; la edad de cumplimiento de pautas se estimó con regresión logística y el ajuste, con el test de Hosmer-Lemeshow. El índice de desarrollo (ID) se calculó con una regresión lineal entre las diferencias entre las edades de cumplimiento de los niños con las de la RN, y las edades de la RN. RESULTADOS: De un total de 321 niños, se evaluó a 307 (95,6% del total; 169 niñas). Las curvas de estatura fueron similares a las de la Organización Mundial de la Salud y a las argentinas actualizadas (los puntajes "z" no difirieron significativamente de cero); las de peso e índice de masa corporal mostraron un moderado sobrepeso: z= 0,38±0,07 de desvío estándar. No hubo diferencias significativas entre sexos. Con las 6 pautas que mostraron un ajuste adecuado, el ID fue 89. DISCUSIÓN: El método se implementó con éxito. Pila cuenta ahora con una línea de base para el monitoreo anual de la salud infantil.

ABSTRACT INTRODUCTION: The Buenos Aires municipality of Pila lacked adequate indicators to monitor child health in the population. The objective was to incorporate positive indicators based on physical growth and psychomotor development in children aged 0 to 5.99 years. METHODS: The entire target population was summoned to kindergartens and primary care centers (with parental consent). Trained health personnel measured weight, supine length/height and administered 13 developmental items taken from the National Reference (NR). Medians of anthropometric data were obtained with LMS method; the age of attainment of items was estimated with logistic regression and the fit was assessed with the Hosmer-Lemeshow test. Developmental index (DI) was calculated with linear regression of differences between children's attainment ages and those of the NR, and the ages of the NR. RESULTS: Of 321 children, 307 (95.6% of the total; 169 girls) were evaluated. Height curves were similar to those of the World Health Organization and updated Argentine curves (z-scores did not significantly differ from zero); weight and body mass index curves showed moderate overweight: z = 0.38±0.07 standard deviation. No significant sex differences were found. Based on the 6 items that showed a good fit, the DI was 89. DISCUSSION: The method was successfully implemented. Pila has now a baseline for annual monitoring of children's health.

Languaje: what makes us humans. / El lenguaje: eso que nos hace humanos.

Pediatrician carry out the surveillance of language in preschool children as one of the components of child development (language, fine and gross motor skills, etc.). However, language is more than that. The process of transformation of the magic meaning on the word present in the initial stages of human evolution (Myth period) into a new, symbolic meaning as representative of the object (Logos period) took around 40,000 years. With the mastering of language, man was capable of thinking; from then onwards, these two functions, thought and language, became inextricably linked, the evolved hand in hand. But this achievement had a high price : the alienation of man from nature. Hence, language became a social construction which, far from representing the objects of nature, was capable of assigning attributes and meaning to the objects themselves. Language can be used as a commercial strategy (making the words value and cost indistinguishable). According to Lacan, language is also a part of the subject, we are constructed by language. By promoting language in children we contribute to the promotion of the child as a person, as an individual and as a social being.

Los pediatras vigilamos el desarrollo del lenguaje como uno de los componentes del desarrollo infantil. Sin embargo, el lenguaje es algo más que eso. La trasformación del sentido mágico que inicialmente tuvo la palabra (mito) en un sentido representativo del objeto (logos) llevó unos 40 000 años. Con la adquisición del lenguaje, el hombre fue capaz de pensar, de desarrollar el pensamiento; éste y la palabra van de la mano, pero este logro tuvo un alto precio, que fue el alejamiento del hombre de la naturaleza. La palabra pasó a ser, así, una construcción social que, lejos de representar los objetos a los que se refería, fue capaz de asignar atributos y significado a las cosas: decimos que algo "vale" cuando, en realidad, "cuesta". El lenguaje es también parte del sujeto; según Lacan, estamos "constituidos" por el lenguaje. Promoviendo el lenguaje, contribuimos a la promoción de la persona del niño como individuo y como ser social.

Diferencias de sexo en la canalización del crecimiento y del desarrollo infantil: un ejemplo de regulación genética / Sex differences in the canalization of child growth and development: An example of genetic regulation

Ante una enfermedad o carencia nutricional, la curva de crecimiento puede desviarse del percentil que recorría, y cuando el daño es neutralizado, hay una fuerza regulatoria que tiende a restaurar su trayectoria. Este fenómeno, llamado crecimiento compensatorio o catch-up, es un ejemplo de canalización del crecimiento. Las niñas se ven favorecidas respecto de los niños porque, ante un mismo daño, su crecimiento (y también su desarrollo psicomotor) se desvía menos que el de los niños. Esta diferencia también se expresa en una mayor prevalencia masculina de retraso del desarrollo en general y de algunos trastornos del desarrollo, como trastorno del espectro autista y parálisis cerebral, entre otros. La mortalidad infantil es menor en niñas a todas las edades y la esperanza de vida es varios años mayor en mujeres en todos los países. La causa de estas diferencias a favor de las niñas tiene un fuerte componente genético y enriquece la interpretación de estudios clínicos y epidemiológico

In case of a disease or nutritional deficit, the growth curve may show deviations from the percentile it was depicting, and once damage is removed, a strong regulatory force tends to restore its path. Such phenomenon is known as catch-up growth and is an example of canalization of growth. Girls are more favored than boys because, when faced with the same damage, their growth (and also their psychomotor development) shows less deviation than that of boys. Such difference is also shown in a higher prevalence among boys of growth retardation in general and some developmental disorders, including autism spectrum disorder and cerebral palsy. Infant mortality is lower in girls at all ages and life expectancy is several years longer in women from all countries. The cause of such differences in favor of girls has a strong genetic component and is enriching for the interpretation of clinical and epidemiological studies.

Assessment of child psychomotor development in population groups as a positive health indicator.

INTRODUCTION: It is necessary to use health indicators describing the conditions of all individuals in a population, not just of those who have a disease or die. OBJECTIVES: To introduce a method to collect population indicators of psychomotor development in children younger than 6 years old and show its results. POPULATION AND METHODS: Data were obtained from a cross-sectional assessment regarding compliance with 13 developmental milestones (selected from the national reference) conducted in 5465 children using five surveys administered by the Matanza-Riachuelo River Basin Authority in areas of this basin where a high proportion of families with unmet basic needs live. For each survey, a logistic regression analysis was used to estimate the median age at attainment of the 13 developmental milestones. A linear regression model between the estimated age at attainment of the 13 milestones was adjusted for each survey based on the corresponding age at attainment of the national reference. Based on this model, three indicators were defined: overall developmental quotient, developmental quotient at 4 years old, and developmental trend. RESULTS: Results from the five surveys ranged between 0.74 and 0.85, 0.88 and 0.81, and -0.15 and -0.26 for the overall developmental quotient, developmental quotient at 4 years old, and developmental trend, respectively. A distinct developmental delay and an increasing trend in delay with age were observed. CONCLUSIONS: Indicators are easily interpreted and related to social indicators (unmet basic needs, etc.). Collecting the information necessary to make estimations takes little time and can be applied to population groups, but not on an individual level.

INTRODUCCIÓN: Resulta necesario utilizar indicadores de salud que expresen las condiciones de todos los individuos de una población y no solo de aquellos enfermos o que mueren. OBJETIVOS: Presentar un método para obtener indicadores poblacionales de desarrollo psicomotor en niños menores de seis años y mostrar sus resultados. POBLACIÓN Y MÉTODOS: Los datos provienen de la evaluación transversal del cumplimiento de 13 ítems de desarrollo (seleccionados de la referencia nacional) de 5465 niños en cinco encuestas realizadas por la Autoridad de Cuenca Matanza Riachuelo en dicha cuenca en áreas con alta proporción de familias con necesidades básicas insatisfechas. Para cada encuesta, se estimó, por regresión logística, la edad mediana de cumplimiento de los 13 ítems de desarrollo. Se ajustó un modelo de regresión lineal entre la edad de cumplimiento estimada de los 13 ítems de cada encuesta en función de las correspondientes edades de la referencia nacional. A partir de este modelo, se definieron tres indicadores: el cociente global de desarrollo, el cociente a los 4 años y la tendencia del desarrollo. RESULTADOS: Los resultados para las cinco encuestas variaron entre 0,74 y 0,85; 0,88 y 0,81 y -0,15 y -0,26 para el cociente global de desarrollo, cociente global a los 4 años y la tendencia del desarrollo, respectivamente. Se expresó un marcado retraso en el desarrollo y una tendencia progresiva del retraso con la edad. CONCLUSIONES: Los indicadores sondeinterpretación sencilla y se relacionan con indicadores sociales (necesidades básicas insatisfechas, etc.). La obtención de la informaciónnecesaria para realizar los cálculos toma poco tiempo y es aplicable a grupos de población, pero no a individuos.

[Beta thalassemia major in Argentina]. / Beta talasemia mayor en la Argentina.

An analysis of beta thalassemia major patients seen at Hospital Juan P. Garrahan was carried out in order to determine the characteristics and outcome of the population. From August 1987 to July 2000, 45 patients were admitted (27 males-18 females). The most common beta globin gene defects were C-39 (30.7%); IVS-I nt 110 (20%); IVS-I nt 6 (13.3%); IVS-I nt 1(4%). alpha globin genes were normal in 42 patients, 1 patient had triplicate and cuadriplicate alpha globin genes and 2 patients were not analyzed. Six patients of 5 families were heterozygous for -158G gamma mutation. Allogeneic stem cell transplantation was performed in 7 patients, with an identical sibling. Transfusion-related infections and alloantibodies were detected in 6.7% patients. Growth assessment showed no significant difference in the stature of girls compared to the reference population, but 5 boys had short stature. There is a tendency to short trunk. Growth velocity was normal at prepubertal age. No X-ray lesions related to desferrioxamine were observed. Delayed puberty and hypogonadotropic hypogonadism were found in 35.7% and abnormalities in GH/IGF-I axis in 12.5% of the patients. Impaired glucose tolerance was found in 2 patients. No patient developed diabetes mellitus, thyroid or adrenal insufficiency. One patient had cardiac complications. Forty-two patients are alive and 3 died (cardiac failure 1, central nervous system bleeding 1, sepsis 1). We conclude that beta thalassemia major, originated mainly from Italian immigrants, has a cumbersome treatment and is severely hindered by the lack of adequate economic resources in our patients.

La payana y otros juegos de destreza en los niños y sus padres / Jacks and other dexterity games in children and their parents

Los juegos tradicionales se han modificado con el desarrollo de la tecnología. Se analizaron los juegos de destreza en general y la payana en particular que practicaban los niños y sus padres. Se realizó una encuesta a niños de 5 a 12 años y a sus familias. Se completaron 109 encuestas; el 91,7 % de los padres refirió haber jugado payana y el 4,6 % de sus hijos jugaba también (p < 0,00001). Las niñas jugaban menos que sus madres al elástico y a la ronda, pero más al fútbol. Los niños jugaban menos a la ronda que sus padres. El 28,4 % de los padres no solía jugar ningún juego de destreza con sus hijos.En conclusión, la payana, el elástico y la ronda han disminuido y las niñas juegan más al fútbol que sus madres. Los padres suelen jugar pocos juegos de destreza con sus hijos.

Traditional games have changed with the development of technology. We analyzed dexterity games played by children and their parents in general, and jacks in particular. A survey was administered to children aged 5-12 years and their families. A total of 109 surveys were completed; 91.7 % of parents referred that they had played jacks and that 4.6 % of their children also played it (p < 0.00001). Girls played Chinese jump rope and ring-a ring-a roses less often than their mothers, but football more often. Boys played ring-a ring-a roses less often than their fathers. Besides, 28.4 % of parents did not play any dexterity game with their children.To conclude, jacks, Chinese jump rope, and ring-a ring-a roses are now less common; and girls play football more often than their mothers. Parents do not usually play dexterity games with their children.

A population-based study of cognitive impairment in socially vulnerable adults in Argentina. The Matanza Riachuelo study preliminary results.

Population aging has taken place intensively worldwide, even in developing countries. These countries have population groups with low resources and basic unmet needs that are frequently omitted from epidemiological studies. OBJECTIVE: The purpose of this study was to determine the prevalence of cognitive impairment (CI) and dementia in an economic and socially vulnerable population from Argentina. METHODS: A door-to-door observational population-based survey among adults over 60 years of cognitive impairment and dementia in the social vulnerable area of the Matanza Riachuelo Basin, in the suburban area of Buenos Aires, Argentina was conducted. Trained psychologists interviewed subjects and a proxy informant. A standardized protocol including a socio-demographic questionnaire, the Mini-Mental State Examination, the Geriatric Depression Scale and a functional inventory for IADL and ADL was administered. Diagnoses were divided into three general categories: normal cognitive function, cognitive impairment-no dementia (CIND) and dementia. RESULTS AND CONCLUSIONS: A total of 2437 elderly persons were assessed, of which 73.6% fulfilled inclusion criteria. The prevalence of CI among those over 60 was 26.4% (18.1% CIND and 8.3% dementia) with higher prevalence of dementia in younger individuals than rates reported in developed counties, probably due to low control of vascular risk factors. This information can help inform health public decisions in the generation of programs and plans for the prevention, diagnosis and treatment of cognitive impairment in this type of socially vulnerable population.

O envelhecimento da população idosa tem aumentado mundialmente, mesmo em países em desenvolvimento. Estes países têm grupos populacionais de poucos recursos, com necessidades básicas não satisfatórias, frequentemente omitidas nos estudos epidemiológicos. OBJETIVO: O propósito deste estudo foi determinar a prevalência de comprometimento cognitivo (CC) e demência em uma população socioeconomicamente vulnerável na Argentina. MÉTODOS: Foi realizada pesquisa observacional de base populacional porta-a-porta entre adultos acima de 60 anos numa área de vulnerabilidade social em Matanza Riachuelo, no subúrbio de Buenos Aires, Argentina. Psicólogos treinados entrevistaram o sujeito e um acompanhante. Um protocolo estandardizado que incluiu um questionário sociodemográfico, o MEEM, a escala de depressão geriátrica e um inventário funcional para ABVD e AIVD foram administrados. Os diagnósticos foram divididos em três categorias: função cognitiva normal, comprometimento cognitivo sem demência (CCSD) e demência. RESULTADOS: Foram avaliados um total de 2437 de idosos, dos quais 73,6% preencheram os critérios de inclusão. A prevalência de CC entre aqueles acima de 60 anos foi de 26,4% (18,1% CCSD e 8,3% de demência) com maiores prevalência de demência em indivíduos mais jovens do que os reportados em países desenvolvidos, provavelmente devido a controle inadequado dos fatores de risco vasculares. CONCLUSÃO: Esta informação pode contribuir para tomada de decisões em saúde pública para geração de programas e planos que apontem para a prevenção, diagnóstico e tratamento de CC neste tipo de população em vulnerabilidade social.