ABSTRACT OBJECTIVES Compare self-perceived discrimination between immigrants and locals in Chile and analyze the relationship between immigration and perceived discrimination and immigration, discrimination and health outcomes, adjusting for sociodemographic characteristics and social capital. METHODS Cross-sectional study, using population-based survey (CASEN2017). We selected 2,409 immigrants (representative of N = 291,270) and 67,857 locals (representative of N = 5,438,036) over 18 years of age surveyed. We estimated logistic regression models, considering the complex sample, with discrimination, self-rated health, medical treatment, healthcare system membership, complementary health insurance, medical consultation and problems when consulting as dependent variables, immigration and discrimination as main exposure variables, and social capital and sociodemographic variables as covariates of the models. RESULTS Immigrants were more likely to perceive discrimination in general compared to locals (OR = 2.31; 95%CI: 1.9-2.9). However, this does not occur for all specific reasons for discrimination; skin color and physical appearance were the most frequent causes of discrimination in immigrants. The interaction between immigration and discrimination was significantly related to worse self-rated health outcomes and treatment for pathologies, disfavoring discrimination against immigrants. In both locals and immigrants, discrimination was not associated with health care access outcomes, except for problems during consultation in locals (OR = 1.61; 95%CI 1.4-1.8). CONCLUSIONS In Chile, experiences of discrimination are intertwined with other forms of rejection and social exclusion, so it is urgent to raise awareness among the population to prevent these discriminatory practices, especially in health care and daily use places. It is essential to address discrimination in order to have an impact on intermediate variables and health outcomes. The extension of the results to the entire immigrant population could be very useful to deepen the problem and improve the estimates made.

RESUMEN OBJETIVOS Comparar la autopercepción de discriminación entre inmigrantes y locales en Chile y analizar la relación entre inmigración y discriminación percibida e inmigración, discriminación y resultados de salud, ajustando por características sociodemográficas y capital social. MÉTODOS Estudio transversal, utilizando encuesta poblacional (CASEN2017). Se seleccionaron 2.409 inmigrantes (representativos de N = 291.270) y 67.857 locales (representativos de N = 5.438.036) mayores de 18 años encuestados. Se estimaron modelos de regresión logística, considerando la muestra compleja, con discriminación, salud autoevaluada, tratamiento médico, pertenencia al sistema de salud, seguros complementarios de salud, consulta médica y problemas al consultar como variables dependientes, inmigración y discriminación como variables de exposición principal, y capital social y variables sociodemográficas como covariables de los modelos. RESULTADOS Inmigrantes tuvieron mayor posibilidad de percibir discriminación en general comparado con locales (OR = 2,31; IC95% 1,9–2,9). Sin embargo, esto no ocurre para todos los motivos específicos de discriminación; color de piel y apariencia física fueron las causas de discriminación más frecuentes en inmigrantes. La interacción entre inmigración y discriminación se relacionó significativamente con peores resultados de salud autoevaluada y tratamiento por patologías, en desfavor de los inmigrantes discriminados. Tanto en locales como en inmigrantes la discriminación no se asoció con resultados de acceso a atención en salud, excepto problemas durante la consulta en locales (OR = 1,61; IC95% 1,4–1,8). CONCLUSIONES En Chile, las experiencias de discriminación se entrelazan con otras formas de rechazo y exclusión social, por lo cual es urgente concientizar a la población para prevenir estas prácticas discriminatorias, sobre todo en la atención en salud y lugares de uso cotidiano. Abordar la discriminación es indispensable para lograr impactar en variables intermedias y resultados de salud. La extensión de los resultados a toda la población inmigrante podría ser de amplia utilidad para profundizar la problemática y mejorar las estimaciones realizadas.

ABSTRACT OBJECTIVES Compare self-perceived discrimination between immigrants and locals in Chile and analyze the relationship between immigration and perceived discrimination and immigration, discrimination and health outcomes, adjusting for sociodemographic characteristics and social capital. METHODS Cross-sectional study, using population-based survey (CASEN2017). We selected 2,409 immigrants (representative of N = 291,270) and 67,857 locals (representative of N = 5,438,036) over 18 years of age surveyed. We estimated logistic regression models, considering the complex sample, with discrimination, self-rated health, medical treatment, healthcare system membership, complementary health insurance, medical consultation and problems when consulting as dependent variables, immigration and discrimination as main exposure variables, and social capital and sociodemographic variables as covariates of the models. RESULTS Immigrants were more likely to perceive discrimination in general compared to locals (OR = 2.31; 95%CI: 1.9-2.9). However, this does not occur for all specific reasons for discrimination; skin color and physical appearance were the most frequent causes of discrimination in immigrants. The interaction between immigration and discrimination was significantly related to worse self-rated health outcomes and treatment for pathologies, disfavoring discrimination against immigrants. In both locals and immigrants, discrimination was not associated with health care access outcomes, except for problems during consultation in locals (OR = 1.61; 95%CI 1.4-1.8). CONCLUSIONS In Chile, experiences of discrimination are intertwined with other forms of rejection and social exclusion, so it is urgent to raise awareness among the population to prevent these discriminatory practices, especially in health care and daily use places. It is essential to address discrimination in order to have an impact on intermediate variables and health outcomes. The extension of the results to the entire immigrant population could be very useful to deepen the problem and improve the estimates made.

RESUMEN OBJETIVOS Comparar la autopercepción de discriminación entre inmigrantes y locales en Chile y analizar la relación entre inmigración y discriminación percibida e inmigración, discriminación y resultados de salud, ajustando por características sociodemográficas y capital social. MÉTODOS Estudio transversal, utilizando encuesta poblacional (CASEN2017). Se seleccionaron 2.409 inmigrantes (representativos de N = 291.270) y 67.857 locales (representativos de N = 5.438.036) mayores de 18 años encuestados. Se estimaron modelos de regresión logística, considerando la muestra compleja, con discriminación, salud autoevaluada, tratamiento médico, pertenencia al sistema de salud, seguros complementarios de salud, consulta médica y problemas al consultar como variables dependientes, inmigración y discriminación como variables de exposición principal, y capital social y variables sociodemográficas como covariables de los modelos. RESULTADOS Inmigrantes tuvieron mayor posibilidad de percibir discriminación en general comparado con locales (OR = 2,31; IC95% 1,9–2,9). Sin embargo, esto no ocurre para todos los motivos específicos de discriminación; color de piel y apariencia física fueron las causas de discriminación más frecuentes en inmigrantes. La interacción entre inmigración y discriminación se relacionó significativamente con peores resultados de salud autoevaluada y tratamiento por patologías, en desfavor de los inmigrantes discriminados. Tanto en locales como en inmigrantes la discriminación no se asoció con resultados de acceso a atención en salud, excepto problemas durante la consulta en locales (OR = 1,61; IC95% 1,4–1,8). CONCLUSIONES En Chile, las experiencias de discriminación se entrelazan con otras formas de rechazo y exclusión social, por lo cual es urgente concientizar a la población para prevenir estas prácticas discriminatorias, sobre todo en la atención en salud y lugares de uso cotidiano. Abordar la discriminación es indispensable para lograr impactar en variables intermedias y resultados de salud. La extensión de los resultados a toda la población inmigrante podría ser de amplia utilidad para profundizar la problemática y mejorar las estimaciones realizadas.

ABSTRACT INTRODUCTION Population aging is a worldwide phenomenon. It is estimated that by 2050, one of five persons will be aged ≥60 years. In Chile, 15.8% of the population is now aged ≥60 years, and this figure will reach 30.7% by 2050. In 2006, a national program was implemented to provide assistive devices to older adults aged ≥65 years with limited mobility or difficulty performing activities of daily living. To date, there have been no assessments of the program’s effectiveness. OBJECTIVE Assess the effectiveness of an assistive devices policy in Chile on improving functional capacity of older adults aged ≥65 years, and beneficiaries’ perceptions of the services received, including changes in their quality of life. METHODS This was a before–after longitudinal study. A cohort of 309 persons was recruited, consisting of patients who received care at a public hospital in Santiago, Chile during 2014–2015. They were assessed before delivery of assistive devices, then followed for seven months, with repeated evaluations made in their homes. The following indicators were measured: functional capacity (Tinetti scale and Barthel Index); changes in perceived quality of life related to use of assistive devices; and other sociodemographic, clinical and protocol-compliance variables. A longitudinal analysis of before–after progress was carried out, as well as a description of service delivery and medical followup. RESULTS Sixty-eight percent of those surveyed were women; median age was 74 years, average schooling was 6 years, and 93% had low income (monthly income <US$398). Assistive devices increased independence in activities of daily living, improved mobility and perceived quality of life, and decreased fall risk and pain. One hundred percent felt satisfied with the service received, 91% were trained in use of the device, and delivery deadlines were met in 83% of cases, but only 2% were followed up. One negative aspect is that the program covers only 25% of estimated need. CONCLUSIONS This assistive device program helps improve functional capacity and perceived quality of life in vulnerable patients who are able to access it. It addresses a real need and is highly valued by patients. Although delivery schedules were fulfilled, followup care schedules were not.

Abstract: Background: In recent years, there has been an increasing interest in the determinants of subjecti ve well-being and happiness. In that context, life satisfaction is one of the measures used to assess subjective well-being, with emphasis in adult population. Objective: Adapt and validate (cultu rally and linguistically) the Canadian “Satisfaction with Life adapted for Children” (SWLS-C) in Chilean adolescents, in order to assess their global judgement about their own lives. Patients and Methods: Cross-sectional study, with adolescents between 10 to 18 years old, of both sexes and three socioeconomic levels in the Metropolitan region of Chile. After a process of translation and back translation, the scale SWLS-C was applied in 3 groups: cognitive interviews (n = 23) to evaluate se mantics, content, reliability and construct validity, a second group was used as pretest (n = 24) and a third for the validation of the test (n = 200). Factor analysis was performed and measurement of convergent and divergent validity. Results: The internal consistency of the scale through Cronbach’s alpha was 0.815, with item-total correlations between 0.51 and 0.7. The correlation between scale items varies between 0.390 and 0.607. In the main component analysis, all items met the require ment of a factor greater than 0.3. The inverse correlation between SWLS-C and CDI was significant, with a linear R2 of 0.465. Conclusions: The Chilean version of the SWLS-C shows adequate psycho metric properties, construct validity, confirming its unidimensional character and the need to keep each item of the Canadian version. SWLS-C, in its Chilean version, is suitable to be self-applied in adolescent population. Further studies are needed to provide further evidence.

Resumen: Introducción: El estudio del bienestar ha aumentado en las últimas décadas por su importancia en la salud mental de las personas. En ese marco, la evaluación de la satisfacción con la vida (SV) se ha utilizado para conocer el bienestar subjetivo (BS), con énfasis en población adulta. Objetivo: Adaptar y validar lingüística y culturalmente a Chile la “Satisfaction with Life adapted for Children” (SWLS- C) de origen canadiense, para conocer el juicio global del adolescente respecto a su propia vida. Pacientes y Método: Estudio transversal, con adolescentes entre 10 y 18 años, de tres niveles socioe conómicos, en la Región Metropolitana de Chile. Tras un proceso de traducción y retrotraducción, se aplicó la escala en 3 grupos: entrevista cognitiva (n = 23) para evaluar la validez semántica, de contenido, de constructo y confiabilidad del mismo; otro grupo como pretest (n = 24) y el tercero para la validación del test (n = 200). Se realizó análisis factorial y medición de validez convergente y divergente. Resultados: Consistencia interna presentó un alpha de Cronbach de 0,815, con correla ciones ítem-total entre 0,51 y 0,7. La correlación entre ítems varió entre 0,390 y 0,607. En la matriz de componentes principales, todos los ítems cumplieron con un factor mayor a 0,3. Significativa correlación inversa entre SWLS-C y el Inventario de Depresión Infantil (CDI), con un R2 lineal de 0,465. Conclusiones: Escala muestra adecuadas propiedades psicométricas, la validez de constructo, el carácter unidimensional y la necesidad de mantener cada ítem de la versión canadiense. SWLS-C, en la versión chilena, resulta adecuado para ser autoaplicado.

ABSTRACT OBJECTIVE To compare cancer hospital morbidity among the local population and the immigrant population in Chile. METHODS This is a prevalence study based on the analysis of hospital discharges of all the health centers of Chile. Cancer hospital discharges were characterized in 2012 according to the migratory status. The crude and specific rates of hospital morbidity for this cause were estimated for the analysis of their association with migratory status using zero-inflated negative binomial regression, adjusted for sociodemographic variables. RESULTS The neoplasms were the third cause of hospital discharges for immigrants and the seventh one for Chileans. The adjusted rate of cancer hospital discharges was higher for Chileans than immigrants, and the latter had fewer days of hospitalization and greater proportion of surgical interventions. In the group of immigrants, cancer hospital discharges mainly corresponded to patients belonging to the private system (46%), and in the group of Chileans they mainly corresponded to patients in the public system (71.1%). We observed a large difference in the proportion of cancer hospital discharges for patients with no health insurance between the two populations (22.6%: immigrants, 1.0%: Chileans). In both populations, the three most frequent types of cancer were: (i) lymphoid tissue, hematopoietic organs, and related tissues, (ii) digestive organs, and (iii) breast cancer. CONCLUSIONS Models of differentiated care should be considered for immigrants, with the creation of specific programs of information, coverage, and protection against cancer. More information on this problem must be generated at the local and international level.

RESUMEN OBJETIVO Comparar la morbilidad hospitalaria por cáncer entre población local e inmigrante en Chile. MÉTODOS Estudio de prevalencia basado en el análisis de egresos hospitalarios de todos los centros de Chile. Se caracterizaron los egresos hospitalarios por cáncer en 2012 según condición migratoria. Se estimaran las tasas brutas y específicas de morbilidad hospitalaria por esta causa, para finalmente analizar su asociación con el estatus migratorio mediante una regresión binomial negativa inflada por ceros ajustada por variables sociodemográficas. RESULTADOS Las neoplasias fueron la tercera causa de egresos hospitalarios en inmigrantes y la séptima en chilenos. La tasa ajustada de egresos hospitalarios por cáncer fue mayor en chilenos que en inmigrantes, y estos presentaron menor cantidad de días de hospitalización y mayor proporción de intervenciones quirúrgicas. En el grupo de inmigrantes, los egresos hospitalarios por cáncer corresponderán principalmente a pacientes pertenecientes al sistema privado (46%) y en chilenos a pacientes en el sistema público (71,1%). Se observó una amplia diferencia en la proporción de egresos hospitalarios por cáncer correspondientes a pacientes sin previsión de salud entre ambas poblaciones (22,6%: inmigrantes, 1,0%: chilenos). En ambas poblaciones, los tres cánceres que se presentaron con mayor frecuencia fueron: (i) tejidos linfáticos, órganos hematopoyéticos y tejidos afines, (ii) órganos digestivos y (iii) cáncer de mama. CONCLUSIONES Se deben considerar modelos de atención diferenciada en inmigrantes, creando programas específicos de información, cobertura y protección frente al cáncer. Es necesario generar más información sobre esta problemática a nivel local e internacional.

ABSTRACT OBJECTIVE To compare cancer hospital morbidity among the local population and the immigrant population in Chile. METHODS This is a prevalence study based on the analysis of hospital discharges of all the health centers of Chile. Cancer hospital discharges were characterized in 2012 according to the migratory status. The crude and specific rates of hospital morbidity for this cause were estimated for the analysis of their association with migratory status using zero-inflated negative binomial regression, adjusted for sociodemographic variables. RESULTS The neoplasms were the third cause of hospital discharges for immigrants and the seventh one for Chileans. The adjusted rate of cancer hospital discharges was higher for Chileans than immigrants, and the latter had fewer days of hospitalization and greater proportion of surgical interventions. In the group of immigrants, cancer hospital discharges mainly corresponded to patients belonging to the private system (46%), and in the group of Chileans they mainly corresponded to patients in the public system (71.1%). We observed a large difference in the proportion of cancer hospital discharges for patients with no health insurance between the two populations (22.6%: immigrants, 1.0%: Chileans). In both populations, the three most frequent types of cancer were: (i) lymphoid tissue, hematopoietic organs, and related tissues, (ii) digestive organs, and (iii) breast cancer. CONCLUSIONS Models of differentiated care should be considered for immigrants, with the creation of specific programs of information, coverage, and protection against cancer. More information on this problem must be generated at the local and international level.

RESUMEN OBJETIVO Comparar la morbilidad hospitalaria por cáncer entre población local e inmigrante en Chile. MÉTODOS Estudio de prevalencia basado en el análisis de egresos hospitalarios de todos los centros de Chile. Se caracterizaron los egresos hospitalarios por cáncer en 2012 según condición migratoria. Se estimaran las tasas brutas y específicas de morbilidad hospitalaria por esta causa, para finalmente analizar su asociación con el estatus migratorio mediante una regresión binomial negativa inflada por ceros ajustada por variables sociodemográficas. RESULTADOS Las neoplasias fueron la tercera causa de egresos hospitalarios en inmigrantes y la séptima en chilenos. La tasa ajustada de egresos hospitalarios por cáncer fue mayor en chilenos que en inmigrantes, y estos presentaron menor cantidad de días de hospitalización y mayor proporción de intervenciones quirúrgicas. En el grupo de inmigrantes, los egresos hospitalarios por cáncer corresponderán principalmente a pacientes pertenecientes al sistema privado (46%) y en chilenos a pacientes en el sistema público (71,1%). Se observó una amplia diferencia en la proporción de egresos hospitalarios por cáncer correspondientes a pacientes sin previsión de salud entre ambas poblaciones (22,6%: inmigrantes, 1,0%: chilenos). En ambas poblaciones, los tres cánceres que se presentaron con mayor frecuencia fueron: (i) tejidos linfáticos, órganos hematopoyéticos y tejidos afines, (ii) órganos digestivos y (iii) cáncer de mama. CONCLUSIONES Se deben considerar modelos de atención diferenciada en inmigrantes, creando programas específicos de información, cobertura y protección frente al cáncer. Es necesario generar más información sobre esta problemática a nivel local e internacional.

Abstract Introduction: Children and young international migrants face different health challenges compa red with the local population, particularly if they live in insecure environments or adverse social conditions. This study seeks to identify gaps in health outcomes of children between immigrant and local population in Chile. Methods: This study analyses data from three sources: (i) Born in Chile: Electronic records of antenatal visits from all municipal antenatal clinics of Recoleta in 2012; (ii) Growing up in Chile: Population survey "National Socioeconomic Characterization" (CASEN) from 2013 and (iii) Getting sick in Chile: Data of all hospital discharges in 2012, provided by the department of statistics and health information (DEIS) of the Ministry of Health. Results: (I) Born in Chile: Im migrants more frequently have psychosocial risk (62.3% vs 50.1% in Chileans) and enter later into the program (63.1% vs 33.4% enter later than 14 weeks of pregnancy). All birth outcomes were better among immigrants (e.g. caesarean sections rates: 24.2% immigrants vs % Chileans). (ii) Growing up in Chile: A higher proportion of migrant children is outside the school system and lives in multidi mensional poverty (40% immigrants vs 23.2% Chileans). (iii) Getting sick in Chile: Injuries and other external causes were more frequent cause of hospitalisation among migrants (23.6%) than the local population (16.7%) aged between 7 and 14 years. Conclusions: Addressing the needs of the children in Chile, regardless of their immigration status, is an ethical, legal and moral imperative.

Resumen Introducción: Los niños y jóvenes migrantes internacionales enfrentan diferentes retos en salud en comparación con la población local, en particular si se enfrentan a ambientes inseguros o a condi ciones sociales adversas. Este estudio busca identificar brechas existentes en resultados de salud de la niñez entre población migrante internacional y chilena. Métodos: Este estudio analiza tres fuentes de información: (i)Nacer en Chile: Datos de consulta antenatal recolectados de los registros electrónicos de las mujeres usuarias del programa Chile Crece Contigo, de todos los centros de salud familiar (CESFAM) de administración municipal de la comuna de Recoleta el año 2012; (ii)Crecer en Chile: Datos de encuesta poblacional "Caracterización Socioeconómica Nacional" CASEN 2013 y (iii)En-fermar en Chile: Datos de todos los egresos hospitalarios de 2012, proporcionada por el departamento de estadística e información en salud (DEIS) del Ministerio de Salud. Resultados: (i) Nacer en Chile: Hay mayor proporción de inmigrantes con riesgo biopsicosocial (62,3% vs 50,1% en chilenas) y con ingreso tardío al programa (63,1% vs 33,4%). Hay menos cesáreas en inmigrantes que en chilenas (24,2% vs 33,6%). (ii) Crecer en Chile: Existe una mayor proporción de niños migrantes fuera del sistema escolar y una mayor proporción en pobreza multidimensional (40% vs 23,2%). (iii) Enfermar en Chile: En migrantes entre 7-14 años es más frecuente egresar hospitalariamente por traumatismos/ otras causas externas (23,6% vs 16,7% en chilenos). Conclusiones: Este estudio entrega nueva evi dencia sobre necesidades urgentes de salud de nuestros niños en Chile. Este es un imperativo ético, legal y moral, independiente de la condición migratoria.

Background: Diabetic retinopathy is the first cause of blindness during working years. Aim: Provide knowledge of screening coverage, prevalence and level of diabetic retinopathy in patients that belong to the Cardiovascular Health Program in primary care. Material and Methods: Analysis of retinographies performed to 9076 diabetic patients aged 61 ± 13 years (61% women) adscribed to a Cardiovascular Health program in primary care centers of South-East Metropolitan Santiago. The examination was carried out by the evaluation of retinographies by trained optometrists. Results: The coverage of the screening program was 21%. The prevalence of sight threatening diabetic retinopathy was 3,1%. The prevalence of these entities was 45% higher in people aged between 18 and 44 years than in older people. Their prevalence in urban communities was 32% higher than in rural locations. Conclusions: The coverage of the screening program is low. Diabetic patients aged 18 to 44 years and those coming from urban communities have a higher prevalence of severe non-proliferative and proliferative diabetic retinopathy.

Background: Currently, most liver units use the Child-Pugh (CP) or the Model for End-Stage Liver Disease (MELD) scores to establish survival prognosis among patients with liver cirrhosis. Which classification is superior, is not well defined. Aim: To compare CP and MELD classification scores to predict survival among adult patients with liver cirrhosis in Chile. Material and Methods: Follow-up of 137 consecutive adult patients with liver cirrhosis aged 59 ± 12 years (55% women). The diagnosis was reached by clinical, laboratory and image studies at three different centers of Santiago. Patients were staged with CP and MELD classification scores at baseline and followed over a period of 12 months. The predictive capacity of the scores for survival was analyzed using a multivariate statistical analysis (Kaplan-Meier curves). Results: The most common etiology was alcohol (37.9%). The actuarial survival rate was 79.6% at 12 months of follow-up. When comparing groups with areas under curve of receiver operating characteristic curves (AUROC), there was no statistically significant difference in survival between less severe and advanced disease, assessed with both survival scales. The AUROC for MELD and CP were 0.80 and 0.81, respectively. Conclusions: This clinical study did not find a statistically significant difference between the two classifications for the prediction of 12 months survival in patients with cirrhosis.

ABSTRACT: This paper reviews the background and purpose of the Strategic Environmental Assessment (SEA) in our legal system and its application to urban planning, from its recent legal and statutory regulations, as well as administrative interpretation of the Contraloría General de la República. The authors argue that the SEA is a necessary and appropriate instrument, and the difficulties in the implementation can`t be attributed to the legal framework currently

RESUMEN: Este trabajo tiene por finalidad analizar los antecedentes y fundamentos de la Evaluación Ambiental Estratégica (EAE) en nuestro ordenamiento y su aplicación a los instrumentos de planificación territorial a partir de su regulación legal y reglamentaria reciente, así como de la jurisprudencia administrativa emanada de la Contraloría General de la República. Los autores sostienen que la EAE constituye un instrumento necesario e idóneo, cuyas dificultades en su implementación no se deben al marco jurídico vigente.

Introduction: Meningococcal disease (MD) is a major global problem because of its case fatality rate and sequels. Since 2012 cases of serogroup W have increased in Chile, with nonspecific clinical presentation, high case fatality rate and serious consequences. Objective: To characterize the evolution and outcome of MD cases between January 2012 and March 2013 in Chile. Material and Methods: Case series considering149 MD cases of 7 regions. A questionnaire was applied and clinical records were reviewed, including individual, agent, clinical course and healthcare process variables. The analysis allowed to obtain estimates of the OR as likelihoodof dying. Results: 51.5% was meningococcemia, the case fatality rate reached 27%, prevailing serogroup W (46.6%). Factors that increased the probability of dying: > age, belonging to indigenous people, having lived a stressful event, having diarrhea, impaired consciousness, cardiovascular symptoms, low oxygen saturation and low Glasgow coma scale score. Discussion: The case fatality rate exceeded normal levels and was higher in serogroup W. Increasing in this serogroup, associated to the increased presence of nonspecific symptoms or rapid progression to septicemia, hit a health system accustomed to more classic meningococcal disease presentation, which could partly explain the observed increased fatality rate.

Introducción: La enfermedad meningocóccica (EM) es un importante problema mundial por su letalidad y secuelas. Desde 2012 aumentaron en Chile los casos por serogrupo W, con presentación clínica inespecífica, elevada letalidad y secuelas graves. Objetivo: Caracterizar la evolución y desenlace de EM en casos desde enero de 2012 a marzo de 2013 en Chile. Material y Método: Serie de 149 casos de EM de siete regiones. Se aplicó un cuestionario y se revisaron registros clínicos, incluyendo variables del individuo, agente, curso clínico y proceso de atención. Los análisis permitieron obtener OR como estimadores de la probabilidad de fallecer. Resultados: El 51,5% se presentó como meningococcemia, la letalidad alcanzó a 27%, predominando el serogrupo W (46,6%). Aumentaron la probabilidad de fallecer: una mayor edad, pertenencia a pueblos originarios, haber vivido evento estresante, presentar diarrea, compromiso de conciencia, síntomas cardiovasculares, baja saturación de oxígeno y bajo puntaje de Glasgow. Discusión: La letalidad superó las frecuencias habituales y fue mayor en el serogrupo W. El aumento de este serogrupo, asociado a la mayor presencia de síntomas inespecíficos o a la rápida progresión a septicemia, impactó en un sistema de salud habituado a cuadros más clásicos de EM, lo que podría explicar en parte, la mayor letalidad observada.

Background: Wireless capsule endoscopy (CE) is a relatively new method to evaluate the small intestine. Aim: To evaluate the indications of CE in our center and assess whether specific indications are associated with best results during CE studies. Material and Methods: Retrospective analysis of 69 patients aged 9 to 85 years (36 males) subjected to a CE at our institution between April 2004 and October 2007. Results: The most common indications for CE were overt gastrointestinal bleeding in 43.5% of patients, iron deficiency anemia in 39.1 %, suspicion of a small bowel tumor in 4.3%, chronic diarrhea in 4.3% and abdominalpain in 2.9%. CE was normal in 23.2% and was able to find lesions in 76.8% of the studies. Gastrointestinal bleeding, followed by iron deficiency anemia were the indications associated with the higher rates of positive findings during CE. Conclusions: Gastrointestinal bleeding and iron deficiency anemia were the indications that obtained the best diagnostic y ield for CE.

Background: The outcome oí' mechanically ventilated patients can be inñuenced byfactors such as the indication of mechanical ventilation (MV) and ventilator parameters. Aim: To describe the characterístics of patients receiving MV in Chilean critical care uníts. Material and methods: Prospective cohort of consecutive adult patients admitted to 19 intensive care uníts ([CU) from 9 Chilean cities who received MV for more than 12 hours between September lst, 2003, and September 28th, 2003. Demographic data, severity of illness, reason for the initiation of MV, ventilation modes and settings as well as weaning strategies were registered at the initiation and then, daily throughout the course of MV for up to 28 days. ¡CU and hospital mortality were recorded. Resulte: Of 588 patients admitted, 156 (26.5%) received MV (57% males). Mean age and Simplified Acute Physiology Score-II (SAPSII) were 54.6±18years and 40.6±16.4 points respectively The most common indications for MV were acute respiratory failure (71.1%) and coma (22.4%). Assist-control mode (71.6%) and synchronized intermittent mandatory ventilation (SIMV) (14,2%) were the most frequently used. T-tube was the main weaning strategy. Mean duration of MV and length of stay in ICU were 7.8±8.7 and 11.1± 14 days respectively. OverallICUmortality was 33.9% (53patients). The main factors independently associated with increased mortality were (1) SAPS II ≥ 60 points (Odds Patio (OR), 10.5; 95% CI, 1.04-106.85) and (2) plateaupressure ≥ 30 cm Hfi atsecond day (OR, 3.9; 95% CI, 1.17-12.97). Conclusions: Conditionspresent at the onsetofMVand ventilator management were similar to those reported in the literature. Magnitude ofmultiorgan dysfunction and high plateau pressures are the most important factors associated with mortality).

Cystic fibrosis (CF) is caused by mutations in the CFTR gene. More than 1600 mutations have been described, with frequencies that differ worldwide according to the ethnic origin of patients. A small group of mutations are recurrent on several populations. It has been shown that they each tend occur on specific chromosome 7 haplotypes, supporting the notion of a single origin for them. Less than 50% of mutations in Chilean patients have been identified to date. To indirectly assess the possible presence of a predominant founder mutation in the remaining unknown alíeles, we evaluated 2 polymorphic markers, XV-2c and KM.19, tightly linked to the CFTR locus. The study was done in Chilean CF patients with unknown or delt F508 ( F508) CFTR mutations and their haplotypes were compared to affected family-based controls. F508 showed marked linkage disequilibrium with XV-2c/KM.19 haplotype B, with 90% of alíeles on that haplotype. There was no difference in haplotype distribution between unknown mutations and normal controls. These results support a European origin for F508 alíeles in Chilean patients, and make unlikely the presence of a predominant founder mutation in the so-far unknown alíeles