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Background In Colombia there are few studies on the behavior of this disease, with incidence reports of 8.3 patients per 100,000 inhabitants per year. This study is the first to be carried out in several centers in the country with the aim of reaching a representative number of patients with endocarditis, and thus reflect the behavior of this pathology in Colombia, determining possible associations with prognostic factors for mortality. Methods Observational, multicenter, analytical, historical cohort study, which was carried out in 4 high-complexity hospitals in Colombia from 2007 to 2017. The target population was adult patients hospitalized between 2007 and 2017 in the hospitals of: Fundación cardioinfantil (Bogotá), Hospital Mayor de Méderi (Bogotá), Shaio Clinical Foundation (Bogotá), and the Cardiovascular Foundation of Colombia (Bucaramanga) with a diagnosis of definitive infective endocarditis. As inclusion criteria, patients over 18 years of age hospitalized in these institutions and who met the definitive infective endocarditis criteria according to the modified Duke criteria were taken into account. Those patients without complete information in the clinical history for the collection of variables were excluded. Results 308 patients were included In hospital mortality was 32.7%. The main prognostic variables were: Complication with renal replacement therapy OR 6,669 CI 3.77 - 12.17, p< 0.001, moderate mitral compromise OR 3.9 CI 1.02-17.5, p=0.057, renal replacement therapy (RRT) prior to hospitalization OR 3.72 CI 1.89 - 7.51, p < 0.001 and central nervous system embolism OR 2.6 CI 1.53 - 4.44, p< 0.001. As protective factors: surgery during hospitalization OR 0.39 CI 0.24 - 0.64, p< 0.001 and tricuspid involvement OR 0.39 IC 0.15 - 0.87, p=0.032. Multivariate analysis of mortality with prehospital variables in patients with infective endocarditis. Abbreviations: GFR, Glomerular Filtration Rate. CKD-EPI, Chronic kidney disease epidemiology collaboration. LVEF, Left Ventricular Ejection Fraction Multivariate analysis of mortality with hospital variables in patients with infective endocarditis Abbreviations: RRT, renal replacement therapy. CNS, Central nervous system, mm: millimeters. ROC curve of the mortality prediction model with pre-hospital variables Conclusion Both the epidemiological characteristics and in-hospital mortality are similar to those reported in international studies. The main prognostic factor associated with in-hospital mortality was the development of acute kidney injury with indication for RRT. Disclosures All Authors: No reported disclosures.

OBJECTIVES Globally congenital heart disease mortality is declining, yet the proportion of infant deaths attributable to heart disease rises in Colombia and other middle-sociodemographic countries. We aimed to assess the accessibility of paediatric cardiac surgery (PCS) to children METHODS In Bogotá, Colombia, a multi-national team used cross-sectional and retrospective cohort study designs to adapt and evaluate 4 health system indicators at the national level: first, the population with timely geographic access to an institution providing PCS; second, the number of paediatric cardiac surgeons; third, this specialized procedure volume and its national distribution; and fourth, the 30-day perioperative mortality rate after PCS in Colombia. RESULTS Geospatial mapping approximates 64% (n = 9 894 356) of the under-18 Colombian population lives within 2-h drivetime of an institution providing PCS. Twenty-eight cardiovascular surgeons report performing PCS, 82% (n = 23) with formal training. In 2016, 1281 PCS procedures were registered, 90% of whom were performed in 6 of the country’s 32 departments. National non-risk-adjusted all-cause 30-day perioperative mortality rate after PCS was 2.73% (n = 35). CONCLUSIONS Colombia’s paediatric population had variable access to cardiac surgery in 2016, largely dependent upon geography. While the country may have the capacity to provide timely, high-quality care to those who need it, our study enables future comparative analyses to measure the impact of health system interventions facilitating healthcare equity for the underserved populations across Colombia and the Latin American region.

Background: Critical congenital heart disease (CCHD) make up a group of heart diseases present in newborns since the prenatal period and requiring early intervention through surgery or percutaneous interventions in the first year of life. Little is known about the societal economic impact associated with their care in low to middle income countries. We estimated direct medical costs, out-of-pocket expenditures and indirect costs of CCHD patients in Colombia. Methods: The methodology to estimate costs involved four stages: identification, measurement, and assessment of resources consumed, and total cost calculation. Regarding medical costs, hospital and ambulatory costs were estimated for the patient’s first year of life using clinical records of 73 patients and with thematic experts. A survey was carried out on 20 children´s caregivers to determine the out-of-pocket expenses and indirect costs. For this estimation, a descriptive analysis was made on the survey taking into account the reported salary. All costs are expressed in US dollars (2017 exchange rates). Results: The average direct medical hospital costs for CCHDs were $25,835 and the ambulatory costs reached $480. Indirect costs were $1,303 and out-of-pocket expenses were $2,058, which for families with an income lower than one monthly minimum wage (1 SMMLV) in 2017 correspond to $250. The impact on their budget was 57%. Conclusions: CCHDs represent an important economic impact both for the Colombian General Social Health System and for families. This study made it possible to estimate the costs that are not easily visible and thus quantified.

Introducción: la potencial asociación entre el tipo de tratamiento de la diabetes mellitus tipo 2 (DM2) y alteración de la función pulmonar es algo poco estudiado hasta ahora. Objetivos: comparar la función pulmonar de pacientes con DM2 que reciben tratamiento con insulina inyectable versus hipoglicemiantes orceles (Ho). Determinar si niveles de marcadores de inflamación en pacientes con tratamiento basado en insulina son diferentes a los de los tratados con HO. Métodos: estudio observacional analítico de corte transversal a partir de una muestra de conveniencia de 369 pacientes con diagnóstico de DM2, y tratamiento con insulina o Ho. se realizaron espirometrías, y se obtuvieron valores residuales promedios para VeF1, CVF y relación VeF1/CVF. Mediante regresión lineal múltiple, se ajustó por diferencias en determinantes conocidos de la función pulmonar, así como por control de la diabetes y tiempo desde el diagnóstico. Adicionalmente, se midieron niveles de marcadores inflamatorios sanguíneos para cada grupo de tratamiento. Resultados: 63 pacientes (17%) recibían tratamiento con insulina y 306 (83%) con Ho. la diferencia en residuales favoreció a los tratados con Ho. Para VeF1, CVF y VeF1/CVF la diferencia fue 57.6 ml (iC95% 32.45-82.74; P 0.0047), 45.6 ml (iC95% 20.84-70.39; P 0.0231) y 0.017, (iC95% 0.01- 0.02, P

Background In many countries, economic assessments of the routine use of pulse oximetry in the detection of Critical Congenital Heart Disease (CCHD) at birth has not yet been carried out. CCHDs necessarily require medical intervention within the first months of life. This assessment is a priority in low and medium resource countries. The purpose of this study was to assess the cost-effectiveness (CE) relation of pulse oximetry in the detection of cases of CCHD in Colombia. Methods A full economic assessment of the cost-effectiveness type was conducted from the perspective of society. A decision tree was constructed to establish a comparison between newborn physical examination plus pulse oximetry, versus physical examination alone, in the diagnosis of CCHDs. The sensitivity and specificity of pulse oximetry were estimated from a systematic review of the literature; to assess resource use, micro-costing analyses and surveys were conducted. The time horizon of the economic evaluation was the first week after birth and until the first year of life. The incremental cost-effectiveness ratio (ICER) was determined and, to control for uncertainty, deterministic and probabilistic sensitivity analysis were made, including the adoption of different scenarios of budgetary impact. All costs are expressed in US dollars from 2017, using the average exchange rate for 2017 [$2,951.15 COP for 1 dollar]. Results The costs of pulse oximetry screening plus physical examination were $102; $7 higher than physical examination alone. The effectiveness of pulse oximetry plus the physical examination was 0.93; that is, 0.07 more than the physical examination on its own. The ICER was $100 for pulse oximetry screening; that is, if one wishes to increase 1% the probability of a correct CCHD diagnosis, this amount would have to be invested. A willingness to pay of $26.292 USD (direct medical cost) per probability of a correct CCHD diagnosis was assumed. Conclusions At current rates and from the perspective of society, newborn pulse oximetry screening at 24 h in addition to physical examination, and considering a time horizon of 1 week, is a cost-effective strategy in the early diagnosis of CCHDs in Colombia. Trial registration “retrospectively registered”.

Introducción. El análisis de los costos derivados de las infecciones asociadas con la atención en salud representa un desafío para el sistema de salud en Colombia dados sus factores determinantes. Objetivo. Determinar los factores relacionados con el aumento y la variabilidad de los costos de la atención hospitalaria por las infecciones asociadas con la atención en salud en un hospital de cuarto nivel de Bogotá, entre el 2011 y el 2015. Materiales y métodos. Se analizaron los costos de la atención de 292 pacientes, los cuales se estimaron para cada una de las actividades realizadas desde el momento de sospechar el cuadro infeccioso hasta su resolución. Dichos costos se estandarizaron según el valor del manual tarifario del Instituto de Seguros Sociales, ajustándolos por el índice de precios al consumidor para salud hasta el año 2014. Se determinaron los factores relacionados con el aumento del costo del manejo mediante un modelo logístico condicional. Resultados. La estancia hospitalaria de nueve días o más antes de la infección, se asoció con el aumento del costo directo del manejo de las infecciones relacionadas con la atención en salud (odds ratio, OR=2,06; IC95% 1,11-3,63). El costo medio del manejo de las infecciones fue de COP $1.190.879. Los antibióticos representaron el 41 % del valor total del tratamiento, seguidos de los exámenes de laboratorio, con un costo equivalente al 13,5 %. Conclusión. Se encontró una relación entre el costo del manejo de las infecciones asociadas con la atención en salud y la estancia hospitalaria previa a su aparición. Los antecedentes patológicos de los pacientes no se relacionaron con el aumento de los costos. Introduction: The cost analysis of infections associated with health care represents a challenge for the health system in Colombia given their determinants. Objective: To determine the factors related to the increase and variability in the costs of hospital care for infections associated with health care in a fourth-level hospital in Bogotá from 2011 to 2015. Materials and methods: The costs of the care for 292 patients were analyzed including each of the activities carried out since the suspicion of the infectious disease until its resolution. These costs were standardized to the value of the Instituto de Seguros Sociales tariff manual adjusted by the annual consumer price index for health until 2014. The factors related to the increase in management costs were identified using a conditional logistic regression model. Results: A hospital stay of nine days or more prior to the infection was a factor associated with the increase of direct costs in the management of infections associated with health care (OR=2.06; 95% CI: 1.11-3.63). The median cost of the infections was COP $1.190.879. The antibiotic treatment represented 41% of the total value of the treatment, followed by laboratory tests with a cost equivalent to 13.5%. Conclusions: We found a relationship between the cost of the management of infections associated with health care and the hospital stay prior to their appearance. The pathological antecedents of the patients were not related to the increase in the cost.

BackgroundChronic obstructive pulmonary disease (COPD) is associated with increased risk of severe COVID-19, but the mechanisms are unclear. Besides, patients with severe COVID-19 have been reported to have increased levels of several immune mediators.ObjectiveTo perform an immunoproteomic profiling of dysregulated plasma proteins in patients with asthma and COPD and to evaluate their relationship with biomarkers of severe COVID-19.MethodsNinety-two proteins were quantified in 315 plasma samples from adult subjects (age 40-90 years) including 118 asthmatics, 99 COPD patients and 98 healthy controls, that have been recruited in two reference pneumology clinics in Colombia before the beginning of the COVID-19 pandemic. Protein levels were compared between each disease group and healthy controls.Significant proteins were compared to the gene signatures of SARS-CoV-2 infection reported in the “COVID-19 Drug and Gene Set Library” and with known protein biomarkers of severe COVID-19.ResultsForty-one plasma proteins showed differences between patients and controls. Asthmatic patients have increased levels in IL-6 while COPD patients have a broader systemic inflammatory dysregulation driven by HGF, OPG, and several chemokines (CXCL9, CXCL10, CXCL11, CX3CL1, CXCL1, MCP-3, MCP-4, CCL3, CCL4 and CCL11). These proteins are involved in chemokine signaling pathways related with response to viral infections and some, were found up-regulated upon SARS-CoV-2 experimental infection of Calu-3 cells as reported in the COVID-19 Related Gene Sets database. An increase of HPG, CXCL9, CXCL10, IL-6, MCP-3, TNF and EN-RAGE has also been found in patients with severe COVID-19.ConclusionsCOPD patients have altered levels of plasma proteins that have been reported increased in patients with severe COVID-19. Our study suggests that COPD patients have a systemic dysregulation in chemokine networks (including HGF and CXCL9) that could make them more susceptible to severe COVID-19. Our study also suggest that IL-6 levels are increased in some asthmatics and this may influence their immune response to COVID-19.

Background The evidence regarding patient related outcomes in children with infrequent congenital heart defects (I-CHD) is very limited. We sought to measure quality of life (QoL) in children with I-CHD, and secondarily, to describe QoL changes after one-year of follow-up, self-reported by children and through their caregivers’ perspective. Methods We assembled a cohort of children diagnosed with an I-CHD in a cardiovascular referral center in Colombia, between August 2016 and September 2018. At baseline and at one-year follow-up, a clinical psychology assessment was performed to establish perception of QoL. The Pediatric Quality of Life Inventory (PedsQL) 4.0 scale was used in both general and cardiac modules for patients and for their caregivers. We used a Mann-Whitney U test to compare scores for general and cardiac modules between patients and caregivers, while a Wilcoxon test was used to compared patients’ and caregivers’ baseline and follow-up scores. Results are presented as median and interquartile range. Results To date, QoL evaluation at one-year follow-up has been achieved in 112/157 patients (71%). Self-reported scores in general and cardiac modules were higher than the QoL perceived through their caregivers, both at baseline and after one-year of follow-up. When compared, there was no statistically significant difference in general module scores at baseline between patients (median = 74.4, IQR = 64.1–80.4) and caregivers scores (median = 68.4, IQR = 59.6–83.7), p = 0.296. On the contrary, there was a statistical difference in baseline scores in the cardiac module between patients (median = 79.6, IQR = 69.7–87.4) and caregivers (median = 73.6, IQR = 62.6–84.3), p = 0.019. At one-year of follow-up, scores for the general module between patients (median = 72.8, IQR = 59.2–85.9) and caregivers (median = 69.9, IQR = 58.1–83.7) were not statistically different (p = 0.332). Finally, a significant difference was found for cardiac module scores between patient (median = 75.0, IQR = 67.1–87.1) and caregivers (median = 73.1, IQR = 59.5–83.8), p = 0.034. Conclusions QoL in children with I-CHD can be compromised. However, children have a better perception of their QoL when compared with their caregivers’ assessments. To provide high-quality care, besides a thorough clinical evaluation, QoL directly elicited by the child should be an essential aspect in the integral management of I-CHD.

Qualitative research of brigades and the family experience of congenital heart disease is of current interest and has been previously neglected. This study aimed to explore the social factors conditioning outcomes of paediatric cardiology care in the setting of Colombian medical brigades and to identify feasible strategies to improve the experience of the beneficiary populations. Participants were selected using purposeful sampling. Semi-structured interviews were conducted with members of logistic and health care teams, caregivers and custodians of beneficiary children of the Programme. The data collected provided an understanding of the health culture, social background, household and intrafamily dynamics. The outcomes of the Programme are influenced by sociocultural dynamics such as communication gaps and the socioeconomic status of the beneficiary populations. Findings may be specific to brigades, but also cross-relevant to any family experience of a new diagnosis of Congenital Heart Disease (CHD) communicating with healthcare professionals. It is important to foresee the role and further development of the Programme. Recommendations are provided suggesting innovative work by means of telemedicine and other sociocultural measures to reduce healthcare inequity and strengthen comprehensive healthcare programmes.

Objective: The objective of this study was to calculate the direct costs of postoperative atrial fibrillation (POAF) in a high-complexity cardiovascular hospital. Methods: We performed a cost analysis with a pairwise-matched design. Twenty-two patients with POAF and 22 patients without this complication were included. Pair-matching was performed (1:1) based on the following criteria: identical type of surgery, similar EuroSCORE II values, and absence of any other postoperative complication. Results: The total hospital cost was significantly higher in the POAF group than in the non-POAF group (US$ 10,880 [± 2,688] vs. US$ 8,856 [± 1,782], respectively, for each patient; P=0.005). This difference was attributable to postoperative costs (US$ 3,103 [± 1,552] vs. US$ 1,238 [± 429]; P=0.0001) for patients with or without POAF, respectively. The median postoperative lengths of stay were 9 (range 5-17) and 5 (3-9) days for patients with and without POAF (P=0.032), respectively. Preoperatively, no differences were found in the EuroSCORE II values (median 1.7 vs. 1.6, respectively; P=0.91) or direct costs (US$ 1,127 vs. US$ 1,063, respectively; P=0.56) between POAF and non-POAF groups. Conclusion: POAF generates a high economic burden in the overall costs of cardiac surgery, and our results reveal the differential contribution of each of the evaluated factors. This information, which was previously unavailable in this setting, is essential for the development of more effective prevention strategies.

Summary Background & aims Hospitalized patients show a high rate of malnutrition, which is associated with poor patient outcomes and high healthcare costs. However, relatively few studies have investigated the association between clinical and economic outcomes and malnutrition in hospitalized patients, particularly those with cardiac and pulmonary conditions. Methods This multicenter prospective observational cohort study included 800 patients hospitalized at four Colombian hospitals with a diagnosis of congestive heart failure, acute myocardial infarction, community-acquired pneumonia, or chronic obstructive pulmonary disease. All patients were screened for malnutrition using the Malnutrition Screening Tool (MST). A descriptive analysis of baseline variables was followed by multivariate analysis and inverse probability weighting (IPW) to compare the clinical outcomes, i.e., length of stay (LOS), mortality, and readmission, and hospital costs associated with a positive MST result. Results The prevalence of a positive MST result was 24.62% (n = 197) and was more common in patients with older age and greater comorbidities. Multivariate analysis controlling for age, gender, healthcare plan, university degree, hospitalization, entrance disease and Charlson co-morbidity index showed that a positive MST result was associated with increased LOS (1.43 ± 0.61 days) and both in-hospital mortality (odds ratio, 2.39) and global mortality (odds ratio, 2.52). IPW analysis confirmed the association between a positive MST result and increased hospital LOS and 30-day mortality, as well as a relative increase of 30.13% in the average cost associated with hospitalization. Conclusions This study of hospital inpatients demonstrated a high burden of malnutrition at the time of hospital admission, which negatively impacted LOS and mortality and increased the costs of hospitalization. These findings underscore the need for improved diagnosis and treatment of hospital malnutrition to improve patient outcomes and reduce healthcare costs.

Lansang, Dennis, Volmink and Macfarlane introduce the reader to the value of epidemiology in providing evidence for health-care policy and practice. They provide an overview of epidemiological principles and methods, and offer some practical considerations in designing some major types of study. They emphasize the importance of asking the right research question, choosing the most appropriate study design and sample size, avoiding bias, presenting results with measures of uncertainty, and critically appraising and sharing findings with caution. Drawing on case studies from around the world, the authors provide guidance for decision-makers about the relevance of epidemiology to their work and about how to assess the appropriateness of evidence for improved policy formulation and implementation.

Background The PeriOperative ISchemia Evaluation-2 (POISE-2) trial compared aspirin with placebo after noncardiac surgery. Methods The authors randomly assigned 10,010 patients undergoing noncardiac surgery to receive 200 mg aspirin or placebo 2 to 4 h before surgery and then 100 mg aspirin daily or placebo daily for up to 30 days after surgery. Herein, the authors report the effect of aspirin on venous thromboembolism (VTE), including deep vein thrombosis and pulmonary embolism, as well as an updated pooled analysis of randomized trials of antiplatelet therapy for VTE prevention in noncardiac surgery patients. Results Six thousand five hundred forty-eight patients (65.4%) received anticoagulant prophylaxis. VTE occurred in 53 patients (1.1%) allocated to aspirin and in 60 patients (1.2%) allocated to placebo (hazard ratio, 0.89; 95% CI, 0.61 to 1.28). Major or life-threatening bleeding occurred in 312 patients (6.3%) allocated to aspirin and in 256 patients (5.1%) allocated to placebo (hazard ratio, 1.22; 95% CI, 1.04 to 1.44). Concomitant use of anticoagulant prophylaxis did not modify the effect of aspirin on VTE or bleeding. Pooled analysis of the POISE-2 and Pulmonary Embolism Prevention trials demonstrated that symptomatic VTE occurred in 173 (1.3%) of 13,724 patients allocated to aspirin and in 246 (1.8%) of 13,730 patients allocated to placebo (odds ratio, 0.71; 95% CI, 0.56 to 0.89; heterogeneity P = 0.27; I2 = 17%); the impact of aspirin was very similar in those who did and did not receive pharmacologic prophylaxis. Pooled estimates for symptomatic VTE were similar to the pooled estimates for any deep vein thrombosis and pulmonary embolism from the POISE-2 trial, Pulmonary Embolism Prevention trial, and the Antiplatelet Trialists’ Collaboration meta-analysis. Conclusions Aspirin in the POISE-2 trial did not reduce VTE, but two thirds of patients received anticoagulant prophylaxis, there were few VTE events, and results were consistent with a wide range of aspirin effects. A pooled analysis of the randomized trials demonstrates evidence for the efficacy of aspirin for VTE prevention in hospitalized surgical patients.

Marshall Tulloch-Reid and colleagues argue that development of research capacity in Latin America and the Caribbean requires investment in both individuals and regional institutions

Objetivo: En el año 2012 se desarrolló para Colombia la guía de práctica clínica para manejo de la Hipertensión arterial (HTA). Esta evaluación económica (EE) fue desarrollada para identificar la costo-efectividad de los diferentes tratamientos farmacológicos usados como monoterapia, y soportar las recomendaciones en la guía. Diseño: Se simuló una cohorte de pacientes adultos, con diagnóstico de hipertensión arterial. La EE se basó en un modelo desarrollado para el National Institute for Clinical Excellence (NICE) del Reino Unido. Este modelo fue adaptado para Colombia en consumo de recursos y costos. La efectividad de las intervenciones y probabilidades de transición fueron actualizadas para 2012. Resultados: Los resultados del análisis del caso de referencia (hombre y mujer de 65 años, 2% de riesgo anual de enfermedad CV, 1% de falla cardíaca, 1.1% de diabetes, 20 años de seguimiento), mostraron que los años de vida ajustados por calidad (QALY) obtenidos con la terapia de diuréticos, inhibidores de enzima convertidora/bloquedores del receptor de angiotensina (ACEi/ARB) y calcio-antagonistas fue 9.24, 9.24 y 9.26, respectivamente. Los costos favorecen a los diuréticos (COP$6,498,624), en comparación con ACEi/ARB o calcio-antagonistas (COP$13,178,919, y COP$27,774,098), respectivamente. La terapia con beta-bloqueadores y la no intervención fueron dominadas. Conclusiones: La opción de tratamiento con diuréticos tipo tiazidas como mono-terapia inicial es la más costo-efectiva. La principal diferencia entre las alternativas está dada especialmente por las diferencias en el costo de los medicamentos, ya que la efectividad es similar entre los tratamientos con diuréticos y ACEi/ARB, y sólo discretamente mejor con calcio-antagonistas.

This is a protocol for a Cochrane Review (Intervention). The objectives are as follows: To compare the efficacy and safety of adding oral theophylline or doxofylline to usual treatment (long‐acting beta(2)‐agonists, antimuscarinics, inhaled corticosteroids) versus providing usual treatment alone for patients with stable COPD.

Objetivo Determinar la percepción sobre la calidad de vida relacionada con salud (CVrS) que tiene la población adulta en Colombia.Métodos encuesta poblacional en una muestra representativa de la población rural y urbana, de 18 y más años. Se midió la CVrS con el instrumento EQ5D-3L y la escala visual análoga, como parte de la cuarta Encuesta Nacional de Salud Mental. Las estimacionesfueron ajustadas por el diseño de muestreo y se acompañan de intervalos de confianza al 95 %.Resultados 1 0867 personas completaron la medición; 69,7 % (IC95 % 66,9 a 68,9) de la población reporto estar en “salud completa”; la mayor proporción de personas valoraronsu salud por encima de 80 puntos. La presencia de “moderado dolor o malestar”, seguida de estar “moderadamente angustiado o deprimido” fueron las alteraciones más frecuentes. Los adultos jóvenes tienden a valorar mejor su salud que los adultosmayores. No hay diferencias en la percepción de la salud entre regiones del país.Conclusiones La calidad de vida relacionada con salud en la población colombiana es mayor de 80 puntos en una escala de 1 a 100. Las alteraciones como angustia y depresión y la percepción del dolor, fueron las más comúnmente reportadas por los colombianos. La situación de pobreza y el bajo nivel educacional son determinantes de la valoración que hacen los colombianos de su CVrS. Objective To determine the perception about quality of life related to health in the adult population of Colombia.Methods Population-based survey applied on a representative sample of the Colombian rural and urban population, aged 18 years or more. Quality of life related to health was measured using the generic EQ5D instrument and the analogue visual scale aspart of the fourth National Mental Health Survey. Estimates were accompanied by 95 % confidence intervals and were adjusted by the sampling design.Results 10 867 people aged 18 years or older completed the measurement. 69.7 % (CI95 %; 66.9-68.9) of the population reported being "completely healthy". Most of the population rated their health condition above 80 points. The presence of "moderatepain or discomfort", followed by being "moderately distressed or depressed" were the most frequent alterations. Young adults tend to perceive their health better than older adults. There is no difference in the perception of health between regions of the country.Conclusions Quality of life related to health in the Colombian population is greater than 80 points on a scale of 1 to 100. Alterations such as angst and depression and the perception of pain were the most frequently reported by Colombians. Poverty and alow level of education are determinants of the perception of Colombians regarding their quality of life related to health.

Objetivo: realizar una aproximación a la determinación de costos directos de la falla cardíaca (FC) en el país, a través de la evaluación de costos asociados con el cuidado de pacientes atendidos en dos instituciones prestadoras de salud de Bogotá. Métodos: estudio de costos bajo la perspectiva del tercer pagador. La identificación de eventos generadores de costos en atención ambulatoria se realizó mediante revisión de historias clínicas de pacientes atendidos durante 2011 en la consulta externa especializada de una institución. Los costos de interconsultas y paraclínicos se determinaron según los valores del Acuerdo 256 de 2001, con adición del 30%. Los costos de la medicación se determinaron a partir del registro SISMED. La identificación de eventos generadores de costos en hospitalización se realizó mediante revisión de listados y facturas de pacientes atendidos entre 2009 y 2010 en dos instituciones. Los resultados se presentan resumidos por medidas de tendencia central y de dispersión, en pesos colombianos (COP) de 2011. Resultados: el costo mensual promedio del tratamiento ambulatorio de FC fue de 304.318 COP (D.E. 760.876), con una mediana de 45.280 COP (RIC 25.539 - 109.715); los medicamentos representaron la fuente principal de consumo de recursos (55,2%). El costo promedio de la hospitalización por descompensación de FC fue de 6.427.887 COP (D.E. 9.663.176); la estancia hospitalaria representó la mayor proporción del costo (29,1%). Conclusiones: los costos ambulatorios, y especialmente los hospitalarios, asociados con la FC en Colombia son sustanciales. La fuente principal de costos difiere dependiendo de si el manejo es hospitalario (estancia) o ambulatorio (medicamentos).

Resumen Se presenta el caso de un hombre de 68 años inmunosuprimido, en periodo tardío postrasplante hepático por cirrosis alcohólica en quien se encuentra de manera incidental atelectasia redonda del pulmón en estudios imagenológicos. El paciente cursaba asintomático y como único hallazgo positivo al examen físico presentaba estertores finos basales. No fue posible encontrar factores etiológicos relacionados, por lo que se categorizó como un caso idiopático. (Acta Med Colomb 2013; 38: 258-261). Abstract We present the case of a 68 year old immunosuppressed man, in the late period after liver transplant for alcoholic cirrhosis and in whom incidentally imaging studies showed a lung round atelectasis. The patient was asymptomatic and the only positive finding on physical examination was fine basal rales. It was impossible to find related etiological factors, so the case was categorized as idiopathic. (ActaMed Colomb 2013; 38: 258-261).

Resumen Fundamento y objetivo La relacion del lactato y la mortalidad en sepsis no ha sido explorada adecuadamente en el paciente normotenso. Nuestro objetivo fue determinar la utilidad del lactato como factor pronostico de mortalidad a los 28 dias en pacientes admitidos en el Servicio de Urgencias con diagnostico clinico de sepsis y sin shock septico. Pacientes y metodo Analisis secundario del estudio La epidemiologia de la sepsis en Colombia , una cohorte prospectiva de pacientes en 10 hospitales generales de 4 ciudades de Colombia. Se incluyeron en este analisis los pacientes sin hipotension, con disponibilidad de lactato y admitidos con infecciones adquiridas en la comunidad confirmadas con los criterios de los Centers for Disease Control and Prevention . Se realizo una regresion logistica controlando para la edad, el sexo, las comorbilidades y la puntuacion de gravedad. Resultados Se incluyeron 961 pacientes, con edad media (DE) de 57,2 (21,0) anos, el 54,2% eran mujeres, la puntuacion SOFA (Sequential Organ Failure Assessment) promedio fue de 3,0 (2,3) y el APACHE (Acute Physiologic and Chronic Health Evaluation) de 11,1 (6,4). Se observo un buen ajuste al modelo lineal entre el lactato y el riesgo de muerte, y al ajustar por los factores de confusion el lactato se asocio de manera significativa con la mortalidad ( odds ratio 1,16, intervalo de confianza del 95% 1,02-1,33). Conclusion El valor de lactato se asocia de forma independiente y significativa con la mortalidad a los 28 dias entre los pacientes con infeccion que se presentan en el Departamento de Urgencias sin hipotension. Ademas, la mortalidad se incrementa de manera lineal con los valores de lactato serico a partir de cualquier valor detectable.

The long-acting bronchodilator tiotropium and single-inhaler combination therapy of inhaled corticosteroids and long-acting beta2-agonists (ICS/LABA) are commonly used for maintenance treatment of patients with chronic obstructive pulmonary disease (COPD). Combining these treatments, which have different mechanisms of action, may be more effective than administering the individual components.To assess relative effects of the following treatments on markers of exacerbations, symptoms, quality of life and lung function in patients with COPD.• Tiotropium plus LABA/ICS versus tiotropium.• Tiotropium plus LABA/ICS versus LABA/ICS.We searched the Cochrane Airways Group Specialised Register of Trials (April 2015), ClinicalTrials.gov (www.ClinicalTrials.gov), the World Health Organization (WHO) trials portal and reference lists of relevant articles.We included parallel, randomised controlled trials (RCTs) lasting three months or longer conducted to compare ICS and LABA combination therapy in addition to inhaled tiotropium versus tiotropium alone or combination therapy alone.We independently assessed trials for inclusion, then extracted data on trial quality and outcome results. We contacted study authors to ask for additional information. We collected trial information on adverse effects.Tiotropium plus LABA/ICS versus tiotropiumWe included six studies (1902 participants) with low risk of bias that compared tiotropium in addition to inhaled corticosteroid and long-acting beta2-agonist combination therapy versus tiotropium alone. Investigators found no statistically significant differences in mortality between treatments (odds ratio (OR) 1.80, 95% confidence interval (CI) 0.55 to 5.91; two studies; 961 participants), a reduction in all-cause hospitalisations with the use of combined therapy (tiotropium + LABA/ICS) (OR 0.61, 95% CI 0.40 to 0.92; two studies; 961 participants; number needed to treat for an additional beneficial outcome (NNTB) 19.7, 95% CI 10.75 to 123.41). The effect on exacerbations was heterogeneous among trials and was not meta-analysed. Health-related quality of life measured by St. George's Respiratory Questionnaire (SGRQ) showed a statistically significant improvement in total scores with use of tiotropium + LABA/ICS compared with tiotropium alone (mean difference (MD) -3.46, 95% CI -5.05 to -1.87; four studies; 1446 participants). Lung function was significantly different in the combined therapy (tiotropium + LABA/ICS) group, although average benefit with this therapy was small. None of the included studies included exercise tolerance as an outcome.A pooled estimate of these studies did not show a statistically significant difference in adverse events (OR 1.16, 95% CI 0.92 to 1.47; four studies; 1363 participants), serious adverse events (OR 0.86, 95% CI 0.57 to 1.30; four studies; 1758 participants) and pneumonia (Peto OR 1.62, 95% CI 0.54 to 4.82; four studies; 1758 participants). Tiotropium plus LABA/ICS versus LABA/ICSOne of the six studies (60 participants) also compared combined therapy (tiotropium + LABA/ICS) versus LABA/ICS therapy alone. This study was affected by lack of power; therefore results did not allow us to draw conclusions for this comparison.In this update, we found new moderate-quality evidence that combined tiotropium + LABA/ICS therapy compared with tiotropium plus placebo decreases hospital admission. Low-quality evidence suggests an improvement in disease-specific quality of life with combined therapy. However, evidence is insufficient to support the benefit of tiotropium + LABA/ICS for mortality and exacerbations (moderate- and low-quality evidence, respectively). Of note, not all participants enrolled in the included studies would be candidates for triple therapy according to current international guidance.Compared with the use of tiotropium plus placebo, tiotropium + LABA/ICS-based therapy does not increase undesirable effects such as adverse events or serious non-fatal adverse events.

More evidence is needed that links the diagnosis of different congenital heart diseases (CHD) identified after birth, with intermediate altitudes above sea level in geographically and ethnically diverse populations. Our aim was to estimate relative frequencies of CHD diagnosis by altitude and gender in the pediatric population of 12 cities in Colombia. This was a cross-sectional study based on the information collected between 2008 and 2013 in Colombia, during annual congenital heart disease (CHD) case detection campaigns in the post-natal period. All children underwent physical examination, pulse-oximetry, and echocardiography. The odds ratio (OR) was used as the summary statistic to assess associations with altitude in the relative frequency of CHD diagnosis. Data from 5900 children who attended the campaigns were evaluated (54.3 % male), out of which 3309 (56.1 %) were diagnosed with CHD. There were statistically significant differences in the relative distribution of the different CHD by city altitude and gender (p

Proper defect closure during abdominal wall reconstruction (AWR) is a key to improving cosmetic and functional results, and reducing morbidity. We have completed the initial prospective evaluation of a technique we previously described and published: endoscopic subcutaneous anterior component separation (ACS) as an adjunct to mainly laparoscopic AWR. We now present the long-term clinical and imaging follow-up results. Data were prospectively collected over a 3-year period (2012–2015) on patients who underwent AWR with endoscopic ACS. Inclusion criteria included the following: defects of 6–15 cm that are longer than wider; no skin dystrophy; no loss of domain; no active infection; no previous multiple, complex repairs; no previous multiple mesh repairs; and no high probability of severe adhesions. All patients were followed up clinically at 3, 6, and 12 months postoperatively and then annually. All patients underwent CT scanning of the abdominal wall (sagittal, axial, coronal, and 3D reconstruction) at 3 months and 1 year postoperatively and then annually. Twenty consecutive patients underwent adjunctive endoscopic ACS: 17 laparoscopic AWRs, 2 open repairs, and 1 hybrid repair. Up to 38 months (mean 21 months) of follow-up, there were no ventral hernia recurrences or de novo hernias at the ACS site. One patient experienced partial primary closure failure. Morbidity consisted in one case each of hematoma, seroma, and transient neuralgia. Cosmetic results and patient satisfaction were excellent. We confirmed that endoscopic subcutaneous ACS is a safe, effective, reliable, reproducible technique that facilitates primary closure of defects during AWR in selected patients.

Background: Several studies have shown variations in the prevalence of allergic rhinitis (AR) around the world, and different potential predisposing factors. More studies are needed on risk factors, specifically in developing countries. This study explored the association of several factors and AR among urban residents in six cities of Colombia. Methodology: A cross-sectional study and a nested case-control study were carried out between 2009 and 2010 involving two Colombian subpopulations: children/adolescents and adults. Cases were affirmative respondents to “In the past 12 months, have you (or your child) had a problem with sneezing or a running or blocked nose, when you (or your child) did not have a cold or the flu?” “Controls” were subjects who never had been diagnosed with asthma, AR or atopic eczema by a physician, and whom did not report any symptoms in the past twelve months. Weighted logistic regression was used to assess the association of different factors with case/control status. Results: Factors associated with AR in children/adolescents were family history of AR, acetaminophen consumption and high socioeconomic status. Among adults, family history of asthma, AR and atopic eczema, and cetaminophen consumption were associated with AR. Consumption of cereals among children/adolescents and eating eggs among adults showed protective associations. Conclusions: Our findings suggest the presence of previously unknown cultural, environmental and family factors associated with the presence of AR in Colombia. © 2016, AMC. All rights reserved.

Background Bariatric surgery is the most effective treatment for gastro-esophageal reflux disease (GERD) in obese patients, with the Roux-en-Y gastric bypass being the technique preferred by many surgeons. Published data reporting the results of laparoscopic sleeve gastrectomy (LSG) in patients with GERD are contradictory. In a previous observational study, we found that relative narrowing of the distal sleeve, hiatal hernia (HH), and dilation of the fundus predispose to GERD after LSG. In this study, we evaluated the effects of standardization of our LSG technique on the incidence of postoperative symptoms of GERD. Methods This was a concurrent cohort study. Patients who underwent bariatric surgery at our center were followed prospectively. LSG was performed in all patients in this series. Results A total of 234 patients underwent surgery. There were no cases of death, fistula, or conversion to open surgery. All 134 patients who completed 6–12 months of postoperative follow-up were evaluated. Excess weight loss at 1 year was 73.5 %. In the study group, 66 patients (49.2 %) were diagnosed with GERD preoperatively, and HH was detected in 34 patients (25.3 %) intraoperatively. HH was treated by reduction in three patients, anterior repair in 28, and posterior repair in three. Only two patients (1.5 %) had symptoms of GERD at 6–12 months postoperatively. Conclusions Our results confirm that careful attention to surgical technique can result in significantly reduced occurrence of symptoms of GERD up to 12 months postoperatively, compared with previous reports of LSG in the literature.

Antifibrinolytic agents are used during cardiac surgery to minimize bleeding and reduce exposure to blood products. Several reports suggest that tranexamic acid (TA) can induce seizure activity in the postoperative period. To examine factors associated with postoperative seizures in patients undergoing cardiac surgery who received TA. University-affiliated hospital. Case-control study. Patients undergoing cardiac surgery with cardiopulmonary bypass (CPB) between January 2008 and December 2009 were identified. During this time, all patients undergoing heart surgery with CPB received TA. Cases were defined as patients who developed seizures that required initiation of anticonvulsive therapy within 48 h of surgery. Exclusion criteria included subjects with preexisting epilepsy and patients in whom the convulsive episode was secondary to a new ischemic lesion on brain imaging. Controls who did not develop seizures were randomly selected from the initial cohort. From an initial cohort of 903 patients, we identified 32 patients with postoperative seizures. Four patients were excluded. Twenty-eight cases and 112 controls were analyzed. Cases were more likely to have a history of renal impairment and higher preoperative creatinine values compared with controls (1.39 ± 1.1 vs. 0.98 ± 0.02 mg/dL, P = 0.02). Significant differences in the intensive care unit, postoperative and total lengths of stay were observed. An association between high preoperative creatinine value and postoperative seizure was identified. TA may be associated with the development of postoperative seizures in patients with renal dysfunction. Doses of TA should be reduced or even avoided in this population.

Our aim was to determine the frequency and the clinical and epidemiologic characteristics of sepsis in a hospital-based population in Colombia.Prospective cohort.Ten general hospitals in the four main cities of Colombia.Consecutive patients admitted in emergency rooms, intensive care units, and general wards from September 1, 2007, to February 29, 2008, with confirmation of infection according to the Centers for Disease Control and Prevention definitions.None.The following information was recorded: demographic, clinical, and microbiologic characteristics; Acute Physiology and Chronic Health Evaluation II and Sequential Organ Failure Assessment scores; requirement for intensive care unit; length of stay; and 28-day all-cause mortality. During a period of 6 months, 2,681 patients were recruited: 69% and 31% with community-acquired and hospital-acquired infections, respectively. The mean age was 55 yrs (SD = 21), 51% were female, and the median length of stay was 10 days (interquartile range, 5-19). The mean Acute Physiology and Chronic Health Evaluation score was 11.5 (SD = 7) and the mean Sequential Organ Failure Assessment score was 3.8 (SD = 3). A total of 422 patients with community-acquired infections (16%) were admitted to the intensive care unit as a consequence of their infection and the median length of stay was 4.5 days in the intensive care unit. At admission, 2516 patients (94%) met at least one sepsis criterion and 1,658 (62%) met at least one criterion for severe sepsis. Overall, the 28-day mortality rates of patients with infection without sepsis, sepsis without organ dysfunction, severe sepsis without shock, and septic shock were 3%, 7.3%, 21.9%, and 45.6%, respectively. In community-acquired infections, the most frequent diagnosis was urinary tract infection in 28.6% followed by pneumonia in 22.8% and soft tissue infections in 21.8%. Within hospital-acquired infections, pneumonia was the most frequent diagnosis in 26.6% followed by urinary tract infection in 20.4% and soft tissue infections in 17.4%.In a general inpatient population of Colombia, the rates of severe sepsis and septic shock are higher than those reported in the literature. The observed mortality is higher than the predicted by the Acute Physiology and Chronic Health Evaluation II score.

Introducción y objetivo: En Colombia faltan datos fiables sobre el comportamiento de la sepsis. Se pretende determinar la prevalencia de los microorganismos en las principales infecciones tratadas en las unidades de cuidados intensivos (UCI) de nuestro país. Métodos: Este es un subestudio de una cohorte prospectiva recolectada en 10 hospitales durante 6 meses. Los criterios de inclusión eran hospitalización en UCI y confirmación de una infección según las definiciones del CDC, considerando tres grupos (comunidad, hospital, UCI) según el sitio de adquisición de la infección. Resultados: Se incluyó en el análisis a 826 pacientes; el 51% contrajeron procesos infecciosos extrahospitalarios; el 5,33%, en el hospital y el 43,7%, en UCI. Los diagnósticos más frecuentes fueron neumonía (29,54%), infección intraabdominal (18,16%) e infección del tracto urinario (11,62%). El microorganismo más frecuente en las infecciones extrahospitalarias fue Escherichia coli -pulmón (16,4%), peritoneo (57,7%), orina (55,5%) y sangre (22,4%)-. En las adquiridas en UCI predomina también E. coli -peritoneo (29,3%) y orina (52,9%)-, excepto en pulmón y sangre, en los que fueron Staphylococcus aureus (32,4%) y Klebsiella pneumoniae (15,7%) los más prevalentes. Se tomaron cultivos a 655 pacientes, de los que el 40% recibió antibióticos antes de la toma, sin que esto afectara al porcentaje de positividad (p=0,583). Conclusiones: La neumonía fue la infección más frecuente independientemente del sitio de adquisición. E. coli fue el patógeno más prevalente, excepto en las infecciones pulmonares adquiridas en UCI, donde lo fue S. aureus. Background and objective: Valid and reliable data regarding sepsis is lacking in Colombia. Our aim was to determine the prevalence of the microorganisms in the main infections treated in Intensive Care Units (ICUs) in our country. Methods: This is a sub-study of a prospective cohort with 10 general hospitals in Colombia during a 6-month period. The inclusion criteria were hospitalization in ICU and confirmation of infection according to the CDC definitions. Patients were classified into three groups, that is, community, hospital and intensive care, according to the site where the infection was acquired. Results: A total of 826 patients were included in this analysis. Of these, 51% developed infections in the community, 5.33% in the hospital and 43.7% in intensive care unit. Overall, the most common diagnoses were pneumonia (29.54%), intra-abdominal infection (18.16%) and urinary tract infection (11.62%). The most frequent germ in community-acquired infections was E. coli -lung (16. 4%), peritoneum (57.7%), urine (55.5%), blood (22.4%)-. E. coli -peritoneum (29.3%), urine (52.9%)- also predominated in the ICU-acquired infections, except for lung and blood in which Staphylococcus aureus (32.4%) and Klebsiella pneumoniae (15.7%) were the most prevalent. Cultures were requested from 655 patients, 40% of them having received antibiotics before cultures were taken, although this did not affected the percentages of positive cultures (P=0.583). Conclusions: Pneumonia was the main cause of infection regardless of the site of acquisition. E. coli was the most prevalent germ, except in the pulmonary infections acquired in UCI in which S. aureus was the most prevalent.

Introducción. Los valores de referencia para parámetros de la función pulmonar aplicables a otras poblaciones, han mostrado ser poco válidos en la interpretación de las pruebas de función pulmonar en la población adulta residente en Bogotá. Objetivo. Identificar cuál de cuatro modelos de predicción generados en poblaciones con características étnicas similares a la población colombiana, es el más adecuado para utilizar en adultos de Bogotá. Materiales y métodos. Se reclutaron 534 sujetos de ambos sexos entre los 18 y los 65 años de edad, no fumadores, libres de alteraciones pulmonares, trabajadores de tres empresas privadas y residentes en Bogotá por más de cinco años. La función pulmonar se midió por curva de flujo volumen. Se estimaron las diferencias observadas entre valores predichos y observados, y se calcularon los límites por el método de Bland y Altman. Se aceptaron como válidos los modelos que presentaron un error de predicción promedio máximo de 5% del valor observado en cada parámetro. Resultados. Demostraron ser válidos en esta población los modelos: Crapo para capacidad vital forzada (CVF) en hombres; Pérez-Padilla, para CVF en mujeres y para la relación con el volumen espiratorio forzado en el primer segundo (VEF1/CVF) en ambos grupos y los de Hankinson para mexicano-americanos para todos los parámetros en ambos sexos. Conclusiones. Los modelos de Hankinson demostraron ser los más adecuados para predecir todos los parámetros de la espirometría; sin embargo, dejan un porcentaje de mala clasificación promedio de 7%. Se requiere generar modelos propios con mayor precisión pronóstica en la población de Bogotá.

Recognition of the need for systematically developed clinical practice guidelines (CPGs) has increased dramatically over the past 20 years. CPGs have focused primarily on the effectiveness of interventions, explicitly or implicitly addressing the following question: Will adherence to a recommendation do more good than harm? At times they have also focused on the cost-effectiveness of interventions: Are the net benefits worth the costs? They rarely have focused on equity: Are the recommendations fair? The Knowledge Plus Project of the International Clinical Epidemiology Network attempts to improve the process of CPG development by formulating strategies to consider not just technical issues (effectiveness, and efficiency) but sociopolitical dimensions as well (equity and local appropriateness). This article discusses a proposed lens for users to evaluate how well CPGs address issues of equity.

To determine the perception about quality of life related to health in the adult population of Colombia.Population-based survey applied on a representative sample of the Colombian rural and urban population, aged 18 years or more. Quality of life related to health was measured using the generic EQ5D instrument and the analogue visual scale as part of the fourth National Mental Health Survey. Estimates were accompanied by 95 % confidence intervals and were adjusted by the sampling design.10 867 people aged 18 years or older completed the measurement. 69.7 % (CI95 %; 66.9-68.9) of the population reported being "completely healthy". Most of the population rated their health condition above 80 points. The presence of "moderate pain or discomfort", followed by being "moderately distressed or depressed" were the most frequent alterations. Young adults tend to perceive their health better than older adults. There is no difference in the perception of health between regions of the country.Quality of life related to health in the Colombian population is greater than 80 points on a scale of 1 to 100. Alterations such as angst and depression and the perception of pain were the most frequently reported by Colombians. Poverty and a low level of education are determinants of the perception of Colombians regarding their quality of life related to health.Determinar la percepción sobre la calidad de vida relacionada con salud (CVrS) que tiene la población adulta en Colombia.Encuesta poblacional en una muestra representativa de la población rural y urbana, de 18 y más años. Se midió la CVrS con el instrumento EQ5D-3L y la escala visual análoga, como parte de la cuarta Encuesta Nacional de Salud Mental. Las estimaciones fueron ajustadas por el diseño de muestreo y se acompañan de intervalos de confianza al 95 %.1 0867 personas completaron la medición; 69,7 % (IC95 % 66,9 a 68,9) de la población reporto estar en "salud completa"; la mayor proporción de personas valoraron su salud por encima de 80 puntos. La presencia de "moderado dolor o malestar", seguida de estar "moderadamente angustiado o deprimido" fueron las alteraciones más frecuentes. Los adultos jóvenes tienden a valorar mejor su salud que los adultos mayores. No hay diferencias en la percepción de la salud entre regiones del país.La calidad de vida relacionada con salud en la población colombiana es mayor de 80 puntos en una escala de 1 a 100. Las alteraciones como angustia y depresión y la percepción del dolor, fueron las más comúnmente reportadas por los colombianos. La situación de pobreza y el bajo nivel educacional son determinantes de la valoración que hacen los colombianos de su CVrS.

There is no clear relationship between type 2 diabetes mellitus and lung function decline; it is also unclear whether the type of treatment can modify spirometric variables and levels of inflammatory biomarkers. To compare pulmonary function in patients with type 2 diabetes treated with an insulin-sensitizing agent (metformin) and in those treated with secretagogues, as well as combined with insulin, and to evaluate differences in inflammatory biomarkers between treatment groups. We conducted a cross-sectional analytic study in 196 diabetic patients with type 2 diabetic mellitus. Spirometric variables and levels of inflammatory biomarkers (ferritin, fibrinogen, C-reactive protein, interleukin 6, tumor necrosis factor-alpha), were obtained. Residual values (observed minus expected) for forced vital capacity and for forced expiratory volume were calculated and compared between treatment types. Differences in median levels of biomarkers were also compared. After adjustment by known determinants of lung function, and by the control and duration of type 2 diabetes, patients treated with the insulin-sensitizing agent had statistically significant lower differences against expected values for forced vital capacity compared with secretagogues (-212.1 ml vs 270.2 ml, p=0.039), as well as for forced expiratory volume, but without statistical significance (-133.2 mL vs -174.8 mL, p0.05). In the group of patients treated with the insulin-sensitizing agent, ferritin and tumor necrosis factor-alpha levels were lower (p0.01). This study supports the hypothesis that insulin-sensitizing agents appear to be associated with less deterioration of lung function and less systemic inflammation in type 2 diabetes. The present study serves to formulate new hypothesis and research projects.

Introducción: los usuarios de literatura médica disponen de gran cantidad de estudios publicados, con calidad metodológica variable por diversos motivos. Realizamos una descripción de las características de publicaciones recuperadas de cardiología, endocrinología, nefrología y neumología, mediante PubMed, incluyendo características de calidad por filtros Clinical Queries de Pubmed, idioma y década de publicación. Metodología: se realizó un estudio descriptivo. Se seleccionaron diez términos MeSH (Medical Subject Headings) de Medline, representativos de cardiología, endocrinología, nefrología y neumología. Se realizaron búsquedas en Pubmed con y sin filtros de calidad de Clinical Queries en diagnóstico y tratamiento, búsqueda por idiomas y por década de publicación. Resultados: se realizaron 520 búsquedas en Pubmed. Se encontraron 498 952 publicaciones en diagnóstico y tratamiento; el 16% son estudios con características de calidad; en cardiología 23%, neumología 13%, endocrinología 13% y nefrología 6.5%. El 98% de estudios están publicados en inglés, mientras que sólo 2% está distribuido proporcionalmente en español y francés. En la década del 2000 aumentó 2.4 veces el número de estudios con filtros de calidad, comparado con la década de 1990. Conclusiones: existe un alto número de estudios publicados en medicina interna; cardiología y endocrinología representan la mayoría; cardiología tiene la mayor proporción de estudios con características de calidad, neumología y endocrinología tienen una proporción similar. En inglés se encuentran la mayoría de publicaciones con filtros de calidad, comparado con español y francés. (Acta Med Colomb 2015; 40: 194-201). Introduction: medical literature users have acces to many published studies with variable methodological quality for several reasons. A description of the characteristics of publications retrieved from cardiology, endocrinology, nephrology and pneumology, through PubMed, including quality characteristics by PubMed Clinical Queries filters, language and decade of publication was carried out. Methodology: a descriptive study. Ten MeSH (Medical Subject Headings) Medline terms representative of cardiology, endocrinology, nephrology and pneumology were selected. PubMed searches were performed with and without quality filters of Clinical Queries in diagnosis and treatment, search by language and by decade of publication. Results: 520 searches were conducted in PubMed. 498 952 publications were found in diagnosis and treatment; 16% are studies with quality features; 23% in cardiology, 13% pneumology, 13% endocrinology and 6.5% nephrology. 98% of studies are published in English, while only 2% is distributed proportionally in Spanish and French. In the decade of 2000 the number of studies with quality filters increased 2.4 times, compared with the 1990s. Conclusions: there are a large number of studies published in Internal medicine; cardiology and endocrinology account for the majority; cardiology has the highest proportion of studies with qualityfeatures; pneumology, and endocrinology have a similar proportion. The majority of publications with quality filters are in English, compared with Spanish and French. (Acta Med Colomb 2015; 40: 194-201).

Background: The relationship between helminthiases and allergy is a matter of considerable interest and research. In the tropics, house dust mite exposure, a known risk factor for asthma, is frequently concurrent with helminth infections. It remains to be defined whether infection with the common roundworm Ascaris or its bystander immunological effects influence the prevalence and pathogenesis of asthma independently of mite sensitization. Objective: To investigate the relationship between the IgE responses to Ascaris and its purified allergens and the risk of asthma in a tropical country. Methods: A nested case-control study was performed in 356 subjects who reported current and past asthma symptoms (asthmatics) and 435 controls that had never experienced such symptoms. They were tested for serum levels of total IgE and specific IgE to Ascaris extract, Asc s 1 (ABA-1), Asc l 3 (tropomyosin) and GST (glutathione transferase). In addition, specific IgE to Dermatophagoides pteronyssinus, Blomia tropicalis and their tropomyosins Der p 10 and Blo t 10 was measured. Sensitization was defined as a positive specific IgE result to any extract or recombinant allergen. Results: Sensitization to Ascaris and D. pteronyssinus was independently associated with asthma after adjustment for age, gender, socio-economic stratum, city and other IgE levels (adjusted ORs: 2.17; 95% CI 1.37-3.42 and 2.46; 95% CI 1.54-3.92), respectively. There was also a significant association with sensitization to the highly allergenic and cross-reactive tropomyosins Asc l 3, Blo t 10 and Der p10 (aORs: 1.76; 95% CI 1.21-2.57, 1.64; 95% CI 1.14-2.35 and 1.51; 95% CI 1.02-2.24), respectively. Conclusion and Clinical Relevance: IgE responses to Ascaris are associated with asthma symptoms in a population living in the tropics. Sensitization to the cross-reactive Ascaris and mite tropomyosins partially underlies this finding. These results have potential relevance in asthma diagnosis and management. © 2015 John Wiley and Sons Ltd.

For patients admitted to intensive care units (ICU), the length of stay in different destinations after the first day of ICU admission, has not been systematically studied. We aimed to estimate the average length of stay (LOS) of such patients in Colombia, using a discrete time Markov process. We used the maximum likelihood method and Markov chain modeling to estimate the average LOS in the ICU and at each destination after discharge from intensive care. Six Markov models were estimated, describing the LOS in each one of the Cardiovascular, Neurological, Respiratory, Gastrointestinal, Trauma and Other diagnostic groups from the ultimate primary reason for admission to ICU. Possible destinations were: the intensive care unit, ward in the same hospital, the high dependency unit/intermediate care area in the same hospital, ward in other hospital, intensive care unit in other hospital, other hospital, other location same hospital, discharge from same hospital and death. The stationary property was tested and using a split-sample analysis, we provide indirect evidence about the appropriateness of the Markov property. It is not possible to use a unique Markov chain model for each diagnostic group. The length of stay varies across the ultimate primary reason for admission to intensive care. Although our Markov models shown to be predictive, the fact that current available statistical methods do not allow us to verify the Markov property test is a limitation. Clinicians may be able to provide information about the hospital LOS by diagnostic groups for different hospital destinations.

A cohort of intensive care unit (ICU) patients in 20 Colombian ICUs is used to describe the application of three imputation techniques: single, hot deck and multiple imputation. These strategies were used to impute the missing data in the variables used to construct APACHE II scores, a scoring system for the ICU patients that provides an unbiased standardized estimate of the probability of hospital death. Imputed APACHE II scores were then used in the APACHE II model to estimate adjusted hospital mortality rates. The area under the receiver operating characteristic (ROC) curve was used to compare imputation strategies with respect to predictive power. While statistically significant differences were found for the area under the ROC curve, these differences were not clinically significant.

Objetivos Describir las caracteristicas demograficas, las causas de ingreso y los factores asociados con la mortalidad hospitalaria en pacientes admitidos en cuidados intensivos en Colombia Material y Metodo Cohorte de pacientes en una muestra de unidades de cuidados intensivos (UCI). De 89 UCI identificadas, 20 unidades en 10 ciudades de Colombia fueron invitadas a recolectar informacion sobre 200 pacientes consecutivos ingresados en cada unidad Resultados Estuvieron disponibles para ser analizados 3.066 pacientes. El promedio de edad fue de 53 anos, el 43% eran mujeres (p Conclusion La causa mas frecuente de ingreso en cuidados intensivos en Colombia fue el infarto miocardico. Ademas de la gravedad de la enfermedad, existen en Colombia otras variables dependientes de la atencion medica que se asocian con mortalidad, como la ventilacion mecanica invasiva. Aunque podrian ser marcadores residuales de gravedad de la enfermedad, mas probablemente estan asociadas con la calidad de la atencion brindada