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ABSTRACT Introduction: Spondyloarthritis is a group of chronic inflammatory diseases. Several factors of the disease remain unknown, including clinical and radiological behavior, the demographic characteristics and burden of disease in Colombian patients. Objective: To characterize the demographic aspects, the clinical and paraclinical behaviour, and the therapeutic requirements of a cohort of patients with spondyloarthritis followed-up in the Hospital Pablo Tobón Uribe from January 1, 2005 to December 31, 2017. Methodology: Cohort study. The population was characteriszed using descriptive statistics, qualitative variables using simple and relative frequencies, and quantitative variables using means and standard deviation or medians with their interquartile ranges. Results: The cohort consisted of 181 patients, 100 men (54.9%) and 81 women (44.5%). Just under one half (45.1%) had ankylosing spondylitis, 18.1% undifferentiated spondyloarthritis, 17.1% psoriatic arthropathy, 14.8% reactive arthritis, and 4.4% inflammatory bowel disease. More than two-thirds (69.8%) of the patients had peripheral manifestations, and 67% had axial. A positive HLAB27 was observed in 55.6% of patients. The MRI showed acute and chronic changes in the sacroiliac in 69% and 37%, respectively, with radiological sacroiliitis being observed in 59.5% of cases. The large majority (91.1%) of the patients were treated with PII of original article: S0121-8123(21)00018-9 NSAIDs, 60.1% with sulfasalazine, 43.4% with COX2 inhibitors, and 33.7% with methotrexate. TNFa inhibitors were required by 56.6% of the subjects 3 years after the onset of symptoms. The most commonly used biological drugs were Adalimumab (31.1%), etanercept (21.7%), infliximab (13.1%), golimumab 6.1%, and certolizumab 0.5%. Conclusions: Ourpopulation was characterized by a high activity and functional compromise demonstrated by the high scores of BASDAI and BASFI, and because 56.6% of the patients required anti-TNFa agents.

RESUMEN Introducción: Las espondiloartritis son un grupo de enfermedades inflamatorias crónicas. Se desconoce su comportamiento en nuestro medio, al igual que el comportamiento clínico y radiológico, las características demográficas y la carga de enfermedad en los pacientes colombianos. Objetivos: Caracterizar los aspectos demográficos, el comportamiento clínico y paraclínico y los requerimientos terapéuticos de la cohorte de pacientes con espondiloartritis seguidos en el Hospital Pablo Tobón Uribe desde el 1.° de enero del 2005 hasta el día 31 de diciembre del 2017. Metodología: Estudio de cohorte. La población se caracterizó mediante estadística descrip tiva, las variables cualitativas mediante frecuencias simples y relativas, en tanto que para las cuantitativas se emplearon medias y desviación estándar o medianas con sus rangos intercuartílicos. Resultados: La cohorte está constituida por 181 pacientes, 100 hombres (54,9%) y 81 mujeres (44,5%). El 45,1% tenía espondilitis anquilosante, el 18,1% espondiloartritis indiferenciada, el 17,1% artropatía psoriásica, el 14,8% artritis reactiva y el 4,4% enfermedad inflamatoria intestinal. El 69,8% de los pacientes tenía manifestaciones periféricas y el 67% axiales. El 55,6% de los pacientes tuvo HLAB27 positivo. La RMN mostró cambios agudos y crónicos en las sacroilíacas en el 69% y 37%, respectivamente; en el 59,5% de los casos se observó sacroileítis radiológica. el 91,1% de los pacientes se trató con AINE, el 60,1% con sulfasa lazina, el 43,4% con inhibidores COX2 y el 33,7% con metotrexato. El 56,6% de los sujetos requirió inhibidores-TNFa 3 arios después del inicio de los síntomas. Los biológicos más uti lizados fueron adalimumab (31,1%), etanercept (21,7%), infliximab (13,1%), golumimab (6,1%) y certolizumab (0,5%). Conclusiones: Nuestra población se caracterizó por una alta actividad y gran compromiso funcional, lo que se refleja en altos puntajes de Basdai y Basfi y en que el 56,6% de los pacientes requirió agentes anti-TNFa.

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RESUMEN Introducción: El uso de TNFi es cada vez más frecuente en los pacientes con espondiloartritis. Identificar tempranamente aquellos que los requerirán o poder predecir su uso puede ayudar a hacer un tratamiento más efectivo y oportuno racionalizando su uso. Objetivo: Determinar los factores qué mejor explican la indicación de TNFi en la población en estudio. Material y métodos: La asociación entre el uso de medicamentos anti-TNFα y las variables categóricas demográficas, clínicas, de laboratorio, radiológicas y de tratamiento se exploró por prueba exacta de Fisher. La asociación con las variables cuantitativas fue evaluada con t de Student o U de Mann Withney, de acuerdo con su distribución. Aquellas variables con p < 0,25 fueron ingresadas a modelos univariante de regresión logística explicativa para construir los OR crudos; aquellas con p < 0,25 se incluyeron en el modelo multivariante para construir OR ajustados. Resultados y discusión: La población está constituida por 181 pacientes. Modelo univariante: la artritis reactiva, uretritis y compromiso periférico fueron factores protectores para el uso de TNFi. Espondiloartritis axial, lumbalgia inflamatoria, dolor glúteo alternante, rigidez matinal sacroilitis demostrada por cualquier método, tratamiento con inhibidores COX-2, tiempo de evolución de tres arios o más y los puntajes de BASDAI y BASFI se asociaron con el uso de TNFi. Modelo multivariante: artritis reactiva (OR 0,1, IC 95% 0,012-0,86, p = 0,036), lumbalgia inflamatoria (OR 13,63, IC 95% 1,36-136, p = 0,026), sacroilitis (OR 7,71, IC 95% 1,04-57, p = 0,045, uso de coxib (OR 10,1, IC 95% 2,71-37,62, p = 0,001) y el puntaje máximo de BASDAI (4-6: OR 6,1, IC 95% 1,3-28,7, p = 0,022, mayor de 6: OR 15,8, IC 95% 2,2-113, p = 0,006) se asociaron independientemente con el uso de TNFi. El uso de coxib se asoció con la indicación de usar TNFi tanto en los pacientes con espondiloartritis axial (OR 4,2, IC 95% 1,74-10,11, p = 0,001) como periférica (OR 4, IC 95% 1,85-8,62, p < 0,001). Conclusiones: El inicio de la enfermedad en la forma de artritis reactiva se comportó como un factor protector para la necesidad posterior de usar TNFi, mientras que presentar lumbalgia inflamatoria, sacroilitis demostrada por cualquier método, el tratamiento con coxib y el puntaje máximo de BASDAI mayor de 4 se asociaron con el uso de estos medicamentos.

ABSTRACT Introduction: The use of tumor necrosis factor (TNF) alpha inhibitors is increasing in patients with spondyloarthritis. Early identification of those that would require them, or the ability to predict their use, could lead to a more effective and timely treatment by rationalizing their use. Objective: To determine factors that better explain the indication of TNFi in the study population. Material and methods: The association between anti-TNFα use and categorical demographic, clinical, laboratory, radiological and treatment variables was explored using Pearson's Chi2 or Fisher's exact test. The association with the quantitative variables was evaluated using Student's t test or Mann Whitney U test, depending on their distribution. Those variables with P < 0.25 were entered into univariate models of explanatory logistic regression to cons truct crude ORs, and those with P < 0.25 were included in the multivariate model to construct adjusted ORs. Results and discussion: The study population includes 181 patients. In the univariate model: reactive arthritis, urethritis, and peripheral involvement were protective factors for the use of TNFi. Axial spondyloarthritis, inflammatory lumbalgia, alternating gluteal pain, morning stiffness, sacroiliitis demonstrated by any method, treatment with COX-2 inhibitors, evolu tion time of three years or more, and BASDAI and BASFI scores were associated with the use of TNFi. Multivariate model: reactive arthritis (P = 0.036), inflammatory back pain (P = 0.026), sacroiliitis (P = 0.045), use of coxibs (P = 0.001) and the maximum score of BASDAI (P = 0.022, P = 0.006) were independently associated with the use of TNFi. The use of coxibs was associa ted with the indication of using TNFi in both patients with axial spondyloarthritis (P = 0.001) and peripheral (P < 0.001). Conclusions: The onset of the disease in the form of reactive arthritis behaved as a protective factor for the subsequent need to use TNFi, while presenting with inflammatory back pain, sacroiliitis, demonstrated by any method, treatment with coxibs, and the maximum score of BASDAI greater than 4 associated with the use of these medications.

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OBJECTIVE: Describe the clinical and epidemiologic characteristics of patients with systemic lupus erythematosus (SLE) admitted to the intensive care unit (ICU). METHODS: a retrospective study with medical records review of patients with systemic lupus erythematosus (SLE) admitted to the ICU between 2004 and 2015 were included. Qualitative variables were described using absolute and relative frequencies. For quantitative variables mean value and standard deviation (SD) or median value with the interquartile range (IQR) depending on data distribution. To compare groups, it was used the Student t-test or Mann Whitney U test as appropriate and Fisher's exact test. RESULTS: 33 patients were included, with a total of 45 ICU admissions, 29 (87.9%) were females with a median age of 26 years. The median time of diagnosis of SLE was two years, (IQR 1.5-5). The most common SLE manifestation and comorbidity were renal disease and hypertension with 27 (81.8%) and 14 (42.4%) respectively. The main reason for admittance was lupus flare with 25 events (55.5%). Infection was the second cause of admission with 19 events (42.2%). The median stay time in the ICU was four days (IQR 2-7). LODS score was 6 (RIQ 5-8), and APACHE II score was 13 (RIQ 11-17.7). There were 29 infections (64.5%) of which 20 (69%) were hospital-acquired. Four (12.1%) patients died. CONCLUSION: Unlike most of the previously reported series, in this study SLE activity was the most common cause of admission in the ICU. A more aggressive disease and difficulties in the ambulatory setting could explain this behavior. Despite the higher percentage of lupus flares, there was lower mortality.

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Dengue infection has been associated with multiple renal complications, including glomerulonephritis, acute tubular necrosis, tubulointerstitial nephritis, and thrombotic microangiopathy (TMA), this last one being a rare complication of dengue, with only a few reported cases. TMA associated with dengue can be explained by an alteration in the activity of the enzyme ADAMTS13, leading to thrombotic thrombocytopenic purpura; or it can be secondary to direct or indirect endothelial injury by the virus, which leads to hemolytic uremic syndrome. Here, we present a case of severe TMA, not related to ADAMTS13, which was clearly associated with dengue infection.

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BACKGROUND: Antiretroviral therapy (ART) has modified the natural history of HIV-infection: the incidence of opportunistic infections (OIs) has decreased and mortality associated to HIV has improved dramatically. The reasons for hospitalization have changed; OIs are no longer the most common reason for admission. This study describes the patient population, admission diagnosis and hospital course of HIV patients in Colombia in the ART era. METHODS: Patients admitted with HIV/AIDS at six hospitals in Medellin, Colombia between August 1, 2014 and July 31, 2015 were included. Demographic, laboratory, and clinical data were prospectively collected. RESULTS: 551 HIV-infected patients were admitted: 76.0% were male, the median age was 37 (30-49). A new diagnosis of HIV was made in 22.0% of patients during the index admission. 56.0% of patients of the entire cohort had been diagnosed with HIV for more than 1 year and 68.9% were diagnosed in an advanced stage of the disease. More than 50.0% of patients had CD4 counts less than 200 CD4 cells/µL and viral loads greater than 100,000 copies. The main reasons for hospital admissions were OIs, tuberculosis, esophageal candidiasis and Toxoplasma encephalitis. The median hospital stay was 14 days (IQR 8-23). Admission to the intensive care unit (ICU) was required in 10.3% of patients and 14.3% were readmitted to the hospital; mortality was 5.4%. CONCLUSIONS: Similar to other countries in the developing world, in Colombia, the leading cause of hospitalization among HIV-infected patients remain opportunistic infections. However, in-hospital mortality was low, similar to those described for high-income countries. Strategies to monitor and optimize the adherence and retention in HIV programs are fundamental to maximize the benefit of ART.

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RESUMEN Introducción: la esclerosis sistémica es una enfermedad autoinmune crónica, caracterizada por la tríada de vasculopatía de pequeños vasos, activación del sistema inmune y aumento de los depósitos de matriz extracelular tanto en la piel como en los órganos internos. En los últimos años, el compromiso pulmonar ha cobrado gran importancia, pasando a ser la primera causa de muerte, dada la disminución de la mortalidad por crisis renales con el advenimiento de los inhibidores de la enzima convertidora de angiotensina. La afección pulmonar puede ocurrir como hipertensión o enfermedad intersticial difusa; esta última es más común en pacientes con la variedad generalizada, en los primeros tres años de la enfermedad. Tiene mal pronóstico si no se inicia el tratamiento, cuya meta es detener el deterioro de la función pulmonar. Entre los tratamientos disponibles, la ciclofosfamida cuenta con la mejor evidencia, pero se están estudiando, con resultados preliminares satisfactorios, otros tratamientos como micofenolato mofetil, rituximab, trasplante autólogo de células hematopoyéticas y trasplante de pulmón. Objetivo: describir, de acuerdo con lo reportado en la literatura, la epidemiología, la fisiopatología, los métodos diagnósticos y el tratamiento de la enfermedad pulmonar intersticial en pacientes con esclerosis sistémica. Métodos: revisión estructurada, no sistemática de la literatura, enfocada en los aspectos de interés, mencionados y que incluyó 52 artículos.

SUMMARY Introduction: Systemic sclerosis is a chronic autoimmune disease, characterized by the triad of small vessel vasculopathy, immune system activation and increased deposits of extracellular matrix in the skin and internal organs. In the last few years, pulmonary involvement has gained relevance since the introduction of angiotensin enzyme converter inhibitors with the subsequent decline in scleroderma renal crisis mortality, transforming scleroderma lung disease in the leading cause of mortality. Pulmonary involvement can manifest as hypertension or interstitial lung disease, which usually occurs in patients with generalized scleroderma in the first three years of the disease. Its prognosis is poor without treatment which is aimed at stopping pulmonary function deterioration. Among treatment options, cyclophosphamide has the best evidence, and mycophenolate mofetil, rituximab, and stem cell and lung transplantation are currently under investigation with positive preliminary results. Objective: To describe, according to reports in the literature, epidemiology, pathophysiology, diagnostic methods, and treatment of interstitial lung disease in systemic sclerosis. Methods: Structured, non-systematic literature review, focused on the aforementioned aspects of interest. It included 52 articles.

RESUMO Introdução: a esclerose sistémica é uma doença autoimune crônica, caracterizada pela tríada de vasculopatia de pequenos vasos, ativação do sistema imune e aumento dos depósitos de matriz extracelular tanto na pele como nos órgãos internos. Nos últimos anos, o compromisso pulmonar há cobrado grande importância, passando a ser a primeira causa de morte, dada a diminuição da mortalidade por crises renais com o advento dos inibidores da enzima convertedora de angiotensina. A afecção pulmonar pode ocorrer como hipertensão ou doença intersticial difusa; esta última é mais comum em pacientes com a variedade generalizada, nos primeiros três anos da doença. Tem mal prognóstico se não se inicia o tratamento, cuja meta é deter o deterioro da função pulmonar. Entre os tratamentos disponíveis, a ciclofosfamida conta com a melhor evidência, mas se está estudando, com resultados preliminares satisfatórios, outros tratamentos como micofenolato mofetil, rituximab, transplante autólogo de células hematopoiéticas e transplante de pulmão. Objetivo: Descrever, de acordo com o reportado na literatura, a epidemiologia, a fisiopatologia, os métodos diagnósticos e o tratamento da doença pulmonar intersticial em pacientes com esclerose sistémica. Métodos: revisão estruturada, não sistemática da literatura, enfocada nos aspectos de interesse, mencionados e que incluiu 52 artigos.

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