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Resumen Introducción: Los escarabajos coprófagos cumplen funciones importantes en los ecosistemas terrestres, pero las presiones antrópicas los afectan negativamente. Estos efectos están bien documentados en los bosques neotropicales de tierras bajas, pero se han estudiado poco en los bosques andinos. Objetivo: Evaluar cómo los atributos de los ensambles de escarabajos coprófagos y tres de sus funciones ecológicas difieren en tres tipos de cobertura vegetal, y determinar las relaciones entre atributos y funciones, y entre funciones. Métodos: Los escarabajos coprófagos se capturaron con trampas pitfall y se midieron las funciones ecológicas a través de un experimento de campo en la hacienda "El Ocaso" (Colombia), en tres tipos de cobertura vegetal: bosque secundario, bosque mixto y pastos para ganado (tres sitios independientes por cobertura). Los atributos del ensamble que se evaluaron fueron: abundancia, número de especies, biomasa y longitud corporal media ponderada; las funciones medidas fueron: remoción de estiércol, excavación del suelo y dispersión secundaria de semillas. Resultados: Se encontró que tanto los atributos del ensamble como las funciones ecológicas se vieron afectados negativamente en las coberturas vegetales más alteradas, particularmente en los pastos ganaderos. La mayoría de los atributos de ensamblaje se correlacionaron positivamente con las funciones; la excavación del suelo y la dispersión secundaria de semillas tuvieron una fuerte correlación positiva con la remoción de estiércol. Conclusiones: Los ensambles de escarabajos coprófagos juegan importantes funciones ecológicas y son sensibles a las alteraciones del ecosistema. Este estudio muestra cómo los escarabajos coprófagos y sus funciones se ven afectados negativamente cuando el bosque se transforma en pastizales para ganado en los ecosistemas forestales andinos poco estudiados y altamente fragmentados.
Abstract Introduction: Dung beetles perform important functions in terrestrial ecosystems, but anthropic pressures affect them negatively. These effects are well documented in neotropical lowland forests but have been studied little in Andean forests. Objective: To evaluate how the attributes of the dung beetle assemblages and three of their ecological functions differ in three types of vegetation cover, and to determine the relationships between attributes and functions, and among functions. Methods: Dung beetles were captured with pitfall traps, and ecological functions were measured through a field experiment in the farm "El Ocaso" (Colombia), in three types of vegetation cover: secondary forest, mixed forest and cattle pasture (three independent sites per cover). The assemblage attributes that were evaluated were abundance, number of species, biomass, and weighted mean body length; functions measured were dung removal, soil excavation, and secondary seed dispersal. Results: It was found that both the assemblage attributes and the ecological functions were negatively affected in the more disturbed vegetation covers, particularly in cattle pastures. Most of the assemblage attributes correlated positively with functions; soil excavation and secondary seed dispersal had a strong positive correlation with dung removal. Conclusions: Dung beetle assemblages play important ecological functions and they are sensitive to ecosystem disturbances. This study shows how dung beetles and their functions are affected negatively when forest is transformed to cattle pasture in the understudied and highly fragmented Andean forest ecosystems.
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Animais , Besouros , Esterco , Colômbia , BiotaRESUMO
Limited information is available on outcomes of haploidentical stem cell transplantation (haploSCT) with posttransplant cyclophosphamide using myeloablative conditioning regimens in children and adolescents. We report the results of a single-institution retrospective study of myeloablative haploSCT in 36 children and adolescents (median age, 8 y; range, 9 mo to 22 y) with high-risk hematologic malignancies. Donor engraftment occurred in 31 of 33 evaluable patients (94%). Recovery of neutrophils and platelets occurred at a median of 15 and 20 days. Cumulative incidence of acute graft-versus-host-disease (GVHD) grades II to IV and grades III to IV at 100 days was 36±8.7% and 10±5.4% and of chronic GVHD at 1 year was 55±9.2%, with 31±8.6% moderate to severe. Nonrelapse mortality was 16±6.1% and 22±6.9% at 100 days and 1 year. The cumulative incidence of relapse at 4 years was 32±8.8%. With a median follow-up of 57 months (range, 8 to 89 mo), the overall survival and event-free survival at 4 years was 55.6±8.7% and 44.8±8.5%. Myeloablative conditioning T-replete haploSCT with posttransplant cyclophosphamide is a viable alternative to matched unrelated transplantation for children and adolescents with high-risk hematologic malignancies. The high rates of nonrelapse mortality and chronic GVHD is a concern and deserves careful consideration.
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Doença Enxerto-Hospedeiro , Neoplasias Hematológicas , Transplante de Células-Tronco Hematopoéticas , Adolescente , Criança , Ciclofosfamida/uso terapêutico , Doença Enxerto-Hospedeiro/etiologia , Doença Enxerto-Hospedeiro/prevenção & controle , Neoplasias Hematológicas/complicações , Transplante de Células-Tronco Hematopoéticas/métodos , Humanos , Recidiva Local de Neoplasia , Estudos Retrospectivos , Condicionamento Pré-Transplante/métodosRESUMO
La contaminación por plásticos petroquímicos es una grave amenaza para el medio ambiente que requiere im-plementar alternativas como los bioplásticos para lograr un desarrollo sostenible. Los polihidroxialcanoatos (PHA) son polímeros utilizados para la producción de plásticos biodegradables y que han llamado la atención como sustitutos de los plásticos de base fósil. Sin embargo, el costo de producción de los PHA constituye una barrera para su producción industrial a gran escala. Las de bacterias de hábitats salinos son microorganismos prometedores para la síntesis de PHA debido a sus características tales como altos requisitos de salinidad que previenen la contaminación microbiana, la alta presión osmótica intracelular que permite una fácil lisis celular para purificar los PHA y la capacidad para usar un amplio espectro de sustratos. La presente investigación planteó determinar las cepas nativas de bacterias halófilas y halotolerantes de la Laguna de Ayarza capaces de producir PHA, establecer la capacidad que tienen de utilizar residuos agrícolas para la producción de PHA y determinar su eficiencia. Esto se logró a través de la inoculación de las cepas productoras de PHA en medios de fermentación con pulpa de café, cáscaras de plátanos y salvado de trigo lo que permitió determinar las cepas más eficientes. Se encontró que las bacterias productoras de PHA pertenecen a las especies: Alcaligenes faecalis, Bacillus idriensis, Bacillus megaterium, Exiguobacterium acetylicum, E. aurantiacum, Pseudomonas cuatrocienegasensis y Sta-phylococcus capitis y que las cepas AP21-14, AP21-10 y AP21-03 mostraron los mejores resultados que podrían ser prometedores para la producción a nivel industrial.
Pollution by petrochemical plastics is a serious threat to the environment that requires the implementation of al-ternatives such as bioplastics to achieve sustainable development. Polyhydroxyalkanoates (PHAs) are polymers used for the production of biodegradable plastics and have drawn attention as substitutes for fossil-based plastics. However, the cost of producing PHAs constitutes a barrier to their large-scale industrial production. Bacteria from saline environments bacteria are promising microorganisms for PHA synthesis due to their characteristics such as high salinity requirements that prevent microbial contamination, high intracellular osmotic pressure that allows easy cell lysis to purify PHAs, and the ability to use a broad spectrum of substrates. This research project aimed to determine the native strains of halophilic and halotolerant bacteria from Laguna de Ayarza capable of producing PHA, establish their ability to use agricultural residues for the production of PHA, and determine their efficiency. This was achieved through the inoculation of the PHA-producing strains in fermentation media with coffee pulp, banana peels and wheat bran, which allowed determining the most efficient strains. It was found that the PHA-producing bacteria belong to the species: Alcaligenes faecalis, Bacillus idriensis, Bacillus mega-terium, Exiguobacterium acetylicum, E. aurantiacum, Pseudomonas cuatrocienegasensis and Staphylococcus capitis and that the strains AP21-14, AP21-10 and AP21-03 showed the best results that could be promising for production at an industrial level.
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Humanos , Halomonas , Poli-Hidroxialcanoatos/análise , Plásticos Biodegradáveis/química , Pseudomonas/química , Bacillus megaterium/química , Laguna Costeira , Alcaligenes faecalis/química , Fermentação , Staphylococcus capitis , Exiguobacterium/química , Guatemala , Resíduos Industriais/efeitos adversosRESUMO
Resumen: Objetivo: describir la incidencia y supervivencia en niños y adolescentes con cáncer en Uruguay y analizar su evolución mediante la comparación de los períodos 1992-1994 y 2008-2012. Material y método: estudio observacional y descriptivo. Se incluyeron todos los pacientes entre 0 y 14 años diagnosticados de cáncer en todo el territorio uruguayo en el período 2008-2012. Fuente de datos: Registros del Servicio de Hematología y Oncología Pediátrica del Centro Hospitalario Pereira Rossell. Los diagnósticos fueron agrupados de acuerdo con la International Classification of Childhood Cancer, Third Edition. La información del tamaño de la población y de su distribución según la edad fue obtenida de registros de censos nacionales y de organismos internacionales. Se determinó incidencia y supervivencia. Se estableció el seguimiento de los sobrevivientes por un mínimo de seis años para asegurar una estimación precisa de la sobrevida. Resultados: se incluyeron 504 pacientes entre 0 y 14 años. La tasa de incidencia para todos los cánceres fue de 134,6 casos por millón por año, 147,6 y 120,7 para varones y niñas, respectivamente. La mayor incidencia fue observada para leucemias (grupo I) (40,6), tumores del sistema nervioso central (grupo III) (28,0) y linfomas (grupo II) (17,6). La tasa de sobrevida a cinco años mejoró significativamente para todos los cánceres de 54,7% (1992-1994) a 70,6% (2008-2012) (varones 49,2% a 69,6%; niñas 58,9% a 72,3%). Conclusiones: este estudio aporta información confiable de la incidencia y sobrevida del cáncer en Uruguay en pacientes menores de 15 años. Los resultados hallados demuestran cambios en la distribución de la población de Uruguay, una tasa de incidencia de cáncer estable en el grupo etario analizado y un progreso significativo en la supervivencia comparado con el estudio realizado hace 20 años, pero confirman que Uruguay tiene desafíos por delante para alcanzar tasas de cura del cáncer similares a los países de Europa Occidental y América del Norte.
Summary: Objectives: describe the incidence and survival of children and adolescents with cancer in Uruguay and analyze their evolution by comparing the periods 1992-1994 and 2008-2012. Materials and methods: descriptive and observational study. We included all patients between 0 and 14 years of age diagnosed with cancer in Uruguay during 2008-2012. Data source: Pereira Rossell Children's Hospital Records of the Pediatric Hematology and Oncology Department. The diagnoses were grouped according to the Third Edition of the Childhood Cancer's International Classification. Data regarding population size and distribution by age was obtained from national census records and from international organizations. We determined incidence and survival. Follow-up of survivors was established for a minimum of 6 years to ensure an accurate estimate of survival. Results: we included five hundred and four (504) patients between 0 and 14 years of age. The incidence rate for all cancers was 134.6 cases per million per year, 147.6 and 120.7 for boys and girls, respectively. The highest incidence was leukemia (group I) (40.6), tumors of the central nervous system (group III) (28.0) and lymphomas (group II) (17.6). The 5-year survival rate improved significantly for all cancers from 54.7% (1992-1994) to 70.6% (2008-2012) (males 49.2% to 69.6%; girls 58.9% to 72.3%). Conclusions: this study provides reliable information on the incidence and survival of cancer in Uruguay in patients under 15 years of age. The results found demonstrate changes in the distribution of the population of Uruguay, a stable cancer incidence rate in the age group analyzed and significant progress in survival compared to the study carried out 20 years ago, but confirm that Uruguay has challenges ahead in order to achieve cancer cure rates similar to those of Western European and North American countries.
Resumo: Objetivos: descrever a incidência e sobrevida em crianças e adolescentes com câncer no Uruguai e analisar sua evolução comparando os períodos 1992-1994 e 2008-2012. Materiais e métodos: estudo observacional e descritivo. Incluíram-se todos os pacientes de 0 a 14 anos de idade com diagnóstico de câncer em Uruguai no período 2008-2012. Fonte de dados: Prontuários do Serviço de Hematologia e Oncologia Pediátrica do Centro Hospitalar Pereira Rossell. Os diagnósticos foram agrupados de acordo com a Classificação Internacional de Câncer Infantil, Terceira Edição. As informações sobre o tamanho da população e sua distribuição por faixa etária foram obtidas nos registros censitários nacionais e em organismos internacionais. Determinaram-se a incidência e sobrevivência. Os sobreviventes foram acompanhados por um período mínimo de 6 anos para garantir uma estimativa precisa de sobrevida. Resultados: incluíram-se 504 pacientes entre 0 e 14 anos de idade. A taxa de incidência para todos os cânceres foi de 134,6 casos por milhão por ano, 147,6 e 120,7 para meninos e meninas, respectivamente. A maior incidência observou-se para leucemias (grupo I) (40,6), tumores do sistema nervoso central (grupo III) (28,0) e linfomas (grupo II) (17,6). A taxa de sobrevida em 5 anos melhorou significativamente para todos os cânceres de 54,7% (1992-1994) para 70,6% (2008-2012) (homens 49,2% a 69,6%; meninas 58,9% a 72,3%). Conclusões: este estudo fornece informação confiável sobre a incidência e sobrevida do câncer no Uruguai em pacientes com menos de 15 anos de idade. Os resultados encontrados mostram mudanças na distribuição da população uruguaia, taxa de incidência de câncer estável na faixa etária analisada e avanço significativo na sobrevida em relação ao estudo realizado há 20 anos, mas confirmam que o Uruguai tem desafios pela frente para atingir taxas de cura do câncer semelhantes aos países da Europa Ocidental e da América do Norte.
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We evaluated the outcome of 71 children with de novo acute myeloid leukemia enrolled in 2 consecutive protocols in the main pediatric hospital in Uruguay. In the LAM97 protocol (n=34), patients received, as consolidation, autologous or allogeneic hematopoietic stem cell transplantation (HSCT), depending on the availability or not of a matched sibling donor. In the LAM08 protocol (n=37), patients were stratified into risk groups, autologous HSCT was abandoned, and allogeneic HSCT was limited to intermediate-risk patients with matched sibling donor and to all patients who fulfilled the high-risk criteria. Complete remission was achieved in 91% and 92% of patients in LAM97 and LAM08, respectively. Deaths in complete remission were 9.6% and 17.6%, respectively. The incidence of relapse was significantly higher in LAM97, 35.4%, versus 12.5% in LAM08. The 5-year event-free survival and overall survival were 50.0% and 55.9% in LAM97 and 59.9% and 64.8% in LAM08. The 5-year overall survival rates in each of the risk groups were 85.7% and 100% for low risk, 50.0% and 61.2% for intermediate risk, and 42.9% and 50.0% for high risk in LAM97 and LAM08 protocols, respectively. Survival has improved over the last 2 decades, and results are comparable to those published in Europe and North America.
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Transplante de Células-Tronco Hematopoéticas/mortalidade , Transplante de Células-Tronco Hematopoéticas/métodos , Leucemia Mieloide Aguda/terapia , Doadores de Tecidos/provisão & distribuição , Criança , Pré-Escolar , Feminino , Seguimentos , Humanos , Lactente , Leucemia Mieloide Aguda/patologia , Masculino , Prognóstico , Indução de Remissão , Estudos Retrospectivos , Irmãos , Taxa de Sobrevida , Condicionamento Pré-Transplante , Transplante Autólogo , Transplante Homólogo , UruguaiRESUMO
INTRODUCCIÓN: Osteopetrosis Infantil Maligna (OIM) es un grave e inusual desorden genético debi do a una actividad osteoclástica anormal. OBJETIVO: Reportar lactante en quien se documentó una Osteopetrosis Infantil Maligna, revisando aspectos diagnósticos y terapéuticos más relevantes. CASO CLÍNICO: Reportamos un lactante de 10 meses de sexo masculino en quien se confirmó OIM tras presentar plaquetopenia y visceromegalias. En su historial destacó ser primer hijo de padres no consanguíneos, y entre sus hallazgos presentó hepatoesplenomegalia, plaquetopenia y anemia graves, compromiso sensorial visual y auditivo e infecciones a repetición. El diagnóstico fue confirmado mediante estudio genético, el cual identificó 2 mutaciones heterocigotas en el gen TCIRG1. Se rea lizó trasplante de precursores hematopoyéticos, sin haber presentado recuperación hematológica, falleciendo por enfermedad veno oclusiva. DISCUSIÓN: La OIM es una enfermedad inusual, grave y de inicio temprano, siendo necesario un elevado índice de sospecha ante hepatoesplenomegalia y falla medular. El diagnóstico temprano y el trasplante de precursores hematopoyéticos son las únicas intervenciones potencialmente curativas de esta entidad letal.
INTRODUCCIÓN: Malignant Infantile Osteopetrosis (MIOP) is a rare and severe genetic disorder due to abnormal osteoclast activity. OBJECTIVE: To report an infant who presented Malignant Infantile Osteopetrosis, reviewing the most relevant diagnostic and therapeutic aspects. CLINICAL CASE: A ten- month-old male infant with diagnosis of MIOP confirmed after presenting thrombocytopenia and visceromegaly. He was the first child of non-consanguineous parents, and among the findings, he presented severe hepatosplenomegaly, thrombocytopenia, and anemia; visual and hearing impairment, and repeated infections. The diagnosis was confirmed by genetic study, which identified two heterozygous mutations in the TCIRG1 gene. Hematopoietic stem cells were transplanted without hematological recovery. The patient died due to occlusive venous disease. DISCUSSION: MIOP is a rare, severe, and early-onset disease, with a high rate of suspicion necessary in the presence of hepatosplenomegaly and bone marrow failure. Early diagnosis and hematopoietic stem cells transplanta tion are the only potentially therapeutic interventions of this lethal entity.
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Humanos , Masculino , Lactente , Osteopetrose/diagnóstico , Transplante de Células-Tronco Hematopoéticas/métodos , ATPases Vacuolares Próton-Translocadoras/genética , Osteoporose/fisiopatologia , Osteoporose/genética , Evolução Fatal , MutaçãoRESUMO
La mamografía, como método de tamizaje, ha demostrado disminuir la mortalidad al detectar de manera temprana el cáncer de mama; sin embargo, en mamas muy densas se dificulta la detección, por lo que se han venido generando nuevos métodos de tamizaje y diagnóstico. La mamografía con contraste espectral (CESM) es uno de estos métodos que, con la utilización de medio de contraste, facilita la detección de lesiones sospechosas. Será tema de revisión de este artículo su técnica e historia, repasando su comparación con la mamografía convencional y con una serie de casos se expondrán sus indicaciones, ventajas y desventajas.
Mammography as a screening method has been shown to reduce mortality by early detection of breast cancer; however, in very dense breasts it is difficult to detect, so new methods of screening and diagnosis have been devised. Contrast enhanced spectral contrast mammography (CESM) is one of these methods that, with the use of contrast medium, facilitates the detection of suspicious lesions. We will briefly discuss the CESM technique and history, review its comparison with conventional mammography, and with a series of cases we will discuss its indications, advantages and disadvantages.
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Humanos , Mamografia , Neoplasias da Mama , Meios de ContrasteRESUMO
Luteoma of pregnancy is an infrequent non-neoplastic pathology of the ovary. It is usually an incidental finding during the evaluation of a pregnant patient in the third trimester or during a cesarean section. Occasionally, it may raise suspicion of cancer, resulting in unnecessary surgical resection of the ovary. We present the case of a 34-year-old woman who was in her third pregnancy and during the cesarean section, a 9 cm tumor of the right ovary was incidentally found and resected. The histological study was compatible with luteoma of pregnancy.
El luteoma del embarazo es una patología no neoplásica del ovario, de incidencia poco frecuente. Suele presentarse como hallazgo incidental durante la evaluación de una paciente embarazada en el tercer trimestre o en el momento del acto quirúrgico de una cesárea. En ocasiones, puede llevar a sospechar una neoplasia maligna, derivando así en una resección quirúrgica innecesaria del ovario. Presentamos el caso de una mujer de 34 años que cursaba su tercera gestación y a quien, durante la cesárea, se le halló una tumoración ovárica derecha de 9 cm de diámetro que fue resecada. El estudio histológico fue compatible con luteoma del embarazo.
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Humanos , Feminino , Gravidez , Adulto , Neoplasias Ovarianas/patologia , Complicações Neoplásicas na Gravidez/patologia , Luteoma/patologia , Neoplasias Ovarianas/diagnóstico , Complicações Neoplásicas na Gravidez/diagnóstico , Cesárea , Luteoma/diagnóstico , Achados IncidentaisRESUMO
Introdução: Embora realizada há muito tempo, a remoção da bola de Bichat ganhou notoriedade nos últimos anos devido a sua grande procura nos consultórios do cirurgião plástico. Mesmo quando adequadamente indicada, ainda é considerada um procedimento controverso, uma vez que ainda não existe uma técnica cirúrgica sistematizada na literatura atual, visando torná-la segura e reprodutível. Métodos: A técnica da bichectomia intraoral descrita no trabalho foi aplicada de maneira sistemática em uma série de 27 pacientes consecutivos, no período de 5 de janeiro de 2016 a 15 de dezembro de 2016. Resultados: A idade média dos pacientes foi de 32 anos, sendo 15% do sexo masculino e 85% do sexo feminino. A bichectomia foi realizada isoladamente em 6 pacientes (22%) e em conjunto com outros procedimentos em 21 pacientes (78%). O procedimento mais comumente associado foi a lipoaspiração cervical, realizada em 55% dos pacientes. A imensa maioria dos casos foram operados com anestesia geral (93%). Nenhuma complicação permanente e importante foi verificada no pósoperatório, apenas um caso de neuropatia transitória do ramo bucal e um caso de edema mais pronunciado, que prontamente se resolveram nas semanas seguintes. Conclusão: A remoção de gordura bucal pode ser realizada de forma previsível, rápida e segura, proporcionando diminuição volumétrica do terço inferior facial, com maior realce dos contornos faciais. Quando aplicada em um ambiente cirúrgico seguro, seguindo todos os padrões de segurança da cirurgia e respeitando os complexos limites anatômicos da região, nossa técnica levará os cirurgiões e pacientes a um resultado seguro e satisfatório.
Introduction: Despite buccal fat removal having been performed for a long time, its popularity has increased only in recent years, leading to a rise in the demand for bichectomy in plastic surgery clinics. Buccal fat pad removal is still considered controversial, even when properly indicated, especially with the lack of a systematized surgical technique to make it safe and reproducible. Methods: The intraoral bichectomy described herein was systematically applied in 27 consecutive patients from January 5, 2016 to December 15, 2016. Results: The mean patient age was 32 years; 15% were men, and 85% were women. Isolated buccal fat pad removal was performed in six patients (22%) and in combination with other procedures in 21 patients (78%). The main procedure combined was neck liposuction (55%), and most patients were operated under general anesthesia (93%). No permanent or significant complications occurred, and there were only two minor complications, i.e., inferior mandibular neuropathy and significant swelling, which improved without treatment during the following weeks. Conclusions: Buccal fat removal can be performed in a predictable, fast, and safe manner, leading to volumetric reduction of the lower third of the face, enhancing facial shape. When applied in a safe surgical environment, following all surgical security standards and considering the complex anatomical boundaries of the cheek, our technique can yield secure and satisfactory outcomes both for surgeons and patients.
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Humanos , Masculino , Feminino , Adulto , História do Século XXI , Lipectomia , Bochecha , Procedimentos de Cirurgia Plástica , Anatomia Regional , Lipectomia/métodos , Bochecha/anatomia & histologia , Bochecha/anormalidades , Bochecha/cirurgia , Procedimentos de Cirurgia Plástica/métodos , Anatomia Regional/instrumentação , Anatomia Regional/métodosRESUMO
OBJECTIVE To analyze the impact of the International Nosocomial Infection Control Consortium (INICC) Multidimensional Approach (IMA) and the INICC Surveillance Online System (ISOS) on central line-associated bloodstream infection (CLABSI) rates in 14 intensive care units (ICUs) in Argentina from January 2014 to April 2017. DESIGN This prospective, pre-post surveillance study of 3,940 ICU patients was conducted in 11 hospitals in 5 cities in Argentina. During our baseline evaluation, we performed outcome and process surveillance of CLABSI applying Centers for Disease Control and Prevention/National Health Safety Network (CDC/NHSN) definitions. During the intervention, we implemented the IMA through ISOS: (1) a bundle of infection prevention practice interventions, (2) education, (3) outcome surveillance, (4) process surveillance, (5) feedback on CLABSI rates and consequences, and (6) performance feedback of process surveillance. Bivariate and multivariate regression analyses were performed using a logistic regression model to estimate the effect of the intervention on the CLABSI rate. RESULTS During the baseline period, 5,118 CL days and 49 CLABSIs were recorded, for a rate of 9.6 CLABSIs per 1,000 central-line (CL) days. During the intervention, 15,659 CL days and 68 CLABSIs were recorded, for a rate of 4.1 CLABSIs per 1,000 CL days. The CLABSI rate was reduced by 57% (incidence density rate: 0.43; 95% confidence interval, 0.34-0.6; P<.001). CONCLUSIONS Implementing IMA through ISOS was associated with a significant reduction in the CLABSI rate in ICUs in Argentina. Infect Control Hosp Epidemiol 2018;39:445-451.