Hospital volume, postoperative mortality, and costs after gastrectomy for gastric cancer in colombia: is there any association? / Volume hospitalar, mortalidade pós-operatória e custos após gastrectomia por câncer gástrico na colômbia: existe associação?

ABSTRACT BACKGROUND: There are no information in the literature associating the volume of gastrectomies with survival and costs for the health system in the treatment of patients with gastric cancer in Colombia. AIMS: The aim of this study was to analyze how gastrectomy for gastric cancer is associated with hospital volume, 30-day and 180-day postoperative mortality, and healthcare costs in Bogotá, Colombia. METHODS: A retrospective cohort study based on hospital data of all adult patients with gastric cancer who underwent gastrectomy between 2014 and 2016 using a paired propensity score. The surgical volume was identified as the average annual number of gastrectomies performed by the hospital. RESULTS: A total of 743 patients were included in the study. Hospital mortality at 30 and 180 days postoperatively was 36 (4.85%) and 127 (17.09%) patients, respectively. The average health care cost was USD 3,200. A total of 26 or more surgeries were determined to be the high surgical volume cutoff. Patients operated on in hospitals with a high surgical volume had lower 6-month mortality (HR 0.44; 95%CI 0.27-0.71; p=0.001), and no differences were found in health costs (mean difference 398.38; 95%CI-418.93-1,215.69; p=0.339). CONCLUSIONS: This study concluded that in Bogotá (Colombia), surgery in a high-volume hospital is associated with better 6-month survival and no additional costs to the health system.

RESUMO RACIONAL: Não há informações na literatura relacionando o volume de gastrectomias bem como a sobrevida e os custos para o sistema de saúde, no tratamento de pacientes com câncer gástrico na Colômbia. OBJETIVOS: analisar como a gastrectomia para câncer gástrico está associada ao volume hospitalar, mortalidade pós-operatória de 30 e 180 dias e custos de saúde em Bogotá, Colômbia. MÉTODOS: Estudo de coorte retrospectivo baseado em dados hospitalares de todos os pacientes adultos com câncer gástrico submetidos à gastrectomia entre 2014 e 2016, utilizando um escore de propensão pareado. O volume cirúrgico foi identificado como o número médio anual de gastrectomias realizadas pelo hospital. RESULTADOS: Foram incluídos no estudo 743 pacientes. A mortalidade hospitalar aos 30 e 180 dias de pós-operatório, foram respectivamente, 36 (4,85%) e 127 (17,09%) pacientes. O custo médio de saúde foi de US$ 3.200. Vinte e seis ou mais cirurgias foram determinadas como ponto de corte de alto volume cirúrgico. Pacientes operados em hospitais de alto volume cirúrgico tiveram menor mortalidade em seis meses (HR 0,44; IC95% 0,27-0,71; p=0,001) e não foram encontradas diferenças nos custos com saúde (diferença média 398,38; IC95% −418,93-1215,69; p=0,339). CONCLUSÕES: Este estudo concluiu que em Bogotá (Colômbia), a cirurgia em um hospital com alto volume cirúrgico está associada a uma melhor sobrevida de seis meses e não há custos adicionais para o sistema de saúde.

SARS-CoV-2 Drive/Walk-Thru screening centers in Colombia: The CoVIDA Project / Centros de tamizaje masivo para SARS COV-2 en Colombia: Proyecto CoVIDA

Abstract Objective: The CoVIDA project is a public-private collaboration led by Universidad de los Andes that contributed to the SARS-CoV-2 epidemiological surveillance in Bogotá and nearby municipalities. We aimed to describe the development and performance of the Drive/Walk-through free RT- PCR for SARS-CoV-2 testing strategy implemented by CoVIDA. Material and method: We performed a descriptive analysis of the characteristics and performance of the CoVIDA Drive/Walk-through testing centers. The model and the process indicators to assess the model's performance were based on international experiences and scientific literature. Two screening centers were imple mented in shopping centers in the north and south of Bogotá. We reported the number of tests taken, the number of positive tests, and the number of participants that used the model by the type of occupations. Results: In total, 36,689 nasopharyngeal RT-PCR tests for SARS-CoV-2 were performed with a 5.75% cumulative positivity. Process indicators showed an excellent performance and an important contribution in reducing barriers to access to testing. Conclusions: the CoVIDA Drive/Walk-through testing centers supported the epidemiological surveillance in asymptomatic or mild-symptomatic population in Bo gotá. Low and middle-income countries can use this model as a cost-effective and innovative solution strategy to intensify testing and help mitigate the pandemic.

Resumen Objetivo: El proyecto CoVIDA es una colaboración público-privada liderada por la Universidad de los Andes que contribuyó a la vigilancia epidemiológica del SARS-CoV-2 en Bogotá y municipios cercanos. Nuestro objetivo fue describir el desarrollo y rendimiento de la estrategia de tamizaje gratuito con RT-PCR mediante un modelo Drive/Walk through para SARS-CoV-2 implementado por CoVIDA. Materiales y métodos: Realizamos un análisis descriptivo de las características y desempeño de los centros de tamizaje Drive/Walk through de CoVIDA. El modelo y los indicadores de proceso para evaluar el desempeño del modelo se basaron en experiencias internacionales y la literatura científica. Se implementaron dos cen tros de tamizaje en centros comerciales del norte y sur de Bogotá. Se reportó la cantidad de pruebas tomadas, pruebas positivas y de participantes que utilizaron el modelo de acuerdo con el tipo de ocupaciones. Resultados : En total, se realizaron 36,689 pruebas RT-PCR nasofaríngeas para SARS-CoV-2 con una positividad acumulada del 5,75%. Los indicadores de proceso mostraron un excelente desempeño y una contribución importante en la reducción de las barreras de acceso a las pruebas. Conclusiones: los centros de tamizaje con modelo Drive/Walk through de CoVIDA apoyaron la vigilancia epidemiológica en población asintomática o con síntomas leves en Bogotá. Los países de ingresos bajos y medianos pueden utilizar este modelo como una estrategia innovadora y rentable para aumentar la realización de las pruebas y ayudar a mitigar la pandemia.

Microcarcinoma papilar de tiroides: ¿es adecuada la selección para protocolo de vigilancia activa? / Papillary thyroid microcarcinoma: is selection suitable for active surveillance protocol?

Introducción. Los microcarcinomas papilares de tiroides son tumores de hasta 10 mm en su diámetro mayor. Su tratamiento es sujeto de debate y se propone, desde seguimiento clínico, hasta intervención quirúrgica temprana. Este estudio buscó identificar factores de riesgo relacionados con compromiso ganglionar, que permitan una mejor selección de los pacientes en nuestro medio, en quienes se propone manejo quirúrgico inmediato o vigilancia activa, en consonancia con la clasificación del riesgo de progresión. Métodos. Estudio de cohorte analítica ambispectiva que incluyó pacientes con microcarcinoma papilar de tiroides llevados a tiroidectomía más vaciamiento central. Se caracterizó la población y se realizó un análisis de regresión logística multivariado para definir factores preoperatorios asociados al compromiso ganglionar. Adicionalmente, se evaluó de manera retrospectiva la eventual asignación a grupos de riesgo de progresión, según los criterios de Miyauchi, y su comportamiento respecto al estado nodal. Resultados. Se incluyeron 286 pacientes. El 48,9 % presentó compromiso ganglionar, y de estos, el 33,5 % presentó compromiso ganglionar significativo, que modificó su clasificación de riesgo de recaída. De estos últimos, el 59,5 % hubiesen sido manejados con vigilancia activa, según los criterios propuestos por Miyauchi. Se identificó que la edad menor de 55 años, los ganglios sospechosos en la ecografía y los nódulos mayores de 5 mm, se relacionan con compromiso ganglionar significativo. Discusión. El manejo quirúrgico inmediato parece ser una opción adecuada para pacientes con sospecha de compromiso ganglionar en ecografía preoperatoria, pacientes menores de 55 años y nódulos mayores de 5 mm. Es posible que los actuales criterios para definir vigilancia activa no seleccionen adecuadamente a los pacientes en nuestro medio.

Introduction. Papillary thyroid microcarcinomas are tumors up to 10 mm in greatest diameter. Its treatment is subject of debate, and it is proposed from clinical follow-up to early surgical intervention. The aim of the study was to identify risk factors related to lymph node involvement, which allow a better selection of patients in our setting, in whom immediate surgical management or active surveillance is proposed, in accordance with the classification of risk of progression.Methods. Ambispective analytic cohort study that included patients with papillary thyroid microcarcinoma who underwent thyroidectomy and central dissection. The population was characterized and a multivariate logistic regression analysis was performed to define preoperative factors associated with lymph node involvement. Additionally, eventual assignment to progression risk groups, according to the Miyauchi criteria, and their nodal state were evaluated.Results. 286 patients with papillary thyroid microcarcinoma were included. Among them, 48.9% had lymph node disease, and 33.5% had a significant lymph node disease that increased their relapse risk classification. Of the latter, 59.5% could have had a conservative treatment, under Miyauchi's criteria. For ages < 55 years old, suspect nodes in ultrasound and nodules > 5 mm were identified as related to significant lymph node involvement.Discussion. Immediate surgical management appears to be an appropriate option for patients with suspected lymph node involvement on preoperative ultrasound, patients younger than 55 years and nodules larger than 5 mm. It is possible that the current criteria for defining active surveillance do not adequately select patients in our setting.

Chagas disease-related mortality in Colombia from 1979 to 2018: temporal and spatial trends

Abstract INTRODUCTIOn: Studies on Chagas disease-related mortality assist in decision-making in health policies. We analyzed the epidemiological characteristics, temporal trends, and regional differences in Chagas disease-related mortality in Colombia from 1979 to 2018. METHODS: A time-series study was conducted using death records and population data from the National Administrative Department of Statistics, using categorizations from the International Classification of Disease (ICD)-9 and ICD-10 systems. All deaths with Chagas disease as an underlying or associated cause of death were included. Crude and age-sex standardized mortality rates per 100,000 inhabitants and the annual percent change (APC) were calculated. RESULTS: Of the 7,287,461 deaths recorded in Colombia during 1979-2018, 3,276 (0.04%) deaths were related to Chagas disease-2,827 (86.3%) as an underlying cause and 449 (13.7%) as an associated cause. The average annual age-sex standardized mortality rate was 0.211 (95% confidence interval [CI]: 0.170-0.252) deaths/100,000 inhabitants, with a significant upward trend (APC = 6.60%; 95% CI: 5.9-7.3). The highest Chagas disease-related death rates were in males (0.284 deaths/100,000 inhabitants), those ≥65 years old (1.296 deaths/100,000 inhabitants), and residents of the Orinoco region (1.809 deaths/100,000 inhabitants). There was a significant increase in mortality in the Orinoco (APC = 8.28%; 95% CI: 6.4-10.2), Caribbean (APC = 5.06%; 95% CI: 3.6-6.5), and Andean (APC = 4.63%; 95% CI: 3.9-5.3) regions. CONCLUSIONS: Chagas disease remains a major public health issue in Colombia with high mortality rates in older age groups, a wide geographic distribution, regional differences, and the potential to increase.

Factores pronóstico asociados a parto prematuro en mujeres a quienes se les practicó apendicectomía durante el embarazo en un país de medianos ingresos / Prognosis factors associated with premature delivery in women undergoing appendectomy during pregnancy in a middle-income country

Introducción. El objetivo del estudio fue estimar los factores pronóstico asociados con el parto prematuro y otros resultados clínicos en mujeres embarazadas sometidas a apendicectomía en Colombia.Métodos. Se llevó a cabo un estudio retrospectivo de cohorte a partir de las bases de datos administrativos, que incluyó mujeres embarazadas afiliadas al sistema de salud contributivo en Colombia y sometidas a apendicectomía, entre enero de 2013 y noviembre de 2016. Se estimaron la tasa de parto prematuro, la tasa de mortalidad a los 30 días, el ingreso materno a la unidad de cuidados intensivos a 30 días, el reingreso de la madre a los 30 días y el bajo peso al nacer. Se utilizaron regresiones logísticas multivariadas para identificar estos tres factores pronóstico. Resultados. Se incluyeron 1.589 mujeres en el estudio. La edad media fue de 26,43 ± 5,79 años, el 17,94 % de las apendicectomías se practicaron en el tercer trimestre, el 6,10 % fueron apendicectomías laparoscópicas y el 22,03 % requirió drenaje por peritonitis. Las tasas de parto prematuro, mortalidad a 30 días, ingreso a la unidad de cuidados intensivos a 30 días, reingreso a los 30 días y bajo peso al nacer, fueron 12,08 %, 0,13 %, 9,75 %, 16,93 % y 3,34 %, respectivamente. La edad menor de 18 años, la apendicectomía en el tercer trimestre y el drenaje por peritonitis se asociaron con un mayor riesgo de parto prematuro. El índice de comorbilidad de Charlson, la apendicectomía en el tercer trimestre y el drenaje por peritonitis, se asociaron con un mayor ingreso materno a la unidad de cuidados intensivos.Conclusiones. La apendicectomía en el tercer trimestre y la apendicitis complicada, son factores pronóstico asociados a parto prematuro en mujeres colombianas embarazadas sometidas a apendicectomía

Introduction: The objective of the study was to estimate the prognostic factors associated with premature delivery and other clinical outcomes in pregnant women undergoing appendectomy in Colombia.Methods: A retrospective cohort study was conducted from the administrative healthcare records, which inclu-ded pregnant women affiliated with the contributory health system in Colombia and undergoing appendectomy, between January 2013 and November 2016. The birth rate was estimated, premature delivery rate, the 30-day mortality rate, 30-day maternal admission to Intensive Care Unit (30-ICU), 30-day readmission (30-R-Adm), and low birth weight (LBW). Multivariate logistic regressions were used to identify these three prognostic factors.Results: 1589 women were included in the study. Mean age was 26.43 ± 5.79, 17.94% of the appendectomies were performed in the third trimester, 6.10% were laparoscopic appendectomies and 22% required peritonitis drainage. The Rates of premature delivery, 30-day mortality, 30-ICU, 30-R-Adm and LBW were 12%, 0.13%, 9.75%, 16.93% and 3.34%, respectively. Age under 18 years, appendectomy in the third trimester and peritonitis drainage were associated with an increased risk of premature delivery. Comorbidity Charlson Index, appendectomy in the third trimester and peritonitis drainage were associated with an increased maternal admission to ICU.Conclusions: Appendectomy in the third trimester and complicated appendicitis are prognostic factors associated with premature delivery in Colombian pregnant women undergoing to appendectomy

Perfil de sensibilidad antimicrobiana de microorganismos causantes de infecciones urinarias adquiridas en la comunidad en pacientes con diabetes mellitus en Colombia / Antimicrobial susceptibility profile in urinary pathogens causing community-acquired infections in diabetic patients in Colombia

Resumen Introducción. La infección de las vías urinarias es la más frecuente en pacientes diabéticos, y es un factor determinante de la morbilidad y la mortalidad en este grupo de pacientes. El aumento de la resistencia de los microorganismos adquiridos en la comunidad a los antibióticos comúnmente utilizados para combatirla es alarmante. Objetivo. Determinar el perfil de sensibilidad a los antibióticos de los microorganismos responsables de infecciones urinarias adquiridas en la comunidad en pacientes diabéticos atendidos en algunos hospitales de Colombia. Materiales y métodos. Se hizo un estudio descriptivo de un subgrupo de pacientes diabéticos en el marco de una investigación en adultos con infección de origen comunitario de las vías urinarias. Durante un año, se recolectaron aislamientos de Escherichia coli, Klebsiella spp. y Proteus mirabilis en nueve hospitales de Colombia y se determinó su perfil de sensibilidad mediante métodos microbiológicos y moleculares, para establecer la presencia de betalactamasas de espectro extendido del tipo AmpC y de carbapenemasas del tipo KPC. Resultados. Se recolectaron 68 aislamientos (58 de E. coli, nueve de Klebsiella spp. y uno de P. mirabilis). Cuatro (6,9 %) de los aislamientos de E. coli expresaron dichas betalactamasas, en dos (3,4 %) de ellos, pertenecientes al grupo filogenético B2 y al clon ST131, se detectaron las betalactamasas TEM-1 y CTM-X-15. En otros cuatro (6,9 %) aislamientos de E. coli se encontró el fenotipo AmpC, y en tres de ellos se produjeron las betalactamasas TEM-1 y CMY-2. Un aislamiento de K. pneumoniae expresó la carbapenemasa KPC-3. Conclusión. Se confirmó la presencia de cepas productoras de betalactamasas de espectro extendido y carbapenemasas en microorganismos responsables de infección urinaria adquirida en la comunidad en pacientes diabéticos.

Abstract Introduction: Urinary tract infection is the most common pathology in diabetic patients, and an important determinant of morbidity and mortality among them. The increasing resistance of uropathogens acquired in the community to commonly used antibiotics is alarming. Objective: To identify the profile of antibiotic susceptibility of uropathogens responsible for community-acquired infections among diabetic patients in hospitals in Colombia. Materials and methods: We conducted a descriptive study in a subgroup of diabetic patients in the framework of a larger study in adults with urinary tract infection acquired in the community. Over one year, we collected Escherichia coli, Klebsiella spp. and Proteus mirabilis isolates from nine hospitals in Colombia. Their susceptibility profile was determined using microbiological and molecular methods to establish the presence of extended-spectrum AmpC betalactamases and KPC carbapenemases. Results: We collected 68 isolates (58 E. coli, nineKlebsiella spp. and oneProteus mirabilis). Four (6.9%) of the E. coli isolates expressed extended spectrum betalactamases,two (3.4%) of thembelonged to the phylogenetic group B2 andto ST131 clone and expressed the TEM-1 and CTM-X-15 betalactamases. The AmpC phenotype was found in four(6.9%) of the E. coli isolates, three of which producedTEM-1 and CMY-2 betalactamases. One K. pneumoniaeisolate expressed the KPC-3 carbapenemase. Conclusion: The presence of extended spectrum betalactamases and carbapenemases in uropathogens responsible for community-acquired infection was confirmed in diabetic patients.

Frecuencia de riesgo de desnutrición según la Escala de Tamizado para Desnutrición (MST) en un servicio de Medicina Interna / Screening for malnutrition among hospitalized patients in a Colombian University Hospital

Background: On admission, 30 to 50% of hospitalized patients have some degree of malnutrition, which is associated with longer length of stay, higher rates of complications, mortality and greater costs. Aim: To determine the frequency of screening for risk of malnutrition in medical records and assess the usefulness of the Malnutrition Screening Tool (MST). Material and Methods: In a cross-sectional study, we searched for malnutrition screening in medical records, and we applied the MST tool to hospitalized patients at the Internal Medicine Wards of San Ignacio University Hospital. Results: Of 295 patients included, none had been screened for malnutrition since hospital admission. Sixty one percent were at nutritional risk, with a higher prevalence among patients with HIV (85.7%), cancer (77.5%) and pneumonia. A positive MST result was associated with a 3.2 days increase in length of hospital stay (p = 0.024). Conclusions: The prevalence of malnutrition risk in hospitalized patients is high, but its screening is inadequate and it is underdiagnosed. The MST tool is simple, fast, low-cost, and has a good diagnostic performance.

Manual de práctica clínica basado en la evidencia: controles posquirúrgicos / Evidence-based clinical practice manual: Postoperative controls

Introduction: Post-anesthetic care reduces the anesthesia-related postoperative complications and mortality, shortens the length of stay at the postoperative care units and improves patient satisfaction. Objective: To establish a set of recommendations for immediate post-anesthetic care of patients that received general/regional anesthesia or profound/moderate sedation at the postoperative care units. Methodology: This is a process of "rapid" clinical practice guidelines adaptation, including systematic search. The illegible guidelines for adaptation were rated using AGREE II. The guideline selected to be adapted as the clinical practice handbook was Practice guidelines for post-anesthetic care of the American Society of Anesthesiologists. The manual was evaluated in terms of implementation ability, up-to-date information, relevancy, ethical considerations and patient safety by the group of anesthesiologists and epidemiologists based on Delphi. Result:The manual kept the recommendations on evaluation and monitoring, pharmacological management of postoperative nausea and vomiting, antagonistic actions for sedatives and analgesics and neuromuscular block agents, emergency management and anesthesia recovery, as well as the criteria for discharge from the unit. Indications about the conditions and requirements of the unit and patient admission were also included. Conclusions: This handbook comprises the basic guidelines for primary management of patients at the postoperative care unit. It may be amended or adapted according to the institutional requirements and for specific patient groups and is not intended to replace the existing protocols at the particular institution and does not define outcomes or prognosis.

Introducción: El cuidado posanestésico disminuye las complicaciones y mortalidad poso-peratorias inmediatas relacionadas con la anestesia, acorta la estancia en las unidades de cuidado posoperatoro y mejora la satisfacción de los pacientes. Objetivo: Establecer un conjunto de recomendaciones para el cuidado posantestésico inmediato de los pacientes que recibieron anestesia general/regional o sedación profunda/moderada en la unidades de cuidado posoperatorio. Metodología: Un proceso de adaptación "rápida" de guías de práctica clínica, que incluyó búsqueda sistemática. Se calificaron las guías elegibles a adaptar, mediante AGREE II. La guía seleccionada para su adaptación como manual de práctica clínica fue Practice guidelines for postanesthetic care dela American Society of Anesthesiologists. El manual fue evaluado por un grupo de anestesiólogos y epidemiólogos mediante Delphi, en términos de implementab-ilidad, actualización, pertinencia, consideraciones ética y seguridad del paciente. Resultado: El manual mantuvo las recomendaciones sobre evaluación y monitorización, manejo farmacológico de náuseas y vómito posoperatorio, antagonismo de los efectos de sedantes, analgésicos y agentes de bloqueo neuromuscular, el manejo de la emergencia y recuperación anestésica, y los criterios para egreso de la unidad. Se incluyeron indicaciones sobre condiciones y requisitos de la unidad y el ingreso del paciente a esta. Conclusiones: Este manual es una guía básica sobre el manejo primario de los pacientes en la unidad de cuidado posoperatorio, puede ser modificado o adaptado según los requerimientos institucionales y para grupos específicos de pacientes; no pretende reemplazar los protocolos existentes en cada institución ni puede definir desenlaces ni pronósticos.

Recomendaciones basadas en la evidencia del manejo de complicaciones posquirúrgicas en el contexto colombiano / Evidence-based clinical practice manual: Postoperative complications management

Introduction: Despite advances in perioperative management, acute pain and postoperative nausea and vomitingcontinue to be significant complications worldwide. The frequency and the implications of these complications for the process of recovery impact clinical findings, patient quality of care, and hospital costs. Materials and methods: A search and systematic review of the literature after 2011 was conducted. Three international guidelines were selected and they were paired-rated for quality using the AGREE II tool. Management recommendations, adjusted to the Colombian setting, were adopted on the basis of expert consensus, using the Delphi methodology. Results: Recommendations were generated for adult patients based on the international pain management guidelines for acute pain, postoperative nausea and vomiting, and transfer of critically ill patients. Some of the recommendations are of general nature while others are specific forparticular situations. They were all adapted to the Colombian context, bearing in mind the use of drugs which have not received approval from the healthcare authorities or which are not included in the Mandatory Healthcare Plan. Conclusions: Updating and standardizing clinical management recommendations based on the literature on international guidelines is a useful process, provided it is adapted to the national context. This process and its outcome may be useful for healthcare providers and has a positive effect on patient safety, practitioner performance and efficient use of resources.

Introducción: A pesar de los avances en el manejo perioperatorio, el dolor agudo y las náuseas y vómito posoperatorio aún son importantes complicaciones a nivel mundial. Su frecuencia de presentación y el grado de afectación en el proceso de recuperación impactan aspectos clínicos, la calidad de la atención de los pacientes y los costos hospitalarios. Materiales y métodos: Se realizó búsqueda y revisión sistemática de la literatura a partir de 2011. Se seleccionaron tres guías internacionales y se calificó la calidad de manera pareada con el instrumento AGREE II. Mediante consenso de expertos y utilizando metodología Delphi, se adaptaron las recomendaciones de manejo adaptadas al medio colombiano. Resultados: Se generaron recomendaciones para pacientes adultos extraídas de las guías de manejo internacional de dolor agudo, náuseas y vómito posoperatorio y transporte de paciente complicado. Algunas de las recomendaciones son generales y otras especificas para situaciones particulares. Todas fueron adaptadas al contexto colombiano teniendo en cuenta medicamentos que no cuentan con registro sanitario o no están incluidos en el Plan Obligatorio de Salud. Conclusiones: La actualización y estandarización de recomendaciones de manejo clínico basadas en la literatura de guías internacionales es un proceso útil siempre y cuando se adapte al contexto nacional. Este proceso y su resultado puede ser utilizado por prestadores de salud e impactar positivamente la seguridad del paciente, el desempeño de los profesionales sanitarios y la eficiencia de los recursos.

Guía de práctica clínica para el diagnóstico y el tratamiento de las infecciones bacterianas y micóticas en pacientes oncológicos mayores de 15 años con neutropenia febril posquimioterapia de alto riesgo / Recommendations for diagnosis and treatment of bacterial and fungal infections in cancer patients older than 15 years with febrile neutropenia after high-risk chemotherapy: A Clinical Practice Guideline

Objetivos: El tratamiento actual de las neoplasias busca mejorar la sobrevivencia mediante la aplicación de esquemas de quimioterapia intensificada, que produce una neutropenia más profunda y duradera, que favorece el desarrollo de infecciones bacterianas y micóticas invasoras. Este artículo resume las recomendaciones de una guía para el diagnóstico y tratamiento de las infecciones bacterianas y micóticas en pacientes oncológicos mayores de 15 años con neutropenia febril posquimioterapia de alto riesgo. Métodos: Guía de práctica clínica basada en la evidencia. Se realizó la definición de preguntas clínicas, la búsqueda sistemática de literatura, la evaluación crítica de la evidencia y la formulación de recomendaciones. Se desarrolló una evaluación económica sobre la eficiencia de dos esquemas diferentes de tratamiento antimicótico. Resultados: El presente documento incluye recomendaciones para el diagnóstico de infecciones bacterianas y micóticas en paciente con neutropenia, el uso de profilaxis antibiótica y antimicótica, el tratamiento antibiótico empírico, y el tratamiento antimicótico empírico y anticipado en pacientes mayores de 15 años, acorde con la microbiología del contexto colombiano. Conclusiones: La implementación oportuna de las recomendaciones de la guía acorde con el contexto clínico de cada paciente debe contribuir a mejorar la supervivencia y morbilidad infecciosa de los pacientes con neutropenia febril derivada de la quimioterapia.

Objective: Current cancer treatment is intended to improve survival by implementing intensified chemotherapy strategies, which increases the likelihood of neutropenia and favors the development of bacterial and invasive fungal infections. This paper summarizes clinical practice guideline recommendations for the diagnosis and treatment of bacterial and fungal infections in patients older than 15 years with febrile neutropenia after high risk chemotherapy. Methods: Evidence-based clinical practice guideline. A set of clinical questions was defined, a literature search performed, critical appraisal of the evidence, as the development of recommendations. An economic assessment was carried out on two alternative schemes for fungal therapy. Results: This article includes recommendations for the diagnosis of bacterial and fungal infections in neutropenic patients, prophylaxis for bacterial and fungal infections, empiric antimicrobial treatment, empiric and anticipated antifungal therapy in patients over 15 years, according to the microbiology setting in Colombia. Conclusions: Timely implementation of these recommendations according to each clinical context, should contribute to improve survival and reduce infection-derived morbidity in patients with chemotherapy-induced febrile neutropenia.

Frequency of microorganisms isolated in patients with bacteremia in intensive care units in Colombia and their resistance profiles

OBJECTIVE: The aim of this study was to describe the most frequently found bacterial microorganisms in bloodstream isolates taken from patients in intensive care units in Colombia and their resistance profiles. METHODS: This was a multicentre descriptive observational study that was carried out between January 2001 and June 2008 with laboratory data from 33 participating hospitals in a surveillance network. RESULTS: The most frequently found microorganisms were coagulase-negative Staphylococci 39.6%, Staphylococcus aureus 12.3%, Klebsiella pneumoniae 8.2%, Escherichia coli 5.7%, Acinetobacter baumannii, 4.0% and Pseudomonas aeruginosa 3.8%. Coagulase-negative Staphylococci registered greater than 70% oxacillin resistance rate. S. aureus presented a change in its multiresistance profile during the years of follow-up. There was a trend towards a lower resistance rate among E. coli and K. pneumoniae isolates during the study period while A. baumannii carbapenem resistance rate exceeded 50%. DISCUSSION: There has been a change in the frequency of species being isolated with a higher frequency of enterobacteriaceae compared to Gram-positive microorganisms, in general with a high resistance rate.

Mortality among critically ill patients with methicillin-resistant Staphylococcus aureus bacteremia: a multicenter cohort study in Colombia / Mortalidad en pacientes gravemente enfermos con bacteriemia por Staphylococcus aureus resistente a la meticilina:un estudio multicéntrico de cohortes en Colombia

Objetivo. Evaluar los factores de riesgo asociados con la aparición de bacteriemia por Staphylococcus aureus resistente a la meticilina (MRSA), su pronóstico y los factores determinantes de la mortalidad en pacientes gravemente enfermos en Colombia. Métodos. Estudio retrospectivo multicéntrico de cohortes realizado en el período del 2005 al 2008 en 16 instituciones de atención de salud de referencia públicas y privadas de Bogotá, Colombia, que forman parte de una red nacional de vigilancia epidemiológica y de una red hospitalaria de 4 469 camas. Se analizaron la aparición de resistencia a la meticilina y la mortalidad mediante análisis descriptivos y de tiempo transcurrido hasta un suceso; se estableció un modelo multifactorial de regresión de riesgos proporcionales de Cox para evaluar la asociación entre la resistencia a la meticilina y la mortalidad. Resultados. Se estudiaron 372 pacientes: 186 con bacteriemia por MRSA, apareados aleatoriamente con 186 con bacteriemia por Staphylococcus aureus sensible a la meticilina (MSSA). La cirugía previa, el tratamiento con antibióticos y las infecciones intrahospitalarias se asociaron independientemente con la resistencia a la meticilina. El MRSA provocó hospitalizaciones más prolongadas en los sobrevivientes (mediana de 24 frente a 18 días, P = 0,014). Los factores predictivos de mortalidad fueron: la edad del paciente, un nivel de creatinina superior a 1,21 mg/dl al ingresar en la UCI, la septicemia grave y el requerimiento de inotrópicos. El tratamiento antimicrobiano apropiado y el cambio de tratamiento antimicrobiano constituyeron factores protectores independientes, igual que el sexo masculino. Conclusiones. La resistencia a la meticilina per se no fue un factor pronóstico independiente de la mortalidad. Las condiciones previas, como la edad, la insuficiencia renal inicial, la septicemia grave y el requerimiento de inotrópicos explicaron la mortalidad observada. El tratamiento antimicrobiano apropiado seguía siendo un factor protector. Es obligatorio hacer un llamamiento para mejorar las medidas de control de las infecciones en Colombia y en otros contextos similares.

Objective. To evaluate risk factors associated with methicillin-resistant Staphylococcus aureus (MRSA) bacteremia emergence, its prognosis, and mortality-determining factors in critically ill patients in Colombia. Methods. A multicenter, retrospective cohort study conducted in 2005–2008 at 16 public and private reference health care institutions in Bogotá, Colombia, that form part of a national epidemiological surveillance network and a hospital network with 4 469 beds. Methicillinresistant emergence and mortality were analyzed using descriptive and time-to-event analysis; a multivariate Cox proportional hazard regression model was built to test the association between methicillin resistance and mortality. Results. A total of 372 patients were studied: 186 with MRSA bacteremia, randomly matched with 186 with methicillin-susceptible Staphylococcus aureus (MSSA) bacteremia. Previous surgery, antibiotic exposure, and hospital-acquired infections were independently associated with methicillin resistance. MRSA caused longer hospital stays among survivors (median 24 versus 18 days, P = 0.014). Mortality predictors were: patient age, creatinine level over 1.21mg/dl at ICU admission, severe sepsis, and inotropic requirement. Appropriate antimicrobial therapy and antimicrobial therapy change were independent protective factors, as was male gender. Conclusions. Methicillin resistance per se was not a mortality-independent prognostic factor. Previous conditions, such as age, baseline renal impairment, severe sepsis, and inotropy demand explained the observed mortality. Appropriate antimicrobial therapy remained a protective factor. A call to improve infection control measures in Colombia is mandatory.

The emergence of multidrug-resistant Acinetobacter baumannii in Colombia: a time-series analysis, 2001-2007 / Surgimiento de Acinetobacter baumannii multirresistente en Colombia: un análisis de series de tiempo 2001-2007

Objective This study was aimed at analyzing the phenotypical behavior of Acinetobacter baumannii resistance to antibiotics currently available in Colombia for its treatment. Methods An ecological time-series study was conducted based on information regarding A. baumannii resistance to available antibiotics gathered through a Colombian surveillance system involving 33 reference hospitals. Descriptive analysis and modeling forecasting were also carried out. Results The sample included 5.415 A. baumannii isolates collected from 33 hospitals throughout Colombia. This microorganism was the eighth most frequently isolated pathogen in hospital settings, having 3.8 % isolation frequency in intensive care units (ICUs).The study recorded the presence of multidrug-resistant A. baumannii strains since 2001, as well as a dramatic increase in A. baumannii strains having decreased susceptibility to the antibiotics currently available on the market (30 % to 70 %). Conclusion A. baumannii has shown a clear transition to a multidrug resistance profile in Colombia during recent years which includes resistance to important second-line antibiotics, such as carbapenems.(AU)

Objetivo Analizar la conducta fenotípica de resistencia del Acinetobacter baumannii a los antibióticos disponibles para su tratamiento en Colombia. Métodos Se llevó a cabo un estudio ecológico de series de tiempo basado en la información de resistencia del A. baumannii a los antibióticos, a partir del sistema de vigilancia colombiana de 33 hospitales de referencia. Se realizaron análisis descriptivos y un modelo de pronóstico. Resultados Se incluyeron 5 415 aislamientos de A. baumannii recolectados en 33 hospitales a través del país. Este microorganismo fue el octavo patógeno más aislado en el escenario hospitalario, con una frecuencia de aislamiento de 3,9 % en unidades de cuidado intensivo (UCIs). Se registra la presencia de cepas de A. baumannii multirresistentes desde el año 2001, así como un dramático incremento de cepas de A. baumannii con menor susceptibilidad a los antibióticos disponibles en el mercado, con una variación del 30 al 70 %. Conclusión En los últimos años, en Colombia, el A. baumannii ha mostrado una clara transición hacia un perfil multirresistente que incluye la resistencia a antibióticos de segunda línea como los carbapenems.(AU)