Escala del ambiente de enseñanza-aprendizaje de especialistas médico-quirúrgicos en formación / A scale for the teaching-learning environment of medical-surgical specialists in training

Introducción: La formación de los especialistas médico-quirúrgicos (residentes) se lleva a cabo en hospitales donde confluyen actividades asistenciales y de enseñanza-aprendizaje. El conocimiento sobre este ambiente dual es fundamental para identificar oportunidades para optimizar la calidad y efectividad de ambas actividades. Objetivo: Construir una escala para medir la percepción del ambiente de enseñanza-aprendizaje en la práctica clínica de los residentes en formación en Colombia. Métodos: Se diseñó una escala tipo Likert, que adaptó la guía de la Association for Medical Education in Europe Developing Questionnaires For Educational Research, con los siguientes pasos: revisión de literatura, revisión de la normatividad colombiana con respecto a los hospitales universitarios, síntesis de la evidencia, desarrollo de los ítems, validación de apariencia por expertos y aplicación del cuestionario a residentes. Resultados: Se construyó la escala de Ambiente de la Práctica Clínica (EAPRAC) sobre la base de la teoría educativa de la actividad y del aprendizaje situado en el lugar de trabajo. Inicialmente, se definieron 46 preguntas y, posterior a la validación de apariencia, se conformaron 39 ítems distribuidos en siete dominios: procesos académicos, docentes, convenios docencia-servicio, bienestar, infraestructura académica, infraestructura asistencial y organización y gestión. La aplicación de esta escala a residentes no mostró problemas de comprensión, motivo por el cual no fue necesario depurar la cantidad ni el contenido de los ítems. Conclusiones: La escala construida tiene validez de apariencia por los pares expertos y los residentes, lo que permite que en una fase posterior se le realice la validez de contenido y reproducibilidad(AU)

Introduction: The training of medical-surgical specialists (residents) takes place in hospitals where healthcare and teaching-learning activities converge. Knowledge about this dual setting is essential for identifying opportunities to optimize the quality and effectiveness of both activities. Objective: To construct a scale for measuring the perception about the teaching-learning environment in the clinical practice of residents who receive training in Colombia. Methods: A Likert-type scale was designed as an adapted form of the guide Developing Questionnaires for Educational Research, presented by the Association for Medical Education in Europe, with the following steps: literature review, review of Colombian regulations regarding university hospitals, synthesis of evidence, development of items, validation of appearance by experts, and questionnaire application to residents. Results: A clinical practice environment scale was constructed on the basis of the educational theory of activity and learning situated in the workplace. Initially, 46 questions were defined and, after the validation of appearance, 39 items distributed in seven domains were created: academic processes, teaching processes, teaching-service agreements, welfare, academic infrastructure, care infrastructure, and management and organization. The application of this scale to residents showed no comprehension problems; therefore, it was not necessary to refine the number or content of the items. Conclusions: The scale constructed has validity of appearance by expert peers and residents, which allows, in further stages, to carry out content validity and reproducibility(AU)

Glosoplastía con Técnica de Harada, en un Paciente con Macroglosia por Amiloidosis

RESUMEN: La Macroglosia, corresponde a un cuadro caracterizado por un aumento de tamaño lingual, pudiendo causar alteraciones estéticas y funcionales, llegando incluso a comprometer la vía aérea. Es una de las manifestaciones temprana de la amiloidosis, que a su vez se encuentra asociada a algunos casos de Mieloma Múltiple. Se presenta caso clínico de paciente sexo masculino de 73 años de edad, que presenta macroglosia en servicio de Cirugía Maxilofacial del Hospital del Carmen Maipú, Santiago de Chile. Donde se determinó que la macroglosia estaba en contexto de una amiloidosis, se describe diagnóstico y tratamiento quirúrgico realizado, además de complicación caracterizada por obstrucción de vía aérea, requiriendo Glosoplastía mediante técnica de Harada.

ABSTRACT: Macroglossia corresponds to a condition characterized by an increase in lingual size, which can cause aesthetic and functional alterations, even compromising the airway. It is one of the early manifestations of amyloidosis, which is associated with some cases of Multiple Myeloma. Presented a clinical case of a 73-year-old male patient, presenting macroglossia in the Maxillofacial Surgery service of the Hospital del Carmen Maipú, Santiago de Chile, where it was determined that the macroglossia was in the context of amyloidosis. The diagnosis and surgical treatment performed is described, as a complication characterized by airway obstruction requiring Glossoplasty using the Harada technique.

Perfil clínico-epidemiológico de pacientes diagnosticados com câncer renal em hospital de alta complexidade / Clinical-epidemiological profile of patients diagnosed with kidney cancer in a high complexity hospital

RESUMO Os carcinomas de células renais (CCRs) são o sétimo tipo histológico de câncer mais comum no mundo ocidental e vêm apresentando uma tendência mantida de aumento em sua prevalência. O presente estudo teve por objetivo analisar dados clínicos, demográficos e anatomopatológicos, a partir de prontuários de pacientes diagnosticados com câncer renal, em um centro de referência de oncologia do norte gaúcho. Métodos: Trata-se de pesquisa transversal, realizada com 105 pacientes submetidos a nefrectomias, no período de janeiro de 2013 a setembro de 2018. Resultados: A nefrectomia radical foi realizada em 84,5% de amostras e o anatomopatológico indicou o carcinoma de células claras em 74,1%. Em relação ao sexo, a maioria foi do sexo masculino 64,10% e a idade média foi de 59.9 anos (DP+-11,5), variando de 31 a 81 anos. Quanto aos sintomas, 18% apresentaram a hematúria, em 13,5% dor em flanco, em 10% dor abdominal, e 6,8% dor lombar. Conclusões: O estudo mostrou que o padrão clinico-epidemiológico da neoplasia no hospital estudado está em concordância com a literatura. PALAVRAS-CHAVE: Neoplasias renais, perfil de saúde, neoplasias por tipo histológico

Renal cell carcinomas (RCCs) are the seventh most common histological type of cancer in the Western world and have been showing a sustained upward trend in their prevalence. This study aimed to analyze clinical, demographic and anatomopathological data from medical records of patients diagnosed with kidney cancer, in an oncology reference center in the north of Rio Grande do Sul. Methods: This is a cross-sectional study, carried out with 105 patients undergoing nephrectomies, from January 2013 to September 2018. Results: Radical nephrectomy was performed in 84.5% of samples and the pathological examination indicated clear cell carcinoma in 74.1%. Regarding gender, the majority were male 64.10% and the mean age was 59.9 years (SD+-11.5), ranging from 31 to 81 years. As for symptoms, 18% had hematuria, 13.5% had flank pain, 10% had abdominal pain, and 6.8% had low back pain. Conclusions: The study showed that the clinical-epidemiological pattern of RCC in the studied hospital is in agreement with the literature. KEYWORDS: Kidney neoplasms, health profile, neoplasms by histological type

Validación del Timed Up and Go Test como Predictor de Riesgo de Caídas en Sujetos con Artritis Reumatoidea: Parte II: Validez Concurrente y Predictiva / Validation of the Timed Up and Go Test as Predictor of Risk of Falls in Subjects with Rheumatoid Arthritis: Part II: Concurrent and Predictive Validity

Introducción: Los sujetos con Artritis Reumatoidea (AR) tienen un elevado riesgo de caídas respecto a la población sana. El Timed Up and Go test (TUG) es utilizado para predecir el riesgo de caídas pero no ha sido validado en sujetos con AR. Objetivos: El objetivo primario fue establecer la validez predictiva y la validez concurrente a velocidad habitual y máxima segura en sujetos con diagnóstico de AR. El objetivo secundario fue establecer si el TUG tiene mayor valor predictivo evaluado a velocidad habitual o a velocidad máxima segura. Sujetos y método Los sujetos fueron ingresados mediante muestreo no probabilístico consecutivo. Para la validez concurrente se correlacionó el TUG con la Berg Balance Scale (BBS) y el Test de Marcha de 10 metros (TM10m). La validez predictiva fue calculada utilizando curva de características operativas para el receptor y el área bajo la curva. Resultados: Se evaluaron 115 participantes para la validez concurrente y 98 para la predictiva. Las correlaciones entre el TUG a velocidad habitual y el TUG a velocidad máxima segura con la BBS y el TM10m resultaron fuertes (rango de -0,65 a -0,78). La capacidad predictiva del TUG resultó baja tanto a velocidad habitual como a velocidad máxima segura. Conclusión: El TUG en sus dos versiones presentó una fuerte validez concurrente al ser comparado con la BBS y el TM10m. El TUG presentó una baja validez predictiva tanto a velocidad habitual como a velocidad máxima segura para predecir el riesgo de caídas en sujetos con AR.

Background: Subjects with Rheumatoid Arthritis (RA) have a high risk of falling. The Timed Up and Go test (TUG) is used to predict the risk of falls but it has not been validated in subjects with RA. Purpose: The primary objective was to establish the predictive validity and the concurrent validity of TUG at the preferred walking speed or fastest speed possible as a predictor of falls in subjects with RA. The secondary objective was to establish if the TUG has a higher predictive value evaluated at the preferred walking speed or fastest speed possible. Subjects and method: The subjects were admitted by consecutive non-probabilistic sampling. To establish the concurrent validity, the TUG was correlated with the Berg Balance Scale (BBS) and the 10-meter Walk Test (TM10m). Predictive validity was calculated using the operating characteristics curve for the receiver and the area under the curve. Results: 115 participants were evaluated for concurrent validity and 98 for predictive validity. The correlations between the usual speed TUG and fastest speed TUG with the BBS and the TM10m were strong (range from -0.65 to -0.78). The predictive capacity of the TUG was low at both normal speed and maximum safe speed. Conclusion: The TUG in its both versions presented a strong concurrent validity compared to the BBS and the TM10m.The TUG presented a low predictive validity both at normal speed and at maximum safe speed to predict the risk of falls in subjects with RA.

Epidemiología de la enfermedad por meningococo en Colombia / Epidemiology of meningococcal disease in Colombia

Objetivo: Describir la situación epidemiológica de la enfermedad meningocócica en Colombia. Material y métodos: Estudio descriptivo que recopiló información de diferentes fuentes pertenecientes al Sistema Nacional de Vigilancia en Salud Pública. Las variables fueron analizadas de forma descriptiva y se calcularon las tasas de incidencia cuando los datos requeridos estuvieron disponibles. Resultados: Durante el periodo 2005-2011 se notificaron 1.065 casos, lo que representó un promedio anual de incidencia de 0,36/100.000 habitantes. De estos, se confirmaron tan solo el 46%, lo que apunta a la existencia de una importante brecha de notificación y confirmación. La mayor incidencia se encontró en menores de un año (5,4-6,9/100.000 habitantes) y el 50% de los casos se presentaron en menores de 10 años. Discusión: La Neisseria meningitidis serogrupo B representó la mayor proporción de los aislamientos; sin embargo, en los últimos años los serogrupos Y y C han tenido un repunte importante. Los síntomas fueron en general inespecíficos, el curso de la enfermedad fue rápido y la letalidad fue alta (13,3%). Conclusiones: Existe la necesidad de mejorar las herramientas disponibles para la vigilancia. Las acciones preventivas deben estar dirigidas a lactantes y niños, con protección contra los serogrupos Y y C. Es necesaria la investigación de estrategias contra el serogrupo B.

Objectives: The purpose of this paper was to describe the epidemiology of meningococcal disease in Colombia. Materials and methods: This was a descriptive study based on data from various sources in the National Surveillance System. The variables were analysed descriptively and the incidence rates were estimated when the required data were available. Results: During the 2005-2011 period, 1,065 cases were reported, which represented an annual mean incidence of 0.36/100.000 inhabitants. Of these, only 46% were confirmed, which reveals a gap between reporting and confirmation. The greatest incidence was observed in infants younger than one year (5.4-6.9/100,000) and 50% of the cases occurred in children under 10 years of age. Discussion: Neisseria meningitidis serogroup B represented the greatest proportion of isolates; however, serogroups Y and C have been increasing recently. The symptoms were non-specific, the course of the disease was rapid and the lethality high (13.3%). Conclusions: There is a need to improve the available tools for diagnosis and surveillance. Prevention must be oriented toward infants, toddlers and children including protection against serogroups C and Y. Research into strategies for prevention against serogroup B is also necessary.

Iron from haemoglobin and haemin modulates nucleotide hydrolysis in Trichomonas vaginalis

Extracellular ATP may act as a danger signalling molecule, inducing inflammation and immune responses in infection sites. The ectonucleotidases NTPDase and ecto-5’-nucleotidase are enzymes that modulate extracellular nucleotide levels; these enzymes have been previously characterised in Trichomonas vaginalis. Iron plays an important role in the complex trichomonal pathogenesis. Herein, the effects of iron on growth, nucleotide hydrolysis and NTPDase gene expression in T. vaginalis isolates from female and male patients were evaluated. Iron from different sources sustained T. vaginalis growth. Importantly, iron from haemoglobin (HB) and haemin (HM) enhanced NTPDase activity in isolates from female patients and conversely reduced the enzyme activity in isolates from male patients. Iron treatments could not alter the NTPDase transcript levels in T. vaginalis. Furthermore, our results reveal a distinct ATP, ADP and AMP hydrolysis profile between isolates from female and male patients influenced by iron from HB and HM. Our data indicate the participation of NTPDase and ecto-5’-nucleotidase in the establishment of trichomonas infection through ATP degradation and adenosine production influenced by iron.

Prevención de eventos tromboembólicos con aspirina exclusiva post reemplazo valvular aórtico con bioprótesis / Prevention of thrombo-embolic events with aspirin alone after aortic valve replacement with a biologic prosthesis

Introducción: La principal ventaja de las bioprótesis es no requerir tratamiento anticoagulante. Sin embargo, algunas guías de manejo clínico recomiendan este tratamiento los primeros meses post cirugía. En los últimos años varios autores han demostrado la seguridad del uso exclusivo de aspirina en los primeros 3 meses después del reemplazo valvular aórtico con bioprótesis. Objetivo: Evaluar la morbimortalidad y complicaciones trombo embólicas y hemorrágicas en pacientes sometidos a reemplazo valvular aórtico (RVA) con bioprótesis tratados exclusivamente con aspirina (100 mg) los primeros tres meses post cirugía. Métodos: Estudio retrospectivo de 229 pacientes (137 hombres. edad 65,3 +/- 11,76 años) operados de RVA con bioprótesis entre junio 2006 y diciembre 2011. Hubo 178 cirugías aisladas y 51 combinadas y 20 pacientes tenían endocarditis. Se estudió la morbimortalidad, complicaciones trombo embólicas y sangrado a 30 y 90 días y en el seguimento alejado hasta el 30 de junio de 2012. Resultados: A 30 días hubo 4 accidentes cerebrovasculares, 3 accidentes isquémicos transitorios y una isquemia mesentérica. Fallecieron 8 pacientes (3,5 por ciento). A los 90 días hubo 2 hemorragias (1 hemorragia digestiva, 1 hemotórax), no hubo nuevos eventos trombo embólicos ni otros fallecidos. El seguimiento promedio fue 27.8+/-17,7 meses (rango 6 - 72 meses). Durante el seguimiento fallecieron 17 pacientes y no se registraron eventos trombo embólicos ni hemorrágicos. Conclusión: En pacientes operados de reemplazo valvular aórtico con bioprótesis el uso exclusivo de aspirina fue seguro para prevenir complicaciones trombo embólicas.

Background: The abscense of a need for anticoagulant therapy is a significant advantage of biologic valve prosthesis. However, according to some clinical guidelines conventional anti-coagulant therapy is recommended for the initial 3 months following aortic valve replacement. Aim: The aim of this study was to evaluate morbi-mortality and thrombo-embolic events in patients undergoing aortic valve replacement with a bioprosthesis receiving aspirin during the first 3 months after surgery. Methods: Data on 229 patients (137 males), aged 65.3+/-11.8 years who received biologic aortic valve prosthesis between June 2006 and December 2011 was retrospectively analyzed. 51 patients underwent combined (coronary and/or mitral valve surgery) and 20 patients had infectious endocarditis. Morbidity, mortality, thrombo-embolic and hemorrhagic events were tabulated up to June 30, 2012. Results: During the first 30 days after surgery there were 4 cerebro-vascular events and 1 episode of mesenteric ischemia. Operative (30 day) mortality was 3.5 percent (8 patients). At 90 days, 2 patients had a hemorrhagic event (GI bleeding and hemotho-rax, respectively), but no further embolic events or deaths occurred. Patients were followed for a mean of 27.8 +/-17,7 months (range 6 to 72 months). 17 patients died but no cases of embolism or bleeding were observed. Conclusion: Aspirin was safe and effective for prevention of thrombo-embolic complications following aortic valve replacement with a biologic prosthesis.