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Abstract Introduction: Spinal injuries are common among young adult men. Recognizing kinematics can help reduce the number of late diagnoses, especially if there are consciousness disorders. Vertebral fractures can be single or multiple, and they are often associated with extravertebral injuries. Objectives: To examine the distribution of the lesion based on the mechanism of production, to characterize the neurological condition, to evaluate the lesion pattern and its relationship with extravertebral lesions, and to analyze the treatment. Materials and Methods: This was a multicenter, prospective study of patients admitted with post-trauma vertebral injuries between July 1, 2018 and June 30, 2020. Age, gender, kinematics, neurological condition, affected sector, pattern of injury, and associated extravertebral injuries were all examined. Results: There were 281 patients (60% men) evaluated, with 400 vertebral and 118 extravertebral lesions. The causes were as follows: polytrauma in 62 cases, falls from great heights in 147 patients, and traffic accidents in 98. ASIA E was the most frequently observed neurological picture (8 cases), which was not determined at admission. The T2-L5 sector was the most affected, mostly by compression injuries. Head and chest trauma were the most common extravertebral injuries; there was one case of SCIWORA and one early death. Conclusions: The most commonly affected spinal sectors were thoracolumbar, thoracic, and lumbar; the injuries are typically caused by falls from great heights and, in general, are isolated, with no neurological injuries. The treatment is determined by the stability and neurological condition.

Resumen Introducción: Las lesiones raquídeas son frecuentes en hombres adultos jóvenes. Reconocer la cinemática ayuda a disminuir la tasa de diagnósticos tardíos, principalmente si hay trastornos de la conciencia. Las fracturas vertebrales pueden ser únicas o múltiples, y asociarse con lesiones extravertebrales. Los objetivos de este estudio fueron analizar la distribución de la lesión según el mecanismo de producción, caracterizar el cuadro neurológico, evaluar el patrón de lesión y la asociación con lesiones extravertebrales, y analizar el tratamiento. Materiales y Métodos: Estudio multicéntrico, prospectivo de pacientes con lesiones vertebrales postrauma, que ingresaron entre el 1 de julio de 2018 y el 30 de junio de 2020. Se analizaron los siguientes parámetros: edad, sexo, cinemática, cuadro neurológico, sector afectado, patrón de lesión, lesiones extravertebrales asociadas. Resultados: Se evaluó a 281 pacientes (60% hombres) con 400 lesiones vertebrales y 118 extravertebrales que, en 62 casos, conformaban un cuadro de politraumatismo; 147 con trauma por caída de altura y 98, por accidente de tránsito. El cuadro neurológico más observado fue ASIA E (8 casos), no determinado al ingreso. El sector T2-L5 fue el más afectado, en su mayoría, por lesiones por compresión. Las lesiones extravertebrales más frecuentes fueron el trauma de cráneo y de tórax; hubo un caso de SCIWORA y un óbito temprano. Conclusiones: Los sectores raquídeos más afectados fueron: el toracolumbar, el torácico y el lumbar; las lesiones suelen deberse a caídas de altura y suelen ser únicas, sin cuadro neurológico. El tratamiento se decide según la estabilidad y el cuadro neurológico.

https://doi.org/10.15417/issn.1852-7434.2023.88.2.1510

MORPHOLOGICAL ASPECT OF PYOGENIC SPINAL EPIDURAL ABSCESSES. PART I
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Bazán, Pedro Luis

; Adaro, José Carlos Soria

; Ciccioli, Nicolás Maximiliano

; Adaro, Alfredo Osvaldo Godoy

; Gonzalez, Richard Alejandro Avero

Coluna/Columna

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2022, Volume 21 N. 1 elocation e260738

Abstract: Pt En Es | Text: Pt En Es | PDF: Pt | PDF: En | PDF: Es

RESUMO Introdução: O abscesso peridural piogênico da coluna (PSEA) é de difícil diagnóstico e pode ter consequências devastadoras. A ressonância magnética (RM) tem alta sensibilidade e especificidade, que são aumentadas ainda mais com contraste. Existem várias classificações dos processos infecciosos vertebrais, com ênfase em espondilodiscite. Objetivo: Analisar os parâmetros morfológicos e sua reprodutibilidade; e analisar as diferentes sequências de imagens de ressonância. Métodos: A partir de um banco de imagens, foi planejada uma classificação morfológica do PSEA, com cinco parâmetros: Região (R) que indica os limites superior e inferior do abscesso; Localização (U), indicando se o abscesso é anterior ou posterior dentro do canal; Comprometimento (C), meníngeo ou de conteúdo das estruturas; Associação (A), discite, osteomielite ou ambas e Perivertebral (P), abscesso extravertebral anterior, lateral ou posterior. Os três primeiros parâmetros dão uma ideia do volume da PSEA, enquanto os dois últimos mostram os focos infecciosos relacionados. Trinta e cinco casos foram analisados usando o coeficiente de Kappa. Resultados: A reprodutibilidade global intra e interobservador foi Kappa 0,81. Os resultados para cada parâmetro foram os seguintes: R = 0,95, U = 0,92, C = 0,66, A = 0,70 e P = 0,80. Os três primeiros dão uma noção de volume e os dois últimos se relacionam com a presença de focos infecciosos vertebrais fora do canal. A RM ponderada em T2 com contraste foi considerada a sequência de imagens mais eficaz. Conclusões: A classificação morfológica é simples de usar e tem excelente reprodutibilidade. Os parâmetros com maior reprodutibilidade foram região e localização com valores > 0,92. A adição do contraste de gadolínio aumentou a sensibilidade do diagnóstico; o uso de imagens sagitais e axiais em RM T2 foi a sequência de imagens mais sensível. Nível de Evidência III; Original.

ABSTRACT Background: Pyogenic Spinal Epidural Abscess (PSEA) is difficult to diagnose and can have devastating consequences. Magnetic Resonance Imaging (MRI) has high sensitivity and specificity, which are further increased with the use of contrast. There are several classifications of vertebral infectious processes, with emphasis on spondylodiscitis. Objective: To analyze the morphological parameters and their reproducibility; and to analyze different resonance imaging sequences. Methods: Using an image database, a morphological classification of PSEA was planned, with five parameters: Region (R), indicating the upper and lower limits of the abscess; Location (U), indicating whether the abscess is anterior or posterior within the canal; Compromise (C), meningeal or content of the structures; Association (A), discitis, osteomyelitis or both; and Perivertebral (P), anterior, lateral or posterior extravertebral abscess. The first three parameters give an idea of the volume of the PSEA, while the last two give the related infectious foci. Thirty-five cases were analyzed using Kappa’s coefficient. Results: The global intra- and interobserver reproducibility was Kappa 0.81. The results for each parameter were as follows: R=0.95, U=0.92, C=0.66, A=0.70 and P=0.80. The first three give a notion of volume and the last two relate to the presence of vertebral infectious foci outside the canal. T2 weighted MRI with contrast was found to be the most effective imaging sequence. Conclusion: The morphological classification is simple to use, with excellent reproducibility. The parameters with the highest reproducibility were region and location, with values >0.92. The addition of gadolinium contrast increased the sensitivity of the diagnosis; the use of sagittal and axial images in T2-MRI was the most sensitive imaging sequence. Evidence Level III; Original.

RESUMEN Introducción: El absceso epidural espinal piógeno (PSEA) es difícil de diagnosticar y puede tener consecuencias devastadoras. La resonancia magnética (RM) tiene una alta sensibilidad y especificidad, que aumentan aún más con el contraste. Existen varias clasificaciones de los procesos infecciosos vertebrales, con énfasis en la espondilodiscitis. Objetivo: Analizar los parámetros morfológicos y su reproducibilidad; y analizar las diferentes secuencias de imágenes de resonancia. Métodos: Utilizando un banco de imágenes, se planificó una clasificación morfológica del PSEA, con 5 parámetros: Región (R), que indica los límites superior e inferior del absceso; Ubicación (U), que indica si el absceso es anterior o posterior dentro del canal; Compromiso (C), meníngeo o contenido de las estructuras; Asociación (A), discitis, osteomielitis o ambas; y absceso perivertebral (P), anterior, lateral o posterior extravertebral. Los tres primeros parámetros dan una idea del volumen del PSEA y los dos últimos los focos infecciosos relacionados. Se analizaron 35 casos mediante el coeficiente Kappa. Resultados: La reproducibilidad general intra e interobservador fue Kappa 0,81. Los resultados de cada parámetro fueron los siguientes:: R=0,95, U=0,92, C=0,66, A=0,70 y P=0,80. Los tres primeros dan una noción de volumen y los dos últimos se relacionan con la presencia de focos infecciosos vertebrales fuera del canal. La resonancia magnética ponderada en T2 con contraste se consideró la secuencia de imágenes más eficaz. Conclusiones: La clasificación morfológica es sencilla de utilizar y tiene una excelente reproductividad. Los parámetros con mayor reproducibilidad fueron la región y ubicación con valores > 0,92. La adición de contraste de gadolinio aumentó la sensibilidad del diagnóstico; el uso de imágenes sagitales y axiales en RM T2 fue la secuencia de imágenes más sensible. Nivel de Evidencia III; Original.

https://doi.org/10.1590/s1808-185120222101260738

Attitudes towards the COVID-19 vaccine in the general paraguayan population
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Torales, Julio César

; Rios Gonzalez, Carlos

; O´Higgins, Marcelo Gerardo

; Almirón Santacruz, José

; Duarte, Derlis Gustavo

; Ruiz Díaz, Noelia

; Ayala Servín, José Nicolás

; García Franco, Oscar

; Estigarribia Sanabria, Gladys

; Sanabria Báez, Gabriela

; Ríos Mujica, Patricia

; Villalba Arias, Jorge

; Castaldelli Maia, João Mauricio

; Ventriglio, Antonio

; Barrios Coronel, Iván

Anales de la Facultad de Ciencias Médicas (Asunción)

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dec 2021, Volume 54 N. 3 Pages 25 - 32

Abstract: En Es | Text: En Es | PDF: En | PDF: Es

ABSTRACT Introduction: The COVID-19 pandemic has led to changes affecting the healthcare systems and the approach to the infectious diseases worldwide. The hope to regain a certain level of “normalcy” relays on the development of vaccines. Objectives: The aim of this study was to describe attitudes towards the COVID-19 vaccine in the Paraguayan population, exploring factors that could be addressed to support the SARS-CoV-2 vaccination campaign. Materials and methods: Cross sectional and descriptive study. Participants were recruited through an Internet-based survey, spread through social media, during the month of March 2021. All participants received complete information about the aim of the study, privacy and data-processing. Results: Of the 2,297 participants, 67.9% (n=1,559) were women, 49.9% (n=1,147) were employed, 89.1% (n=2,046) reported a university education, and 96.6% (n=2218) were from urban areas. Overall, 81.8% (n=1,879) of participants stated that they were willing to be vaccinated against COVID-19 if a vaccine was available. A significant relationship has been found between having applied for the influenza vaccine and the intention to get vaccinated against COVID-19 (p <0.0001), with an OR: 3.09 (95% CI 2.1-4.5). Conclusion: The percentage of participants inclined to be vaccinated against the COVID-19 is similar to that of those expecting a proper immunization from the vaccine. Government and health agencies should make an effort to provide accurate information that responds to people's concerns about vaccination, at any level of society.

RESUMEN Introducción: la pandemia de COVID-19 ha provocado cambios que afectan a los sistemas sanitarios y al enfoque de las enfermedades infecciosas en todo el mundo. La esperanza de recuperar un cierto nivel de "normalidad" depende del desarrollo de vacunas. Objetivos: el objetivo de este estudio fue describir las actitudes hacia la vacuna COVID-19 en la población paraguaya, explorando los factores que podrían abordarse para apoyar la campaña de vacunación contra el SARS-CoV-2. Materiales y métodos: estudio transversal y descriptivo. Los participantes fueron reclutados a través de una encuesta por Internet, difundida a través de las redes sociales, durante el mes de marzo de 2021. Todos los participantes recibieron información completa sobre el objetivo del estudio, la privacidad y el procesamiento de datos. Resultados: de los 2297 participantes, el 67,9 % (n=1559) eran mujeres, el 49,9 % (n=1147) estaban empleados, el 89,1 % (n=2046) declararon tener estudios universitarios y el 96,6 % (n=2218) eran de zonas urbanas. En general, 81,8 % (n=1879) de los participantes declararon estar dispuestos a vacunarse contra la COVID-19 si hubiera una vacuna disponible. Se encontró una relación significativa entre haber recibido la vacuna contra la gripe y la intención de vacunarse contra la COVID-19 (p <0,0001), con una OR de 3,09 (95% IC 2,1-4,5). Conclusión: el porcentaje de participantes inclinados a vacunarse contra la COVID-19 es similar al de los que esperan recibir una inmunización adecuada gracias a la vacuna. El gobierno y las agencias de salud deben hacer un esfuerzo para proporcionar información precisa que responda a las preocupaciones de la gente sobre la vacunación, en cualquier nivel de la sociedad.

https://doi.org/10.18004/anales/2021.054.03.25 71 downloads

Effectiveness of Fluoroscopy-Guided Percutaneous Vertebral Biopsy
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Mireles-Cano, José Nicolás

; Gonzalez, Alejandro Miranda

; García-González, Oscar Guillermo

; Pérez, Ricardo Martínez

Revista Brasileira de Ortopedia

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aug 2021, Volume 56 N. 4 Pages 453 - 458

Abstract: Pt En | Text: Pt En | PDF: Pt | PDF: En

Resumo Objetivo Definir a eficácia da biópsia vertebral percutânea guiada por fluoroscopia. Métodos Este é um estudo prospectivo de pacientes com síndrome de destruição vertebral em uma instituição. Os pacientes foram submetidos a biópsias vertebrais transpediculares percutâneas guiadas por fluoroscopia, com obtenção de tecido ósseo e tecido do disco intervertebral, para estudo histopatológico e microbiológico. Idade, sexo, segmento vertebral, estado neurológico, e resultados de biópsia e de cultura foram analisados. Resultados A idade média dos pacientes foi de 53,8 anos (gama: 2 a 83 anos), e o principal local acometido da coluna foi a segmento lombar, em 62% dos casos. Segundo a escala de disfunção da American Spinal Injury Association (ASIA), no pré-operatório, 49% dos pacientes foram classificados como ASIA E, e 100% apresentavam dor. A etiologia definitiva foi identificada em 83% dos pacientes. A etiologia foi agrupada em três categorias: infecciosa, neoplásica, e degenerativa (osteoporótica). O grupo infeccioso era composto por 36% dos pacientes da amostra, e Staphylococcus aureus foi o agente mais comumente identificado; em 34,9% dos casos, a etiologia era neoplásica, principalmente mieloma múltiplo e doença metastática por câncer de próstata; 21,7% dos pacientes apresentavam osteoporose. O tempo cirúrgico médio foi de 47,5 minutos, e a perda média de sangue foi de 10 mL. Nenhuma complicação foi relatada. Conclusão Nesta série, a biópsia percutânea transpedicular guiada por fluoroscopia teve 83% de eficácia no diagnóstico etiológico da síndrome de destruição vertebral. Este procedimento minimamente invasivo deve ser considerado bom, fácil, barato e reprodutível, com baixo risco de complicações em curto e longo prazos.

Abstract Objective To define the effectiveness of fluoroscopy-guided percutaneous vertebral biopsy. Methods Prospective study of patients with vertebral destruction syndrome at one institution. Percutaneous transpedicular vertebral biopsies guided by fluoroscopy were performed, and bony tissue and intervertebral disc tissue were extracted; histopathology and microbiology studies were also performed. Age, sex, vertebral segment, neurologic status, and biopsy and culture results were analyzed. Results The average age of the patients was 53.8 years (range: 2 to 83 years), and the main spine segment was the lumbar segment in 62% of the cases. According to the impairment scale of the American Spinal Injury Association (ASIA), preoperatively, 49% of the patients were classified as Asia E, and 100% had pain. Definitive etiology was identified in 83% of the sample. The etiology was grouped into three categories: infectious, neoplasia, and degenerative (osteoporotic). The infectious group was composed of 36% of the patients, in whom Staphylococcus aureus was the most common agent identified; in 34.9% the sample, the etiology was neoplastic, most commonly multiple myeloma and metastatic disease due to prostate cancer; 21.7% of the patients had osteoporosis. The average surgical time was of 47.5 minutes, the average blood loss was of 10 mL. No complications were reported. Conclusion Transpedicular percutaneous biopsy guided by fluoroscopy had an effectiveness of 83% for the etiological diagnosis of vertebral destruction syndrome in the present series. It should be considered a useful minimally-invasive procedure, which is easy, economical, and reproducible, with low risk of short- and long-term complications.

https://doi.org/10.1055/s-0040-1718950 74 downloads

Retinopatía del prematuro: resultados de un programa de prevención, detección y tratamiento
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Fonseca, Rosanna

; Esteche, Alexis

; Contreras, Verónica

; Margonari, Natalia

; Vera, Laura

; Gonzalez, Emilio

; Brítez, Sebastián

; Sosa, Rolando

; Gini, Leticia

; Martínez, Marcelo

; Borja, Myrian

; González, Gustavo

; Avalos, Domingo

; Eckert, Linette

; González, Nicolas

Pediatría (Asunción)

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apr 2021, Volume 48 N. 1 Pages 12 - 20

Abstract: En Es | Text: En Es | PDF: En | PDF: Es

ABSTRACT Introduction: Retinopathy of Prematurity (ROP) is one of the main preventable causes of blindness in childhood. The Vision Foundation implemented the Prevention, Detection and Treatment Program in 2015. Objective: To describe the implementation results and the outcomes achieved by a ROP program regarding its accessibility, effectiveness and quality of care. Materials and Methods: This was a descriptive and ambispective study of consecutive cases of premature newborns with criteria for evaluation, of a population evaluated in the year 2009 and from 2015 to 2019. Results: The participating neonatal units increased from 3 to 7; covering Asunción, the Central, Caaguazú and Alto Paraná Departments. From the records, it was found that program coverage increased from 36% in 2009 to 97% in 2019. Since the beginning of the program, during the first year the proportion of the number of evaluations increased between 28 and 218%; the global results from July 2015 to December 2019 were: total number of patients with criteria: 2397 patients; total number of patients evaluated: 2,080 (88%), number of patients with ROP: 416/2080 patients (20 %), number of patients with ROP requiring treatment: 76/416 patients (18.3%), overall proportion of severe ROP with treatment: 76/2080 patients (3.4%). Conclusions: The program, using a multidisciplinary team and the innovation of telemedicine, managed to increase the proportion of coverage and the reduction of serious cases that require treatment.

RESUMEN Introducción: La Retinopatía del Prematuro (ROP) es una de las principales causas de ceguera prevenibles en la infancia. La Fundación Visión implementa; el Programa de Prevención, Detección y Tratamiento en el año 2015. Objetivos: Describir los resultados de implementación y los resultados alcanzados por un programa de ROP en su accesibilidad, efectividad y calidad de atención. Materiales y Métodos: Estudio descriptivo, ambispectivo, de casos consecutivos de recién nacidos prematuros con criterios de evaluación; de una población evaluada en el año 2009 y del 2015 al 2019. Resultados: Las unidades neonatales incluidas aumentaron de 3 a 7; cubriendo Asunción, área Central, Caaguazú y Alto Paraná. De los registros se constato que la cobertura aumento de 36% en el año 2009 a 97% en el 2019. Desde que se instaló el programa; en el primer año la proporción del número de evaluaciones aumento entre el 28 y el 216%; y los resultados globales de julio 2015 a diciembre 2019 fueron: número totales de pacientes con criterio: 2397 pacientes; número totales de pacientes evaluados: 2080 (86,8%), número de pacientes con ROP: 416/2080 pacientes (20%), número de pacientes con ROP que requirieron tratamiento: 76/416 pacientes (18,2%), proporción global de ROP grave con tratamiento: 76/2080 pacientes (3,4%). Conclusiones: El programa a través de un equipo multidisplinario y la inovación con telemedicina logró aumentar la proporción de cobertura y la disminución de los casos graves que requirieron tratamiento.

https://doi.org/10.31698/ped.48012021004 300 downloads

Evaluation of salivary protein patterns among a rural population exposed and non-exposed to arsenic-contaminated drinking water in areas of Tucumán (Argentina): a pilot study
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GUBER, Rosa Silvina

; GONZALEZ MAC DONALD, Mauricio

; ALEMAN, Mariano Nicolas

; LUCIARDI, Maria Constanza

; MENTZ, Paula

; WIERNA, Alicia

; ANSONNAUD, Carlos

; GARCIA, Veronica

; ANSONNAUD, Ana María

; SORIA, Analía

Journal of Applied Oral Science

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2021, Volume 29 elocation e20200939

Abstract: En | Text: En | PDF: En

Abstract Arsenic contamination in the environment and groundwater is a major global public health problem. Several researchers suggest that the toxicity of arsenic could be related to oral cancer development, usually resulting from potentially malignant lesions. During pathological processes, salivary proteins suffer modifications, which could lead to the discovery of new biomarkers. Objective To analyze the protein profile in human saliva samples from a rural population exposed to high levels of arsenic in drinking water and its association with potentially malignant lesions. Methodology This observational, analytic and cross-sectional design included 121 patients from the state of Graneros (Tucumán, Argentina). Arsenic concentration in drinking water was determined and, according to the values obtained, individuals were divided into 2 groups: exposed group and non-exposed group. Saliva samples were obtained, and total protein concentration was measured by Bradford method. Finally, Laemmli SDS-polyacrylamide gel electrophoresis was conducted to obtain the protein profile. Results Total protein concentration in saliva was lower in the exposed group than in the non-exposed group. Average areas of 20 and 42 KDa bands were significantly lower in exposed group than non-exposed group. Conclusion Chronic intake of high arsenic concentrations in drinking water produces changes in the salivary protein profile, which is associated with the presence of potentially malignant lesions.

https://doi.org/10.1590/1678-7757-2020-0939 112 downloads

Revisores 2021
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Hoffmann, Agustín Freiberg

; Araiza, Alejandra

; Bernal, Alejandro César Luna

; González, Alicia Isabel Migliaro

; Moreno, Amparo

; Malajovich, Ana

; Ramos, Ana Consuelo

; Lacombe, Andrea

; Treichel, Carlos Alberto dos Santos

; Valdiviano, Carlos Bacilio De La Cruz

; Baroni, Cecilia

; Cracco, Cecilia

; López-Steinmetz, Cecilia

; Marotta, Cecilia

; Ball, César Daniel Costa

; Maldonado, Daniela Patricia Ado

; Trías, Daniel

; Mola, Débora

; Loureto, Diego L.

; Hill-Denee, Diti

; Angeriz, Esther

; Ferrer, Fabiana Espíndola

; Rada, Fernando

; Novoa, Gabriela

; Ariza, Gladys Rocio

; Albistur, Gerardo

; Zambrano, Henry Guillén

; Simkin, Hugo

; Oliveira, Isabel C.V. de

; Janeiro, Isabel

; Janer, Jader

; Sánchez, Javier

; Dapueto, Juan

; Ortega, Lenise Maria Ribeiro

; Crespi, Leonardo Peluso

; Funcasta, Lorena

; Furlán, Luis

; Isidório, Marcelo dos Santos

; Nemes, María Ines Baptistella

; Ayan, María Noel Rodriguez

; Brenlla, María Elena

; Civarolo, María Mercedes

; Chavannes, María Ana Folle

; Hidalgo, María Teresa

; Gonzalez, María Julia Morales

; Palermo, Marina Míguez

; Verde, Mario Javier Luzardo

; Ferreira, Mayrla Andrade

; Brunet, Nicolás

; Núñez, Nicolás Gómez

; Correa, Pablo Sebastián

; Garzaniti, Ramiro

; Condeza, Rayen

; Rodrigues, Rogério

; Bustos, Romina

; Saldívar, Rosa María Cueto

; Moncada, Saul

; Marques, Stela

; Oliveira, Sueli Machado Pereira de

; Pribisev-Beleslin, Tamara

; Paz, Valentina

; Gradin, Victoria Beatriz

; Ortuño, Victor E.C.

Psicología, Conocimiento y Sociedad

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2021, Volume 11 N. 3 Pages 139 - 142

Abstract: Es | Text: Es | PDF: Es

https://doi.org/10.26864/pcs.v11.n3.rev

Relaciones alométricas en estadios tempranos de la especie Brycon moorei Steindachner (Characidae), en condiciones controladas
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David-Ruales, Carlos A.

; Machado-Fracalossi, Débora

; Betancur-Gonzalez, Eliana M.

; Rodríguez-Franco, Nicolás

; Castañeda-Álvarez, Germán

; Florez-Restrepo, Cesar

; Vásquez-Torres, Walter

Actualidades Biológicas

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dec 2020, Volume 42 N. 113 elocation e1

Abstract: Es En | Text: Es En | PDF: Es | PDF: En

Resumen Para Brycon moorei, los datos sobre morfometría, en estados iniciales del desarrollo, son inexistentes. El objetivo de este estudio fue establecer las principales relaciones alométricas en los estadios tempranos de B. moorei. Se analizaron 12 variables merísticas en un tiempo experimental que transcurrió desde la eclosión hasta los 15 días post-eclosión. En el estadio larval vitelino (LV) se registró, en promedio: longitud total (LT) de 4,74 ± 0,05 mm; longitud estándar (LE) de 4,21 ± 0,07 mm; longitud del hocico (SnL) 0,3 ± 0,01; diámetro del ojo (ED) 0,37 ± 0,007 mm; longitud de la cabeza (HL) 1,02 ± 0,04 mm; altura de la cabeza (HH) 0,88 ± 0,069 mm; altura del cuerpo (-BH) 1,26 ± 0,01 mm; longitud hocico-aleta pectoral (SnPF) 1,35 ± 0,034; ausencia de aletas pélvicas, anales y dorsal y el peso fue de 1,8 ± 0,2 mg. En la etapa juvenil (J), las medidas fueron: LT de 25,66 ± 0,64 mm; LE de 21,49 ± 0,63 mm; SnL de 1,69 ± 0,059 mm; ED de 1,71 ± 0,048 mm; HL de 6,33 ± 0,21 mm; HH de 4,89 ± 0,47 mm; BH de 6,13 ± 0,17 mm; SnPF de 6,48 ± 0,19 mm; SnPeF de 10,83 ± 0,28 mm; SnDF de 11,16 ± 0,33 mm; Sn-AF de 3,68 ± 0,34 mm; el peso fue de 221,6 ± 15,84 mg. Para LV, el número de miómeros pre-anales fue 28,65 ± 4,7; los post-anales fueron 23,85 ± 4,27, con un total de 52,47 ± 8,34; para J los miómeros no fueron visibles. Esta información es fundamental para fines ecológicos y productivos en B. moorei.

Abstract For Brycon Moorei, morphometry data in early stages of development is non-existent. The objective was to establish the main allometric relationships in the early stages of B. moorei. 12 meristic variables were analyzed in an experimental time ranging from hatching to 15 days post-hatching. In the larval vitelline stage (LV), it was recorded on average: total length (TL) of 4.74 ± 0.05 mm; standard length (EL) of 4.21 ± 0.07 mm; snout length (SnL) 0.3 ± 0.01; eye diameter (ED) 0.37 ± 0.007 mm; head length (HL) 1.02 ± 0.04 mm; head height (HH) 0.88 ± 0.069 mm; body height (BH) 1.26 ± 0.01 mm; snout-pectoral fin length (SnPF) 1.35 ± 0.034; absence of pelvic, anal and dorsal fins and the weight was 1.8 ± 0.2 mg. In juvenile stage (J), the measures were: LT of 25.66 ± 0.64 mm; LE of 21.49 ± 0.63 mm; SnL of 1.69 ± 0.059 mm; 1.71 ± 0.048 mm ED; HL 6.33 ± 0.21 mm; HH of 4.89 ± 0.47 mm; BH of 6.13 ± 0.17 mm; SnPF of 6.48 ± 0.19 mm; SnPeF of 10.83 ± 0.28 mm; SnDF of 11.16 ± 0.33 mm; Sn-AF of 3.68 ± 0.34 mm; the weight was 221.6 ± 15.84 mg. For the LV, the number of pre-anal myomers was 28.65 ± 4.7; the post-anal was 23.85 ± 4.27, with a total of 52.47 ± 8.34; for J the myomers were not visible. This information is essential for ecological and productive purposes in B. moorei.

https://doi.org/10.17533/udea.acbi.v42n113a02 137 downloads

10.

Characteristics and Surgical Outcomes in Very Elderly Patients (≥75 years) with Renal Cell Carcinoma: Data from the Latin American Renal Cancer Group
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Garza-Gangemi, Adrián M.

; Castillejos-Molina, Ricardo A.

; Gueglio, Guillermo

; Tobia-Gonzalez, Ignacio P.

; Jurado, Alberto M.

; Meza-Montoya, Luis

; Scorticati, Carlos H.

; Henriques-da-Costa, Walter

; Yandian, Juan

; Ubillos, Luis

; Glina, Sidney

; Tobias-Machado, Marcos

; Rodríguez-Faba, Oscar

; Ameri, Carlos

; Nolazco, Alejandro

; Martinez, Pablo

; Franco Carvalhal, Gustavo

; Bengio, Ruben G.

; Arribillaga, Leandro Cristian

; Langenhin, Raúl

; Muguruza, Diego

; Campos-Salcedo, José G.

; Bravo-Castro, Edgar I.

; Mingote, Pablo A.

; Ginestar, Nicolás

; Autran-Gomez, Ana M.

; Puente, Roberto

; Decia, Ricardo

; Cardoso-Guimarães, Gustavo

; Palou-Redorta, Joan

; Abreu-Clavijo, Diego

; Cassio-Zequi, Stenio de

; Rodriguez-Covarrubias, Francisco T.

Revista de investigación clínica

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oct 2020, Volume 72 N. 5 Pages 308 - 315

Abstract: En | Text: En | PDF: En

Background: The incidence of renal cell carcinoma (RCC) is increasing globally due to an aging population and widespread use of imaging studies. Objective: The aim of this study was to describe the characteristics and perioperative outcomes of RCC surgery in very elderly patients (VEP), ≥ 75 years of age. Methods: This is a retrospective comparative study of 3656 patients who underwent the treatment for RCC from 1990 to 2015 in 28 centers from eight Latin American countries. We compared baseline characteristics as well as clinical and perioperative outcomes according to age groups (<75 vs. ≥75 years). Surgical complications were classified with the Clavien-Dindo score. We performed logistic regression analysis to identify factors associated with perioperative complications. Results: There were 410 VEP patients (11.2%). On bivariate analysis, VEP had a lower body mass index (p < 0.01) and higher ASA score (ASA >2 in 26.3% vs. 12.4%, p < 0.01). There was no difference in performance status and clinical stage between the study groups. There were no differences in surgical margins, estimated blood loss (EBL), complication, and mortality rates (1.3% vs. 0.4%, p = 0.17). On multivariate regression analysis, age ≥75 years (odds ratio [OR] 2.33, p < 0.01), EBL ≥ 500 cc (OR 3.34, p < 0.01), and > pT2 stage (OR 1.63, p = 0.04) were independently associated with perioperative complications. Conclusions: Surgical resection of RCC was safe and successful in VEP. Age ≥75 years was independently associated with 30-day perioperative complications. However, the vast majority were low-grade complications. Age alone should not guide decision-making in these patients, and treatment must be tailored according to performance status and severity of comorbidities. (REV INVEST CLIN. 2020;72(5):308-15)

https://doi.org/10.24875/ric.20000018 141 downloads

11.

Resección de nódulo pulmonar en pulmón trasplantado bajo asistencia con membrana de oxigenación extracorpórea
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Parrilla, Gustavo A

; Dosso, Nicolás A

; Absi, Daniel O

; Defranchi, Sebastián

; Osses, Juan M

; Gonzalez, José L

; Bertolotti, Alejandro M

Revista argentina de cirugía

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sep 2019, Volume 111 N. 3 Pages 184 - 190

Abstract: En Es | Text: En Es | PDF: En | PDF: Es

The use of perioperative support with extracorporeal membrane oxygenation (ECMO) systems is a novel concept in general thoracic surgery We report the case of a male patient with a history of right lung transplant due to idiopathic pulmonary fibrosis (IPF) who required resection of a right pulmonary nodule under veno-venous (VV) ECMO support. The use of VV-ECMO is a feasible option in selected cases when complications are expected to occur with one lung ventilation.

La utilización de soporte perioperatorio con sistema de oxigenación a través de membrana extracorpórea (ECMO) es un concepto novedoso en cirugía torácica general. Se presenta el caso de un paciente con trasplante pulmonar derecho por fibrosis pulmonar idiopática (FPI) que requirió la resección de un nódulo pulmonar homolateral con soporte de ECMO veno-venoso (VV). El soporte a través de ECMO VV es una opción viable cuando se prevén dificultades con la ventilación unipulmonar en casos seleccionados.

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12.

BLOCK RESECTION OF LUMBAR OSTEOBLASTOMA. PRESENTATION OF A CASE AND BIBLIOGRAPHICAL UPDATE
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Bazán, Pedro Luis

; Gonzalez, Richard Avero

; Ciccioli, Nicolás Maximiliano

; Casco, Enrique Alcides

; Borri, Álvaro Enrique

; Medina, Martín

Coluna/Columna

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dec 2018, Volume 17 N. 4 Pages 323 - 325

Abstract: Pt En Es | Text: Pt En Es | PDF: Pt | PDF: En | PDF: Es

RESUMO Objetivo: Apresentar caso clínico e atualizar bibliografia. Material e Método: Masculino, 24 anos de idade, consultado devido a lombociatalgia direita com três anos de evolução, com topografia L5 e déficit motor (M4). A radiografia mostra uma lesão radiopaca entre a quarta e a quinta vértebras lombares, com obliteração do pedículo direito de L4. A tomografia identifica uma lesão lítica parcialmente circundada por esclerose, com um ninho central de três centímetros de diâmetro localizado no pedículo direito com acometimento do processo transverso e reação do espaço intertransversário (Enneking 3). É complementado com ressonância magnética e cintilografia óssea, biópsia percutânea guiada por tomografia diagnóstica: osteoblastoma e focos de necrose. A ressecção radical foi realizada em bloco, com margens livres do tumor e estabilização instrumentada. Resultados: Após o tratamento cirúrgico o paciente evoluiu favoravelmente, revertendo o déficit motor. O estudo anatomopatológico da peça confirma o resultado pré-operatório. Discussão: A ressecção intralesional pode ser uma opção nos estágios de Enneking 2. Nos estágios de Enneking 3, uma biópsia diagnóstica percutânea pode ser útil e a ressecção em bloco é preferida como um tratamento definitivo. Conclusão: O manejo do osteoblastoma espinal requer uma análise clínica e imagética exaustiva. A ressecção de bloco com margens livres é preferida em casos avançados para o gerenciamento e para diminuir o risco de recorrência. Nível de Evidência IV; Série de casosh.

ABSTRACT Objective: To present the clinical case and update the bibliography. Methods: A male patient, 24 years of age, sought treatment for right lumbosciatalgia of 3 years of evolution with topography L5 and motor deficit (M4). The radiograph showed a radiopaque lesion between the fourth and fifth lumbar vertebrae, with right pedicle effacement of L4. The tomography identified a lytic lesion, partially surrounded by sclerosis with a central nest of 3 centimeters in diameter located in the right pedicle with involvement of the transverse apophysis and reaction of the intertransverse space (Enneking 3). It was complemented by magnetic resonance and bone scintigraphy. The percutaneous biopsy guided by tomography yielded a diagnosis of osteoblastoma and foci of necrosis. A radical block resection was performed with clear tumor margins and instrumented stabilization. Results: After the surgical treatment, the patient evolved favorably, reversing the motor deficit. The anatomopathological study of the specimen confirms the preoperative diagnosis. Discussion: Intralesional resection may be an option in Enneking stage 2. In Enneking stage 3, a percutaneous diagnostic biopsy may be useful, and block resection is the preferred definitive treatment. Conclusions: The management of spinal osteoblastoma requires an exhaustive clinical-imaging analysis. Block resection with clear margins is preferred in advanced cases for management and to decrease the risk of recurrence. Level of Evidence IV; Case seriesh.

RESUMEN Objetivo: Presentar un caso clínico y actualizar bibliografía. Métodos: Un paciente de sexo masculino, 24 años de edad, buscó tratamiento para lumbociatalgia derecha de 3 años de evolución, con topografía L5 y déficit motor (M4). La radiografía mostró lesión radiopaca entre la cuarta y quinta vértebra lumbar, con borramiento pedicular derecho de L4. La tomografía identificó lesión lítica rodeada parcialmente de esclerosis, con nido central de 3 centímetros de diámetro ubicada en el pedículo derecho con afectación de la apófisis transversa y reacción del espacio intertransversario (Enneking 3). La tomografía fue complementada con resonancia magnética y gammagrafía ósea. La biopsia percutánea guiada por tomografía produjo diagnóstico de osteoblastoma y focos de necrosis. Se llevó a cabo la resección radical en bloque con márgenes libres del tumor y estabilización instrumentada. Resultados: Luego del tratamiento quirúrgico, el paciente ha evolucionado favorablemente, revirtiendo el déficit motor. El estudio anatomopatológico de la pieza confirma el diagnóstico preoperatorio. Discusión: La resección intralesional puede ser una opción en los estadios Enneking 2. En los estadios Enneking 3, puede ser útil la realización de una biopsia percutánea diagnostica, y como tratamiento definitivo se prefiere la resección en bloque. Conclusiones: El manejo del osteoblastoma espinal requiere un exhaustivo análisis clínico-imagenológico. La resección en bloque con márgenes libres es preferida en los casos avanzados para el manejo y disminuir el riesgo de recidivas. Nivel de Evidencia IV; Serie de casosh.

https://doi.org/10.1590/s1808-185120181704179649 717 downloads

13.

Isotopic niches of four commercially important pelagic elasmobranch species captured by the small-scale driftnet fishery of northern Peru
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Alfaro-Cordova, Eliana

; Solar, Alonso Del

; Gonzalez-Pestana, Adriana

; Acuña-Perales, Nicolás

; Coasaca, Javier

; Cordova-Zavaleta, Francisco

; Alfaro-Shigueto, Joanna

; Mangel, Jeffrey C.

Latin american journal of aquatic research

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2018, Volume 46 N. 2 Pages 482 - 488

Abstract: En | Text: En | PDF: En

ABSTRACT Despite the high landings of elasmobranch in Peru, little is known about some aspects of their basic biology, including their trophic ecology. The present study aims to provide basic information regarding the isotopic niche and trophic interactions of four pelagic elasmobranchs of commercial importance in northern Peru (Alopias spp., Galeorhinus galeus, Sphyrna zygaena, and Mobula japanica). One hundred and twenty-four samples were collected from fishing activities between January and December 2015 and processed for stable isotopes analysis (δ13C and δ15N), using Bayesian statistics to describe their isotopic niche. Differences between species were assessed using PERMANOVA and PERMDISP, allowing testing length, sex, and latitude as covariates. These combined results suggest trophic redundancy among sharks. However, unique areas of no overlap in the SEAC of all species could evidence a broad niche with a low interaction between these sharks. M. japanica had no overlap with any shark species, which indicates a trophic niche that is distinct from other elasmobranch top predators. Increasing sample size and including temporal covariates should help define these isotopic niches better, either by merging or splitting the studied elasmobranchs into more specific groupings. Further complementary studies are required to better understand trophic interactions within the pelagic community ecosystems.

https://doi.org/10.3856/vol46-issue2-fulltext-24 642 downloads

14.

Enfermedad de Paget extramamaria de la vulva: a propósito de un caso clínico
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Ogueta, Isabel

; Hermosilla, Nicolás

; Muñoz, Daniel

; Gonzalez, Sergio

Revista chilena de obstetricia y ginecología

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dec 2017, Volume 82 N. 6 Pages 633 - 638

Abstract: En | Text: En | PDF: En

RESUMEN La Enfermedad de Paget extramamaria de la vulva es una neoplasia poco frecuente que representa solo el 1% de los cánceres de vulva. Clínicamente, se caracteriza por una placa eritematosa, bien definida, con erosiones y ulceraciones. El síntoma más frecuente es el prurito. Esta clínica tan inespecífica puede retrasar el diagnóstico, además de inducir a tratamientos inadecuados. El diagnóstico se realiza con estudio histopatológico e inmunohistoquímica, la cual orienta si es primario de piel o metástasis de otro cáncer, usualmente genitourinario o gastrointestinal subyacente. Actualmente no hay guías clínicas de tratamiento, pero dentro de las opciones la más aceptada es la cirugía de Mohs. Otros tratamientos incluyen uso de imiquimod, láser CO2, quimioterapia tópica o local, radioterapia o terapia fotodinámica. Cuando se trata de una enfermedad de Paget extramamaria primaria, el pronóstico es excelente y la mayoría de los pacientes fallece por otra condición. En cuanto a la enfermedad invasora, tiene una mortalidad de 13-18% con sobrevida a 5 años de 72% (1)

5451 downloads

15.

IMPLEMENTATION OF AN ANALYTICAL METHOD FOR THE DETERMINATION OF INORGANIC ARSENIC SPECIES IN OCCUPATIONALLY EXPOSED HUMAN URINE SAMPLES AND ITS TOXIC EFFECTS ON EPITHELIAL CELLS OF RENAL COLLECTING TUBULE
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ROLDÁN, NICOLE

; SALINAS-PARRA, NICOLÁS

; GONZALEZ, ALEXIS A

; CIFUENTES-ARANEDA, FLAVIA

; ARIAS, HELEN

; BRAVO, MANUEL

; QUIROZ, WALDO

Journal of the Chilean Chemical Society

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dec 2016, Volume 61 N. 4 Pages 3214 - 3218

Abstract: En | Text: En | PDF: En

In this study a method was implemented for the determination of total As and its inorganic species in human urine by HPLC-HG-AFS. The method was applied to workers occupationally exposed to mining and thermoelectric operations. Results shows high levels of As in urine up to 188±4 μg L-1 and As(III) up to 10.7±0.6 μg L-1. Toxic effects of As(III) at the concentration levels founded in human urine were evaluated over the morphology and fibrosis of renal epithelial collecting duct cells in vitro. Our results suggest that urinary tract epithelial renal tubular cells exposed to this concentration of As(III) result in epithelial-mesenchymal transition.

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