Cirugía colorrectal en tiempos de COVID-19: guías de recomendación del Hospital Británico de Buenos Aires / Colorectal surgery in times of COVID-19: recommendation guides of the British Hospital of Buenos Aires

Se trató de redactar una guía para la práctica segura de la especialidad en tiempos de COVID-19. Se realizó una búsqueda de las publicaciones recientes disponibles en Pub-Med y en otros buscadores, se utilizó la experiencia de expertos a través de diferentes conferencias o comunicados de sociedades científicas. Esta pandemia nos ha obligado a aprender de una manera vertiginosa el manejo de una nueva enfermedad, donde especialistas en cirugía comenzamos a hablar de terminología clínica, virológica, entre otras completamente nueva y desconocida para la mayoría de nosotros. Tuvimos que adaptar nuestra práctica habitual a nuevos estándares, cometiendo diferentes errores en el manejo inicial, provocados por la falta de información previa. La guía trata de abarcar los tópicos considerados más relevantes en este momento, como son el manejo del consultorio, recomendaciones de que patologías se recomienda operar y cuáles no. Recomendaciones de tratamientos alternativos al quirúrgico mientras dura la pandemia. Métodos de diagnósticos utilizados para evaluar infección en pacientes que se someterán a una cirugía, etc. Se agregaron links y apéndices para aquellos que deseen ampliar algún tema en particular, esto evita que la guía sea más extensa y pierda su practicidad con la que fue pensada. Esperamos esta guía sirva para facilitar la compresión de esta nueva enfermedad y su manejo para cualquier cirujano que necesite asistir a pacientes con patología colorrectal. Seguramente al finalizar estas líneas habrá nueva evidencia que deberá ser adaptada e incorporada a la presentada actualmente.

An attempt was made to write a guide for the safe practice of the specialty in times of COVID-19. A search of recent publication available in Pub-Med and other platforms was performed. Experts' opinions and experiences were taken into account from various conferences or communications of scientific societies. This pandemic has forced us to learn the management of a new disease in a sudden way. Surgical specialists began to learn clinical and virologic terminology, among other new concepts previously ignored by most of us. We were forced to adapt our usual practice to new standards, making different mistakes in the initial handling, caused by the lack of prior information.The present guide tries to cover the topics considered most relevant at this time, such as outpatients ́ management, recommendations of which patients we should operate on and which procedures should be postponed. Recommendations for alternative treatments to surgery while the pandemic lasts. Diagnostic methods used to assess infection in patients who will undergo surgery, etc. Links and appendices have been added for those who wish to expand on a particular topic, this prevents the guide from being too extensive and losing the practicality with which it was intended. We hope this guide will facilitate the understanding of this new disease and its management for any surgeon who needs to assist patients with colorectal pathology. By the time we would have finished these lines there will be new evidence that must be adapted and incorporated into those currently presented.

Competencia específica para ejercer la colonoscopía / Specific competence to practice colonoscopy

RESUMEN Introducción: Para ejercer la colonoscopía en un país latinoamericano es requisito certificar la adquisición de la competencia específica, pero no hay consenso respecto a los criterios que la definen. La falta de formación en competencias en endoscopía digestiva, se asocia a mayor riesgo de error diagnóstico y terapéutico; diagnóstico tardío del cáncer, mayor riesgo de complicaciones y la realización de procedimientos incompletos con consecuencias negativas para los pacientes. Objetivo: Establecer los criterios de desempeño de la competencia específica requerida por un especialista para ejercer la colonoscopía, con el fin de impactar con mejores resultados en la calidad de la salud. Materiales y métodos: Estudio cualitativo de consenso de expertos. Con entrevistas personales semiestructuradas se documenta la información para realizar los cuestionarios que se aplican en rondas sucesivas hasta alcanzar consenso mayor al 70% con la participación de más del 80% de los expertos, utilizando el método Delphi. Resultados: Se identifican los criterios de desempeño, que determinan la competencia específica requerida para ejercer con calidad y seguridad la colonoscopía. Con hallazgos significativos por el alto porcentaje de acuerdo, se presentan agrupados en 4 categorías: general, antes, durante y posterior al procedimiento. Dentro de los criterios más importantes que alcanzaron un acuerdo del 100%, están los relacionados con habilidades cognitivas, motoras e integrativas; calidad, seguridad, tamización, técnicas diagnósticas y terapéuticas de este procedimiento. Conclusión: Los criterios estandarizados por consenso, constituyen una herramienta muy valiosa en los países latinoamericanos para la formación y evaluación de competencias.

ABSTRACT Introduction: To practice colonoscopy in a Latin American country it is required to certify the acquisition of specific competence, but there is no consensus regarding the criteria that define it. Lack of training in digestive endoscopy skills is associated with an increased risk of diagnostic and therapeutic error; late diagnosis of cancer, increased risk of complications and incomplete procedures with negative consequences for patients. Objective: To establish the performance criteria of the specific competence required by a specialist to perform colonoscopy, in order to impact with better results on the quality of health. Materials and methods: Qualitative study of consensus of experts. With semi-structured personal interviews, the information is documented to carry out the questionnaires that are applied in successive rounds until reaching consensus of more than 70% with the participation of more than 80% of the experts, using the Delphi method. Results: Performance criteria are identified, which determine the specific competence required to perform colonoscopy with quality and safety. With significant findings due to the high percentage of agreement, they are presented grouped into 4 categories: general, before, during and after the procedure. Among the most important criteria that reached 100% agreement, are those related to cognitive, motor and integrative skills; quality, safety, screening, diagnostic and therapeutic techniques of this procedure. Conclusion: The criteria standardized by consensus, constitute a very valuable tool in the Latin American countries for the formation and evaluation of competences.

Avaliação do serviço de coleta para exame colpocitológico pela escala SERVQUAL / Evaluación del servicio de recolección para examen colpocitológico por la escala SERVQUAL / Avaliação do serviço de coleta para exame colpocitológico pela escala SERVQUAL

ABSTRACT Objective: To analyze women's perception of the quality of the service provided for colposcopy test in the city of Belém (PA), Brazil. Method: Quantitative-descriptive study on 400 women who underwent Pap test on the public healthcare network, using the Service Quality (SERVQUAL) model. We used the Cronbach's alpha index to measure the reliability of the scale, and data were analyzed by quartiles of the gaps of the dimensions: tangibility, responsiveness, reliability, assurance, and empathy. Results: The assurance dimension, corresponding to the knowledge and courtesy of staff, featured the highest degree of importance to users; and empathy, which corresponds to the staff's concern with women's needs, featured the lower degree. The most expressive negative gaps concerned the structure of services and the attitude of healthcare professionals when collecting the material. Conclusion: All gaps featured negative relationship between what was expected and perceived, expressing dissatisfaction regarding the service.

RESUMEN Objetivo: Analizar la percepción de mujeres acerca de la calidad del servicio de colpocitología oncótica en Belém (PA). Método: Estudio cuantitativo-descriptivo con 400 mujeres que realizaron el examen de colpocitología oncótica en la red pública de salud, utilizando el modelo Service Quality (SERVQUAL). Se utilizó el Alpha de Cronbach para medir la confiabilidad de la escala, y los datos fueron analizados por los cuartiles de los gaps de las dimensiones: tangibilidad, responsividad, confiabilidad, credibilidad y empatía. Resultados: La dimensión credibilidad, correspondiente al conocimiento y a la cortesía de los funcionarios, presentó mayor grado de importancia para las usuarias; y la empatía, que corresponde a la preocupación demostrada por los funcionarios con las necesidades de las mujeres, exhibió menor grado. Los gaps negativos más expresivos se refieren a la estructura de los servicios y a la actitud de los profesionales con ocasión de la recolección del material. Conclusión: Todos los gaps presentaron relación negativa entre lo esperado y lo percibido expresando la insatisfacción con relación al servicio.

RESUMO Objetivo: Analisar a percepção de mulheres acerca da qualidade do serviço de colpocitologia oncótica em Belém (PA). Método: Estudo quantitativo-descritivo com 400 mulheres que realizaram o exame de colpocitologia oncótica na rede pública de saúde, utilizando o modelo Service Quality (SERVQUAL). Utilizou-se o Alpha de Cronbach para medir a confiabilidade da escala, e os dados foram analisados pelos quartis dos gaps das dimensões: tangibilidade, responsividade, confiabilidade, credibilidade e empatia. Resultados: A dimensão credibilidade, correspondente ao conhecimento e cortesia dos funcionários, apresentou maior grau de importância para as usuárias, e a empatia, que corresponde à preocupação demonstrada pelos funcionários com as necessidades das mulheres, exibiu menor grau. Os gaps negativos mais expressivos dizem respeito à estrutura dos serviços e a atitude dos profissionais por ocasião da coleta de material. Conclusão: Todos os gaps apresentaram relação negativa entre o esperado e o percebido expressando a insatisfação em relação ao serviço.

Programa multicéntrico de cribado de cáncer colorrectal en Chile / Results of a multicentric colorectal cancer screening program in Chile

Background: Colorectal Cancer Screening Programs (CRCSP) are widely accepted in developed countries. Unfortunately, financial restrictions, low adherence rate and variability on colonoscopy standardization hamper the implementation of CRCSP in developing countries. Aim: To analyze a multicentric pilot model of CRCSP in Chile. Material and Methods: A prospective model of CRCSP was carried out in three cities, from 2012 to 2015. The model was based on CRC risk assessment and patient education. Health care personnel were trained about logistics and protocols. The endoscopy team was trained about colonoscopy standards. A registered nurse was the coordinator in each center. We screened asymptomatic population aged between 50 and 75 years. Immunological fecal occult blood test (FIT) was offered to all participants. Subjects with positive FIT underwent colonoscopy. Results: A total of 12,668 individuals were enrolled, with a FIT compliance rate of 93.9% and 2,358 colonoscopies were performed. Two hundred and fifty high-risk adenomas and 110 cancer cases were diagnosed. One patient died before treatment due to cardiovascular disease, 74 patients (67%) underwent endoscopic resection and 35 had surgical treatment. Ninety one percent of patients had an early stage CRC (0-I-II). Among colonoscopy indicators, 80% of cases had an adequate bowel preparation (Boston > 6), cecal intubation rate was 97.7%, adenoma detection rate was 36.5%, and in 94.5% of colonoscopies, withdrawal time was adequate (> 8 min). Conclusions: This CRCS pilot model was associated to a high rate of FIT return and colonoscopy quality standards. Most CRCs detected with the program were treated by endoscopic resection.

Sangue oculto nas fezes: uma comparação entre os métodos químico e imunoquímico / Fecal occult blood: a comparison of chemical and immunochemical tests

ABSTRACT BACKGROUND: Colorectal bleeding is a warning sign that may be identified by fecal occult blood testing. A positive fecal occult blood test result requires a subsequent colonoscopy, a costly and invasive examination. Therefore, the use of diagnostic tests with optimal sensitivity and specificity is warranted. In this study, we evaluated four different fecal occult blood tests in 176 patients undergoing colonoscopy and compared their results. OBJECTIVE: To assess the sensitivity, specificity and predictive values of chemical and immunochemical fecal occult blood tests in patients undergoing colonoscopy and to evaluate the degree of concordance between the tests and colonoscopy. METHODS: Patients with indications for colonoscopy also underwent fecal occult blood testing by chemical (toluidine test) and immunochemical methods, employing three commercially available kits. Based on the endoscopic findings, the colonoscopy was rated as positive or negative for colorectal bleeding. The degree of concordance between the fecal occult blood tests and the colonoscopy was evaluated by the kappa index. RESULTS: Forty-four (25%) colonoscopies were categorized as positive for colorectal bleeding. The toluidine test presented lower concordance than the immunochemical tests, which showed moderate concordance with the colonoscopy. The toluidine test had the least sensitivity, specificity, and positive and negative predictive values. CONCLUSION: The immunochemical fecal occult blood tests showed greater sensitivity, specificity and predictive values in detecting colorectal bleeding. The immunochemical tests had superior indexes of agreement with colonoscopy compared to the toluidine test.

RESUMO CONTEXTO: O sangramento colorretal é considerado um sinal de alarme e não deve ser ignorado. O resultado positivo de um teste de pesquisa de sangue oculto nas fezes (PSOF) requer investigação complementar com colonoscopia, exame invasivo e de alto custo. Justifica-se, portanto, a aplicação de um teste diagnóstico mais sensível e específico. No presente estudo, foram avaliados quatro diferentes testes de PSOF em 176 pacientes submetidos à colonoscopia e seus resultados foram comparados. OBJETIVO: Avaliar a sensibilidade, a especificidade e os valores de predição dos testes químico e imunoquímico de PSOF em pacientes submetidos à colonoscopia e avaliar o grau de concordância entre os testes de PSOF e a colonoscopia. MÉTODOS: Pacientes com indicação de realizar colonoscopia foram submetidos também à PSOF pelo método químico (o-toluidina) e pelo método imunoquímico, empregando três kits comerciais disponíveis no mercado. Fundamentado nos achados endoscópicos, a colonoscopia foi categorizada em positiva ou negativa, de acordo com a possível fonte de sangramento colorretal. O grau de concordância entre os testes de PSOF foi avaliado pelo índice kappa. RESULTADOS: Quarenta e quatro (25%) colonoscopias foram categorizadas como positivas quanto à fonte de sangramento colorretal. O teste da o-toluidina mostrou menor concordância que os testes imunoquímicos, os quais apresentaram moderada concordância com a colonoscopia. O teste da o-toluidina revelou menor sensibilidade, especificidade, valor preditivo positivo e valor preditivo negativo. CONCLUSÃO: Os testes imunoquímicos revelaram maior sensibilidade, especificidade e valores de predição na detecção de sangramento colorretal. Os testes imunoquímicos apresentaram melhores índices de concordância com a colonoscopia, quando comparados ao teste da o-toluidina.

Qualidade em colonoscopia e taxa de detecção de adenoma no Centro-Oeste do Brasil / Adenoma detection rate evaluation and quality of colonoscopy in the center-west region of brazil

ABSTRACT BACKGROUND: Colorectal cancer is the third commonest cancer in men and the second in women worldwide. Peculiarities of its evolution allow secondary prevention measures through colonoscopy, with high diagnostic and therapeutic capacity. In this context, the quality indicators of the procedure become important, among them the adenoma detection rate (ADR). OBJECTIVE: To relate the ADR in a medium risk population subjected to colonoscopy with sociodemographic, technical and histopathological indicators. METHODS: This was a descriptive, observational and retrospective study whose data were collected from medical records of colonoscopy exams with the indication of colorectal cancer screening or prevention in the period from August to October 2016. RESULTS: A total of 436 exams were included for analysis. Female sex represented 66.3% with 289 patients versus 33.7% for men. Patients aged between 50 and 59 years were 223 (51.1%) and those between 60 and 75 years were 213 (48.9%). In 99 exams (22.7%) chromoscopy was used, and 420 patients (96.3%) were adequately prepared. There were 118 patients with adenomas, resulting in an overall ADR of 27.1%. The ADR for men was 30.6% and 25.3% for women. Patients between 60 and 75 years old had a significantly higher ADR (31.9%, compared to 22.4% of the younger ones). Examinations in which chromoscopy was used also presented higher ADR. CONCLUSION: The ADR values found for the population of the studied region were compatible with internationally established goals. Continuous evaluation of the ADR may yield interventions aimed at improving quality standards for colonoscopy and promote better prevention of colorectal cancer.

RESUMO CONTEXTO: O câncer colorretal é o terceiro câncer mais incidente em homens e o segundo em mulheres em todo o mundo. Peculiaridades de sua evolução permitem medidas de prevenção secundária através da colonoscopia, com alta capacidade diagnóstica e terapêutica. Nesse contexto os indicadores de qualidade se tornam importantes, dentre eles a taxa de detecção de adenomas (TDA). OBJETIVO: Avaliar a taxa de detecção de adenomas em uma população de médio risco submetida a colonoscopia, relacionando-a a indicadores sociodemográficos, técnicos e histopatológicos. MÉTODOS: Trata-se de estudo descritivo, observacional e retrospectivo cujos dados foram coletados de registros e prontuários médicos de exames de colonoscopia com indicação de rastreamento ou prevenção do câncer colorretal no período de agosto a outubro de 2016. RESULTADOS: Foram incluídos 436 laudos de exames para análise de dados. O sexo feminino representou 66,3% com 289 pacientes contra 33,7% de homens. Os pacientes entre 50 e 59 anos de idade foram 223 (51,1%) e 213 entre 60 a 75 anos (48,9%). Em 99 exames (22,7%) foi feito uso de cromoscopia e 420 exames (96,3%) tiveram preparo adequado. Cento e dezoito pacientes tiveram adenomas, resultando em uma TDA geral no serviço de 27,1%. A TDA para homens foi de 30,6% e 25,3% para mulheres. Os pacientes entre 60 e 75 anos tiveram uma TDA significativamente maior (31,9%, contra 22,4% dos mais jovens). Exames em que foi feito uso cromoscopia também apresentaram maior TDA. CONCLUSÃO: Os valores de TDA encontrados podem validar o uso de metas estabelecidas mundialmente para a população da região estudada e sua progressão temporal pode propor medidas para o aumento dessa taxa.

Control de daño de extremidad pélvica en lesión compleja del pie: Reporte de un caso / Pelvic limb damage control following a complex foot injury: Case report

Las lesiones de la articulación tarsometatarsal (Lisfranc) son producidas en accidentes automovilísticos en más de 20% de los casos, siendo poco común este tipo de trauma y su reducción ha sido reportada en 50% de los casos de manera cerrada. Un paciente masculino de 18 años de edad electricista participa en trauma de alta energía, presentando fractura luxación de Lisfranc expuesta de pie izquierdo grado III B Gustilo y Anderson, siendo sometido a lavado y desbridamiento quirúrgicos, reducción abierta y fijación interna y cobertura cutánea inmediata. Con el tratamiento estricto y los cuidados de las lesiones ortopédicas severas, la proporción de las complicaciones secundarias pueden disminuir. El tratamiento de las lesiones severas de las extremidades incluyendo las óseas combinadas con la de los tejidos blandos (piel, tejido subcutáneo, fascias, uniones músculo-tendinosas, ligamentos, periostio y estructuras neurovasculares), deben seguir un protocolo multidisciplinario: desbridamiento extenso de tejido no viable, erradicación de infecciones y reconstrucción o cobertura de tejidos. Por lo que todo cirujano ortopedista debe tener conocimiento básico del mismo, teniendo vital importancia el manejo adecuado, la técnica precisa para cada caso y el momento preciso para su solución.

More than 20% of the tarsometatarsal joint injuries (Lisfranc injuries) occur during motor vehicle accidents. This kind of trauma is infrequent and in 50% of cases closed reduction is used. A 18 year-old male patient sustained a high-energy trauma resulting in a Gustilo and Anderson III B open Lisfranc fracture dislocation of the left foot. Surgical debridement, open reduction and internal fixation, and immediate skin coverage were performed. The secondary complication rate may decrease with stringent treatment adherence and proper care of severe orthopedic injuries. Treatment of the latter, including bone and soft tissue injuries (skin, subcutaneous tissue, fascias, musculotendinous junctions, ligaments, periosteum, and neurovascular structures) should follow a multidisciplinary protocol: extensive debridement of nonviable tissue, eradication of infections, and tissue reconstruction or coverage. Thus, any orthopedic surgeon should possess basic knowledge of this protocol. Proper management, using the right technique in each case, and the right timing of treatment are of the utmost importance.

Conocimiento de médicos de un Hospital Universitario de Buenos Aires respecto de las recomendaciones de vigilancia colonoscópica luego del hallazgo de un pólipo colónico: estudio de corte transversal / Knowledge of physician that work in a University Hospital of Buenos Aires about the recommendations of colonoscopic surveillance after the discovery of a colonic polyp: cross sectional study

Antecedentes: los pacientes con pólipos colónicos suelen ser sobre vigilados, lo que los expone a riesgos innecesarios y aumenta las dificultades para satisfacer las demandas genuinas de dicha prestación. Objetivo: documentar el conocimiento sobre recomendaciones de vigilancia colonoscópica en un Hospital Universitario Privado de Buenos Aires. Material y métodos: estudio de corte transversal a través de un cuestionario autoadministrado con varios escenarios clínicos. Fueron invitados todos los profesionales con alta carga de atención programada y todos los residentes de medicina familiar y comunitaria (n=94; tasa de respuesta75,5%).Resultados: predominó el error por sobre vigilancia (20% para pólipos hiperplásicos; 47% para adenomas tubulares de 6mm sin displasia y56% para un adenoma tubular de 12 mm con un foco de displasia de alto grado).Conclusiones: las respuestas fueron mejores que las reportadas por la bibliografía, con predominio del error por sobre vigilancia.

Background: Patients with colonic polyps usually oversurveilled over-monitored, which exposes them to unnecessary risks and increases the difficulties to meet the genuine demands of colonoscopyt. Objective: To document the knowledge about current recommendations of colonoscopic surveillance in a University Associated Private Hospital in Buenos Aires. Methods: cross-sectional study through a self-administered questionnaire with several clinical scenarios. All professionals with a high burden of scheduled care and all family medicine residents were invited (n = 94, response rate: 75.5%). Results: over-surveillance error predominated (20% for hyperplastic polyps, 47% for a 6mm tubular adenomas without dysplasia and 56% for a 12 mm tubular adenoma with a focus of high-grade dysplasia). Conclusions: The responses were better than those reported in the literature. Over-surveillance error was the most frecuently documentated.

La colonoscopia en la pesquisa de cáncer colorrectal / Colorectal cancer screening with colonoscopy

El cáncer colorrectal representa una de las primeras causas de muerte por cáncer en todo el mundo y también en la Argentina. En los últimos años la pesquisa de cáncer de colon ha cobrado gran importancia y se ha postulado a la colonoscopia como el patrón de oro. En esta revisión resumimos las evidencias de este método poniendolo en contexto con las complicaciones y desventajas.

Colorectal cancer is one of the leading causes of cancer death worldwide and also in Argentina. In the past few years colorectal cancer screening has become more popular and colonoscopy has been postulated as the gold standard. In this review we analyzed the evidence supporting this method in contrast with its complications and disadvantages.

Colonoscopias realizadas por médicos residentes em hospital universitário: análise consecutiva de 1000 casos / Colonoscopies performed by resident physicians in a university teaching hospital: a consecutive analysis of 1000 cases

RACIONAL: A colonoscopia tem indicação para diagnóstico em pacientes sintomáticos e é eficaz no rastreamento e vigiância de pacientes assintomáticos. Tem potencial terapêutico em diversas situções, principalmente na remoção das lesões polipóides. A proficiência e a competência do endoscopista é o esteio para o sucesso da colonoscopia diagnóstica e terapêutica. OBJETIVO: Analisar as indicações, os achados diagnósticos, e as complicações de colonoscopias realizadas por médicos residentes em um hospital universitário. MÉTODOS: Foram avaliadas 1.000 colonoscopias consecutivas realizadas por residentes de quarto ano, sob supervisão direta de colonoscopistas experientes. Foram obtidas informações sobre os dados demográficos dos pacientes, o preparo intestinal, as indicações para o procedimento, o sucesso do procedimento, os achados diagnósticos e as complicações. RESULTADOS: Foram examinados total de 596 (59,6%) mulheres e 404 (40,4%) homens. A idade variou de três a 99 anos (média 53,8). O preparo intestinal foi realizado com solução de manitol a 10% em 978 pacientes (97,8%), sendo considerada adequada em 97,6% dos casos. Principais indicações foram: diagnóstico (56,4%), terapêutica (9,6%), rastreamento (17,3%) e vigilância (22%). Taxas de intubação do ceco e válvula ileocecal foram 90,3 e 58,6%, respectivamente. A colonoscopia foi normal em 45,8% dos casos. O diagnóstico mais comum foi diverticulose (18,5%), seguido por pólipos (17%) e neoplasias (6,8%). Achados consistentes com um processo inflamatório foram identificados em 122 pacientes (12,2%) e anomalias vasculares foram detectadas em 11 pacientes (1,1%). Outros diagnósticos representaram 3,9% dos casos. Houve dois casos (0,2%) de complicações (hematoma e hemorragia submucosa), ambos após polipectomia, sem necessidade de intervenção cirúrgica. CONCLUSÃO: Os residentes sob supervisão e orientação de especialistas podem realizar colonoscopias com excelente resultado, baixo índice de complicações e com dados finais comparáveis aos obtidos por endoscopistas experientes.

BACKGROUND: Proficiency and competence of endoscopists is perhaps the mainstay of successful diagnostic and therapeutic colonoscopy. AIM: To analyze indications, diagnostic findings, and complications of colonoscopies performed by resident physicians in a university teaching hospital. METHODS: Were analyzed 1,000 colonoscopies consecutively performed by fourth-year residents under direct supervision of experienced colonoscopists. Information on patients' demographic data, bowel preparation, indications for the procedure, success of the procedure, diagnostic findings, and complications were obtained. RESULTS: A total of 596 (59.6%) female and 404 (40.4%) male patients were examined. Age ranged from 3 to 99 years (mean 53.8 years). Bowel preparation was performed with 10% mannitol solution in 978 patients (97.8%), being considered appropriate in 97.6% of cases. Main indications were: diagnosis (56.4%), therapy (9.6%), screening (17.3%), and surveillance (22%). Cecal and ileocecal valve intubation rates were 90.3 and 58.6%, respectively. Colonoscopy was normal in 45.8% of cases. The most common diagnosis was diverticulosis (18.5%), followed by polyps (17%) and malignancies (6.8%). Findings consistent with an inflammatory process were identified in 122 patients (12.2%) and vascular abnormalities were detected in 11 patients (1.1%). Other diagnoses accounted for 3.9% of cases. There were two cases (0.2%) of complications (submucosal hematoma and bleeding), both after polypectomy, with no need for surgical intervention. CONCLUSION: The residents under supervision and guidance of specialists can perform colonoscopies with excellent success and low complication rates, with final results comparable to those achieved by fully trained endoscopists.

Estandares de calidad en videocolonoscopía en un centro de formación de especialistas / Quality standards in colonoscopy in a training center

Antecedentes: La videocolonoscopía es el método por excelencia para el estudio del colon, realizada por coloproctólogos y médicos residentes en formación debe cumplir con determinados criterios para alcanzar un óptimo resultado, con seguridad para el paciente. Objetivos: Analizar la calidad de la colonoscopia realizada por coloproctólogos en un centro de formación de residentes, evaluando la idoneidad del residente al finalizar el programa. Pacientes y Método: Se analizó retrospectivamente 1.452 videocolonoscopía realizadas en el Servicio de Coloproctología del Hospital Británico de mayo de 2009 y junio de 2010. Evaluando las indicaciones del estudio, con registro de la exploración completa de colon, el porcentaje de preparación colónica óptima, rango de detección y extracción de adenomas, y tiempo de retiro. Cada uno de estas variables fueron consideradas para su análisis en forma independiente en médicos especialistas y médicos en formación. Comparando cada uno de los indicadores con los estándares internacionales de calidad publicados. Resultados: Se realizaron 620 procedimientos a mujeres y 832 a hombres. La indicación preponderante fue por screening (69%) seguida por enfermedad diverticular (13,9%), antecedentes previa de pólipos (6,8), y control alejado de cirugía colónica (6,9%), logrando la exploración completa en el 96,6% (n=1395). Los residentes lograron la llegada a ciego en el 82,5% de los procedimientos, con el 100% de fotodocumentación del nivel alcanzado. El tiempo de llegada hasta completar la exploración fue de 9 minutos para los staff y de 14 minutos para los residentes. En tanto que el tiempo de retirada fue de 8 minutos y de 11 respectivamente. La preparación colónica fue muy buena 20,18%, buena 63,42%, regular 11,7%, mala 4,70%. El total de pólipos hallados en la muestra fue de 14%. No hemos tenido complicaciones durante el procedimiento ni posterior al mismo...

Background: The videocolonoscopia is the excellent method for the study of the colon, by coloproctologos and resident physicians in training must meet certain criteria to achieve an optimal result, patient safety. Objectives: Analyze the quality of colonoscopy by coloproctologos in a training center for residents, assessing the adequacy of the resident at the end of the program. Patients and Techniques: A retrospective study conducted in 1452 videocolonoscopia. Coloproctology Service of the British Hospital May 2009 and June 2010. Evaluating the indications of the study, recording the complete scanning of the colon, the percentage of optimal colonic preparation, range of detection and removal of adenomas, and withdrawal time. Each of these variables were considered for analysis as independent specialists and doctors in training. Comparing each of the indicators with international quality standards published. Results: We performed 620 procedures and 832 women and men. The predominant indication was for screening (69%) followed by diverticular disease (13.9%), previous history of polyps (6.8), and control away from colon surgery (6.9%), achieving the full scan in the 96.6% (n = 1395). Residents arrived in blind achieved in 82.5% of procedures, with 100% of the level reached photodocumentation. The time of arrival to complete the scan was 9 minutes for the staff and 14 minutes for residents. While the withdrawal time was 8 minutes and 11 respectively. The colonic preparation was very good 20.18%, 63.42% good, fair 11.7%, 4.70% bad. The total number of polyps found in the sample was 14%. We had no complications during the procedure or after it. Conclusions: The videocolonoscopia is an essential tool for the detection of colonic disease...

Análisis conceptual de 800 colonoscopías realizadas en un hospital general de agudos / Conceptual analysis of 800 colonoscopies performed in a general acute care hospital

Introducción: Se evalúan 800 colonoscopías del HZGA "Manuel Belgrano", realizadas conjuntamente por endoscopistas clínicos y cirujanos. Material y Método: Se trata de un estudio retrospectivo que abarca el período comprendido entre el 21/10/1988 y el 13/8/2009. Se consideraron distintas variables como indicación, diagnóstico, complicaciones, etc. que se confrontan con la literatura. Resultados: La indicación mas frecuente fue sangrado intestinal bajo (24,5 por ciento). Se alcanzó el ciego en el 73,62 por ciento de los casos. En 34,65 por ciento de los casos el estudio fue normal. Se registraron 935 diagnósticos. La patología mas frecuente fue la enfermedad diverticular (22,35 por ciento). Las complicaciones alcanzaron el 0,37 por ciento. Discusión: Se pretende demostrar la factibilidad y beneficios de llevar a cabo este tipo de prestaciones en un hospital de mediana complejidad, con un equipo multidisciplinario de profesionales dentro de los márgenes de seguridad y eficiencia reconocidos por distintos centros. Se proponen algunas recomendaciones que surgen de esta experiencia que consideramos de suma utilidad institucional y para la comunidad de influencia.

Background: 800 colonoscopies were evaluated in the HZGA "Manuel Belgrano" carried out jointly by clinical gastroenterologists and surgeons. Methods: This is a retrospective study covering the period from 21/10/1988 and 08/13/2009. Variables were considered as an indication, diagnosis and complications. They are confronted with the literature. Results: The most common indication was lower intestinal bleeding (24.5 per cent). The cecum was reached in 73.62 per cent of cases. In 34.65 per cent of the cases the study was normal. There were 935 diagnoses. The most common pathology was diverticular disease (22.5 per cent). Complications occurred in 0.37 per cent. Discussion: It aims to demonstrate the feasibility and benefits of conducting this type of features in a medium complexity hospital, a multidisciplinary team of professionals within the margin of safety and efficiency recognized by different centers. Some recommendations that emerge from this experience that we think is very useful for institutional and community influence.

Avaliação do desempenho da colonografia tomográfica computadorizada (colonoscopia virtual) no diagnóstico de pólipos colorretais / Evaluation of computed tomographic colonography for detection of colorectal polyps

RACIONAL: A colonografia tomográfica computadorizada tem sido proposta como teste substituto da colonoscopia para o diagnóstico de pólipos colorretais em programas de rastreamento de câncer de intestino grosso. OBJETIVO: Avaliar o desempenho da colonografia tomográfica computadorizada na detecção de pólipos colorretais, considerando a colonoscopia como padrão-ouro. MÉTODOS: Foram estudados 20 pacientes com alto risco para neoplasia colorretal (14 homens e 6 mulheres com idades médias de 55 e 59 anos, respectivamente). A colonografia tomográfica computadorizada foi realizada até 3 horas antes da colonoscopia. Um cateter com balão foi introduzido no reto com insuflação dos cólons e do reto com ar ambiente até que fosse obtida distensão satisfatória dos mesmos. Para otimizar a distensão colônica, minimizar artefatos decorrentes da peristalse e diminuir o espasmo, foram administrados 20 mg de hioscina intravenosa imediatamente antes do exame radiológico. RESULTADOS: A imagem radiológica do cólon foi considerada de qualidade satisfatória em todos os casos. A colonoscopia detectou o total de 85 pólipos em 19 dos 20 pacientes (95 por cento). Todos os pólipos observados foram removidos e encaminhados para exame anatomopatológico. A colonografia tomográfica computadorizada identificou 8 dos 10 pólipos com diâmetros > 10 mm (80 por cento), 2 dos 19 com diâmetro entre 5 e 9 mm (18,2 por cento), e apenas 1 dos 53 <5 mm (9,1 por cento). Dos 43 pólipos adenomatosos, 17 eram > 5 mm. Destes, 8 (47 por cento) foram corretamente identificados pela colonografia tomográfica computadorizada. Nenhuma das neoplasias com diâmetros <5mm foi observada no exame radiológico. Dezenove dos 20 pacientes (95 por cento) submetidos a ambos os testes prefeririam submeter-se a nova colonoscopia, ao invés de uma colonografia tomográfica computadorizada, na eventualidade hipotética de ser necessário repetir um dos dois testes. CONCLUSÃO: Para pacientes com risco aumentado...

BACKGROUND: Computed tomographic colonography has been proposed for detection of colorectal polyps instead of colonoscopy in colorectal cancer screening programs. AIM: To evaluate the performance of computed tomographic colonography in the detection of colorectal polyps with colonoscopy used as the gold standard. METHODS: We prospectively studied 20 patients at high risk for colorectal neoplasia (14 men and 6 women; mean age, 55 years and 59 years). Computed tomographic colonography was performed immediately before colonoscopy. We inserted a rectal balloon catheter and insufflated the colon with room air to the level that a good distension was observed. Twenty milligrams of hioscin was given immediately before computed tomographic imaging of the abdomen and pelvis in order to minimize the degree of smooth-muscle spasm and peristalsis and to reduce the patient's discomfort. RESULTS: Computed tomographic colonography images were considered satisfactory in all cases. Colonoscopy detected 85 polyps in 19 of 20 patients (95 percent). All the observed polyps were successfully removed and examined histologically. The radiological examination correctly identified 8 of 10 polyps 10 mm or more in diameter, 2 of 19 (18,2 percent) with 5-9 mm, and just 1 of 53 <5mm (9,1 percent). Seventeen of the 43 adenomatous polyps were > 5 mm. Eight (47 percent) were correctly identified on computed tomographic colonography. None of the neoplasias <5 mm were identified on colonography. Nineteen patients preferred colonoscopy in the event of having to repeat on of the two examinations. CONCLUSION: For the detection of colorectal polyps, computed tomographic colonography seems to be useful only when the result is positive, as the negative results of this examination cannot eliminate the presence of these lesions.

Estudio endoscópico en familiares de primer grado de pacientes operados por cáncer colorrectal / Screening colonoscopy among first degree relatives of patients with colorectal carcinoma

Background: First degree relatives of patients with colorectal carcinoma are at a higher risk of having the disease than the general population. Therefore, they should be subjected to screening colonoscopy. Aim: To assess the effectiveness of colonoscopy among first degree relatives of patients with colorectal carcinoma. Material and methods: A free colonoscopy was offered to first degree relatives of patients operated on for colorectal cancer between 1998 and 2000. As inclusion criteria, subjects had to be asymptomatic, older than 40 years or less than 10 years younger than the index case. Each subject was contacted twice, inviting him/her to have a colonoscopy performed. Results: Two hundred forty three relatives were contacted for the study and in 76, a colonoscopy was performed. Among the latter, a neoplasm was found in 13 (17 percent): One adenocarcinoma and 12 adenomas. Three of these lesions were located in the right colon. The main reason given by the 176 subjects that did not agree to have a colonoscopy was lack of interest. Conclusions: Screening colonoscopy is effective to detect adenoma and adenocarcinomaamong first degree relatives of patients with colorectal carcinoma, however only 31 percent of all potential relatives agreed to undergo a colonoscopy.

Evaluación prospectiva de la seguridad y tolerancia de los procedimientos colonoscópicos en pacientes pediátricos / Prospective evaluation of safety and tolerance of colonoscopy in children

Background: Colonoscopy is a well established diagnostic and therapeutic procedure in pediatrics. Aim: To evaluate colon preparation alternatives for colonoscopy or sigmoidoscopy, type of sedation, clinical indications and findings. Patients and methods: Prospective study of 123 children referred for colonoscopy. Demographic data, type of colon preparation, sedation, type of endoscope and endoscopic results were obtained. The following day, a phone interview was carried out inquiring about duration, quality and adverse effects of the sedation and procedure. Results: Seventy one boys (58%) and 52 girls (42%) with a mean age of 6.7±4.4 years, were recruited. The main indication was lower gastrointestinal bleeding (71%). The different colon preparations produced elimination of clear liquid stools in 50%, non transparent liquid in 23%, semi liquid in 22% and solid in 6% of the patients. Most common side effects were abdominal distension (20%) and nausea (16.8%). The most commonly used drugs were midazolam (76%) and demerol (43%). The average duration of the procedure was 18.3 minutes (range: 4-50). The most common findings were rectal polyps (18.7%) and hemorrhagic colitis (14.6%). In 77% of cases, the sedation was considered very good or good. Colon visualization was described as very good (51%) or good (36%). Seventy three percent of children had complete amnesia. The most common adverse effect was vomiting (7.5%). Conclusion: Lower endoscopies are feasible procedures to carry out in children, in an ambulatory basis, with intravenous sedation and minimum adverse effects.