The powerless extremes: Balancing altruism and individualism in environmental policy formulation / Los extremos impotentes: balance de altruismo e individualismo en la formulación de políticas ambientales

RESUMEN El objetivo es proponer un esquema conceptual que sea útil para interpretar las implicaciones económicas y ambientales que tienen las organizaciones sociales basadas en un paradigma individualista o altruista. Tras una revisión de literatura y breve recuento histórico de estos paradigmas, se concluye que son las organizaciones complejas y equilibradas las que tienen mayor propensión a desarrollar intercambios de cooperación altruistas. La implicación para las políticas ambientales contemporáneas es que, además de los mecanismos de mercado, es posible complementarlas con otros esquemas basados en mecanismos comunitarios, siempre y cuando exista un contexto propicio para implementarlo.

ABSTRACT The objective is to propose a practical conceptual scheme to interpret social organizations' economic and ecological implications based on an individualistic or altruistic paradigm. After a literature review and a brief historical analysis of these paradigms, we conclude that complex and balanced organizations have the most remarkable propensity to develop altruistic cooperation exchanges. The implication for contemporary environmental policies is the possibility of complementing market mechanisms with community-based schemes in a favorable context.

Características y supervivencia de adultos con cáncer diferenciado de tiroides en un hospital de Perú / Characteristics and survival of adults with differentiated thyroid cancer in a Peruvian hospital

RESUMEN El propósito del estudio fue describir las características clínicas, anatomopatológicas, tratamiento y supervivencia de los pacientes con cáncer de tiroides diferenciado. Se realizó un estudio de cohorte retrospectiva con datos de 150 pacientes de un hospital peruano entre los años 2010 al 2020. Se describieron las características y supervivencia (método de Kaplan-Meier). La media de edad fue 48,3 años, 130 (86,7%) fueron mujeres y el tipo histológico más frecuente fue el papilar 94,6%. El 74,2% tenían estadio TNM I, 70,7% tiroidectomía total y 68,7% recibió yodo radiactivo. La supervivencia global a los 5 años fue 89,3%, siendo menor en aquellos con estadio TNM IV y mayor en los que usaron yodo radiactivo. En conclusión, en un hospital de Cusco, el cáncer diferenciado de tiroides fue más frecuente en mujeres y la supervivencia fue menor en comparación con reportes de otros países.

ABSTRACT This study aimed at studying the clinical and anatomopathological characteristics, treatment and survival of patients with differentiated thyroid cancer. A retrospective cohort study was conducted with data from 150 patients from a Peruvian hospital between the years 2010 to 2020. Characteristics and survival (Kaplan-Meier method) were described. The mean age was 48.3 years, 130 participants (86.7%) were women and the most frequent histologic type was papillary 94.6%. Of the participants, 74.2% had TNM stage I, 70.7% had total thyroidectomy and 68.7% received radioactive iodine. Overall survival at 5 years was 89.3%, being lower in those with TNM stage IV and higher in those who used radioactive iodine. In conclusion, in a hospital in Cusco, differentiated thyroid cancer was more frequent in women and survival was lower compared to reports from other countries.

Fatores preditivos da permanência em uma Unidade de Queimados / Factors predicting burn unit length-of-stay

Introdução: A taxa de mortalidade em pacientes queimados diminuiu significativamente, tornando importante avaliar outros desfechos, como o tempo de internação, que aumenta a morbidade física e psicológica, o risco de infecção hospitalar e os custos financeiros. O objetivo deste estudo é analisar a relevância de vários fatores no tempo de internação na Unidade de Queimados. Método: Foram incluídos neste estudo 711 pacientes admitidos entre 2011 e 2020 na Unidade de Queimados do Hospital de São José, Centro Hospitalar Lisboa Central, Lisboa, Portugal. Os dados coletados foram analisados utilizando o PSPP para Windows. Resultados: Os pacientes eram predominantemente do sexo masculino, com idade média de 54 anos. O tempo médio de permanência hospitalar foi de 29 dias. Os fatores que prolongaram a estadia hospitalar foram relacionados à gravidade da queimadura, ao número de cirurgias e ao tempo decorrido até a primeira cirurgia, valores laboratoriais alterados tanto no perfil hematológico quanto químico durante a hospitalização, e a presença e o número de infecções documentadas. Conclusão: Existem fatores potencialmente modificáveis que infiuenciam o tempo de permanência hospitalar. Nosso estudo nos permite concluir que o tempo decorrido até a primeira intervenção cirúrgica e a presença e o número de infecções documentadas prolongam significativamente esse desfecho, e ênfase deve ser dada à implementação de medidas que favoreçam a intervenção cirúrgica precoce e o controle rigoroso de infecções.

Introduction: Burn patients' mortality rate has decreased significantly, making it important to evaluate other outcomes, such as length-of-stay, which increases physical and psychological morbidity, risk of nosocomial infection, and financial costs. The objective of this study is to analyze the relevance of several factors in the Burn Unit length-of-stay. Material and Methods: 711 patients were included in this study, admitted between 2011 and 2020 to the Burn Unit at São José Hospital, Centro Hospitalar Lisboa Central, Lisbon, Portugal. Collected data was analyzed using PSPP for Windows. Results: Patients included in the study were predominantly males, with a mean age of 54 years. The mean length of stay was 29 days. The factors that prolonged in-hospital stay were those related to the severity of the burn, the number of surgeries and the time elapsed until the first one, altered laboratory values in both hematologic and chemistry profile during the hospitalization, and the presence and number of documented infections. Conclusion: There are potentially modifiable factors that influence length-of-stay. Our study allows us to conclude that the time elapsed until the first surgical intervention and the presence and number of documented infections significantly prolong this outcome, and emphasis should be given to the implementation of measures that favor early surgical intervention and strict infection control.

Clinical outcomes prediction in kidney transplantation by use of biomarkers from hypothermic machine perfusion

ABSTRACT Purpose The clinical outcomes of kidney transplantation from deceased donors have seen significant improvements with the use of machine perfusion (MP), now a standard practice in transplant centers. However, the use of perfusate biomarkers for assessing organ quality remains a subject of debate. Despite this, some centers incorporate them into their decision-making process for donor kidney acceptance. Recent studies have indicated that lactate dehydrogenase (LDH), glutathione S-transferase, interleukin-18, and neutrophil gelatinase-associated lipocalin (NGAL) could predict post-transplant outcomes. Materials and Methods Between August 2016 and June 2017, 31 deceased-donor after brain death were included and stroke was the main cause of death. Pediatric patients, hypersensitized recipients were excluded. 43 kidneys were subjected to machine perfusion. Perfusate samples were collected just before the transplantation and stored at -80ºC. Kidney transplant recipients have an average age of 52 years, 34,9% female, with a BMI 24,6±3,7. We employed receiver operating characteristic analysis to investigate associations between these perfusate biomarkers and two key clinical outcomes: delayed graft function and primary non-function. Results The incidence of delayed graft function was 23.3% and primary non-function was 14%. A strong association was found between NGAL concentration and DGF (AUC=0.766, 95% CI, P=0.012), and between LDH concentration and PNF (AUC=0.84, 95% CI, P=0.027). Other perfusate biomarkers did not show significant correlations with these clinical outcomes. Conclusion The concentrations of NGAL and LDH during machine perfusion could assist transplant physicians in improving the allocation of donated organs and making challenging decisions regarding organ discarding. Further, larger-scale studies are required.

Transplante dentário autólogo: revisão integrativa / Dental autologous transplantation: an integrative literaturereview / Trasplante dental autólogo: una revisión integradora de la literatura

Introdução:O transplante autólogo dentário é uma técnica cirúrgica na qual há a transposição de um dente para uma nova área receptora, no mesmo paciente. É viável para o tratamento de ausências e impactações dentárias. O método apresenta benefícios como manutenção de periodonto vital, volume ósseo alveolar e papila dentária, possibilidade de movimentação dentária por forças ortodônticas ou fisiológicas e estética favorável.Objetivo:Promover uma revisão de literatura sobre o transplante dentário autólogo, visando relatar as principais indicações, benefícios e contraindicações da técnica, além de descrever o protocolo cirúrgico e os fatores que influenciam no sucesso, de modo a orientar o manejo clínico.Metodologia:Para esse fim, as bases de dados analisadas foram PUBMED, LILACS e SCIELO, sendo obtidos artigos de Revisão Sistemática e Metanálises dos anos de 2018 a 2023.Resultados:O autotransplante apresenta taxas de sobrevida entre 93% e 100% e taxas de sucesso entre 89,4% e 96,6%, o que depende dos fatores relacionados ao paciente, ao dente doador, à área receptora e à técnica cirúrgica.Dentes anteriores e com ápice aberto apresentam melhores taxas de sobrevivência e sucesso em relação aos dentes posteriores e de ápice fechado, todavia não há comprovação que os demais pontos realmente influenciam diretamente no método. Conclusões:Com isso, podemos compreender que o estabelecimento de protocolos pré,trans e pós-operatório, além de esclarecimento de todos os fatores que influenciam na técnica, devem ser foco de estudos dos Cirurgiões-Dentistas, trazendo benefícios consideráveisparao manejo cirúrgico e saúde desses pacientes (AU).

Introduction:Autologous dental transplantation is a surgical technique in which there is the transposition of a tooth to a new recipient area within the same patient. It is a viable option for treating dental absenteeism and impactions. The method offers benefits such as the maintenance of vital periodontium, alveolar bone volume, and dental papilla, the possibility of dental movement through orthodontic or physiological forces, and favorable aesthetics.Objective:To promote a literature review on autologous dental transplantation, aiming to report the main indications, benefits, and contraindications of the technique, in addition to describe the surgical protocol and factors influencing success, providing guidance for clinical management.Methodology:For this purpose, the analyzed databases included PUBMED, LILACS, and SCIELO, obtaining Systematic Review and Meta-Analysesarticles from the years 2018 to 2023.Results:Autotransplantation presents survival rates between 93% and 100% and success rates between 89.4% and 96.6%, depending on factors related to the patient, the donor tooth, the recipient area, and the surgical technique. Anterior teeth with open apices present better survival and success rates compared to posterior teeth with closed apices, however, there is no conclusive evidence that other factors directly influence the method.Conclusions:Therefore, we can understand that the establishment of preoperative, intraoperative, and postoperative protocols, along with clarification of all factors influencing the technique, should be the focus of studies for Dental Surgeons, bringing significant benefits to these individuals' health (AU).

Introducción: : El trasplante autólogo dental es una técnica quirúrgica en la que se transpone un diente a una nueva área receptora, en el mismo paciente. Es viable para el tratamiento de ausencias e impactos dentales. El método presenta beneficios como mantenimiento de periodonto vital, volumen óseo alveolar y papila dental, posibilidad de movimiento dental por parte de fuerzas ortodoncias o fisiológicas y estética favorable.Objetivo: Promover una revisión de la literatura sobre el trasplante dentario autólogo, con el objetivo de reportar las principales indicaciones, beneficios y contra indicaciones de la técnica, además de describir el protocolo quirúrgico ylos factores que influyen en el éxito, con el fin de orientar el manejo clínico.Metodología: Para este fin, las bases de datos analizadas fueron PUBMED, LILACS y SCIELO, siendo obtenidos artículos de Revisión Sistemática y Metanálisis de los años 2018 a2023.Resultados: El autotrasplante presenta tasas de sobrevida entre 93% y 100% y tasa de éxito entre 89,4% y 96,6%, lo que depende de los factores relacionados con el paciente, el donante, el área receptora y la técnica quirúrgica. Los dientes anteriores y ápice abiertos presentan mejores tasas de supervivencia y éxito con respecto a los dientes posteriores y de ápice cerrado, pero no hay prueba de que los demás puntos realmente influyen directamente en el método.Conclusiones: Con eso, podemos comprender que el establecimiento de protocolos pre, intra y postoperatorio, además de esclarecimiento de todos los factores que influyen en la técnica, deben ser foco de estudios de los CirujanosDentistas, trayendo beneficios considerables para la salud de estos individuos (AU).

Survival analysis of myasthenia gravis patients at a Referral Center in Pará, Brazil (2005-2020) / Análise de sobrevivência de pacientes com miastenia ravis em um Centro de Referência no Pará, Brasil (2005-2020)

Objective: To evaluate the profile and survival of patients diagnosed with Myasthenia Gravis, by reviewing medical records of neurological consultations at a referral service in the interior of Pará (Brazil), between 2005 and 2020. Methods: a historical, observational and retrospective cohort study. 36 participants were included. Survival analysis methods were used to identify prognostic factors for disease remission at the observation time of 36 months. The correlation between the variables and the death outcome was performed using the chi-square test. Results: Most patients were women (66.6%) and had the generalized form of the disease (86.1%). The most prevalent symptoms were: ophthalmoparesis (97.2%), fatigability (75%) and dysphagia (72.2%). Among the complications, 19.4% had myasthenic crisis. The dosage of antiacetylcholine receptor (AChR) antibody was positive in 58.3% and 69.4% underwent electroneuromyography, and 72% of them had electrodecrement. Most of the patients responded to the staggered standard treatment and achieved remission (83.3%), while 16.6% died. Survival analysis showed through Kaplan-Meier curves and Log-rank test that the variables related to poor control were male gender (p=0.01), thymus disease (p=0.02) and use of cyclosporine (p=0.02). The factors that influenced the death outcome were male gender, cyclosporine and thymectomy. Conclusion: The study showed that the evolution of people with Myasthenia Gravis over 15 years and the poor prognostic factors were equivalent to the international literature.

Objetivo: Avaliar o perfil e a sobrevida de pacientes com diagnóstico de Miastenia Gravis, por meio da revisão de prontuários de consultas neurológicas em um serviço de referência no interior do Pará (Brasil), entre 2005 e 2020. Métodos: estudo de coorte histórico, observacional e retrospectivo. 36 participantes foram incluídos. Métodos de análise de sobrevivência foram utilizados para identificar fatores prognósticos para remissão da doença no período de observação de 36 meses. A correlação entre as variáveis e o desfecho de óbito foi realizada por meio do teste qui-quadrado. Resultados: A maioria dos pacientes eram mulheres (66,6%) e apresentavam a forma generalizada da doença (86,1%). Os sintomas mais prevalentes foram: oftalmoparesia (97,2%), fadiga (75%) e disfagia (72,2%). Dentre as complicações, 19,4% tiveram crise miastênica. A dosagem do anticorpo anti-receptor de acetilcolina (AChR) foi positiva em 58,3% e 69,4% realizaram eletroneuromiografia, sendo que 72% deles apresentaram eletrodecremento. A maioria dos pacientes respondeu ao tratamento padrão escalonado e obteve remissão (83,3%), enquanto 16,6% morreram. A análise de sobrevivência mostrou através de curvas de Kaplan-Meier e teste Log-rank que as variáveis relacionadas ao mau controle foram sexo masculino (p=0,01), doença do timo (p=0,02) e uso de ciclosporina (p=0,02). Os fatores que influenciaram no desfecho óbito foram sexo masculino, ciclosporina e timectomia. Conclusão: O estudo mostrou que a evolução das pessoas com Miastenia Gravis ao longo de 15 anos e os fatores de mau prognóstico foram equivalentes à literatura internacional.

Characteristics of the out-of-hospital cardiac arrest attended by the medical emergency services in Medellín. A population-based retrospective cohort study / Características del paro cardiaco extrahospitalario atendido por operadores de ambulancias en Medellín. Estudio de cohorte retrospectivo de base poblacional

Abstract Introduction: Every year, five million people around the world experience an out-of-hospital cardiac arrest (OHCA) and less than 40 % receive any assistance before the arrival of the Emergency Medical Services (EMS). Ambulance operators (AO) take care of people experiencing an OHCA, stabilize and then transfer them. In Medellín, Colombia, there is a public AO and several private providers, but the information about an OHCA and the operational characteristics during the response to the event are limited. Objective: To estimate the incidence of OHCA and to explore the factors associated with survival after the event in Medellín city. Methods: Retrospective, population-based cohort study. All the medical records of patients experiencing an OHCA who were assessed and treated by ambulance operators, (AO) of the Emergency Medical Services (EMS) and private agencies in Medellin city were reviewed. Descriptive statistics were used for data analysis and the annual incidence of the event standardized for the general population was estimated. Potential survival-associated factors reported as OR with their corresponding 95% CI were explored. Results: A total of 1,447 patient records with OHCA between 2018 and 2019 were analyzed. The event incidence rate for the number of cases assessed was 28.1 (95 % CI 26.0-30.3) and 26.9 (95 % CI 24.929.1) cases per 100,000 inhabitants/year for 2018 and 2019, respectively; the incidence rate of treated OHCA was 2.6 (95 % CI 2.0-3.3) and 3.2 (95 % CI 2.5-4.0) per 100,000 inhabitants/year, for 2018 and 2019. Survival on arrival at hospitals of treated cases was 14.2 % (95 % CI 5.5-22.8) and 15.5 % (95 % CI 7.4-23.5) for 2018 and 2019, respectively. Conclusions: This study portrays the operating and care characteristics of the population experiencing OHCA in Medellín city. The incidence rate of the event and the survival were lower than those reported in the literature.

Resumen Introducción: Cada año, cinco millones de personas en el mundo presentan paro cardiaco prehospitalario (PCEH), de los cuales menos del 40 % reciben ayuda antes de la llegada de los sistemas de emergencia médica (SEM). Los operadores de ambulancias (OA) atienden a los que sufren un PCEH, su estabilización y posterior traslado. En Medellín, Colombia, existe un OA público y agencias privadas, pero la información acerca del PCEH y las características operacionales durante la respuesta a este evento es escasa. Objetivo: Estimar la incidencia del PCEH y explorar factores asociados a la supervivencia del evento en la ciudad de Medellín. Métodos: Estudio de cohorte retrospectivo de base poblacional. Se revisaron todos los registros médicos de pacientes que presentaron un PCEH que fueron evaluados y tratados por OA del SEM y de agencias privadas de Medellín. Se usaron estadísticos descriptivos para los datos y se estimó la incidencia anual del evento estandarizada para la población general. Se exploraron posibles factores asociados a la supervivencia, reportados como OR con su respectivos IC 95 %. Resultados: Se analizaron 1.447 registros de pacientes con PCEH presentados entre 2018 y 2019. La tasa de incidencia del evento para los casos evaluados fue de 28,1 (IC 95 % 26,0-30,3) y 26,9 (IC 95 % 24,9-29,1) casos por 100.000 habitantes/año, para 2018 y 2019, respectivamente; la tasa de incidencia del PCEH tratado fue de 2,6 (IC 95 % 2,0-3,3) y 3,2 (IC 95 % 2,5-4,0) por 100.000 habitantes/año, para 2018 y 2019. La supervivencia a la llegada a los hospitales de los casos tratados fue 14,2 % (IC 95 % 5,5-22,8) y del 15,5 % (IC 95 % 7,4-23,5) para 2018 y 2019, respectivamente. Conclusiones: Se muestra las características operativas y de atención de la población que presenta un PCEH en Medellín. La tasa de incidencia del evento y la supervivencia fueron menores a las reportadas en la literatura.

Recurrence factors in patients with cutaneous melanoma and positive sentinel lymph node treated in a single reference unit in Buenos Aires / Factores de recurrencia en pacientes con melanoma cu táneo y ganglio centinela positivo

Abstract Introduction : Although therapeutic advances have improved results of cutaneous melanoma (CM), senti nel node-positive patients still have substantial risk to develop recurrent disease. We aim to investigate prog nostic indicators associated with disease recurrence in positive-sentinel lymph node biopsy (SLNB) patients in a Latin-American population. Methods : Retrospective analysis of CM patients and positive-SLNB (2010-2020). Patients were divided into two groups: Group A (completion lymph node dissection, CLND), Group B (active surveillance, AS). Association of demographics, tumor data and SLN features with recurrence-free (RFS), distant metastases-free (DMFS) and melanoma specific (MSS) survival was analyzed. Results : Of 205 patients, 45 had a positive SLNB; 27(60%) belonged to Group A and 18(40%) to Group B. With a median follow-up of 36 months, 16 patients (12 in Group A and 4 in Group B) developed recurrent dis ease and estimated 5-yr RFS at any site was 60% (CI95%, 0.39 - 0.77) (44.5% in CLND group vs. 22% in AS group; P = 0.20). Estimated 5-yr DMFS and MSS: 65% (CI 95%, 0.44 - 0.81) and 73% (CI 95%, 0.59 - 0.89) with no differ ences between groups (p = 0.41 and 0.37, respectively). Independent predictors of poorer MSS were extranodal extension (ENE) and MaxSize > 2 mm of melanoma deposit in SLN. Factors independently associated with DMFS: Breslow depth > 2 mm, ENE, number (≥ 2) of posi tive SN and CLND status. Conclusion : Primary tumor and SN features in mela noma provide important prognostic information that help optimize prognosis and clinical management. AS is now the preferred approach for most positive-SLNB CM patients.

Resumen Introducción : Si bien los avances terapéuticos han permitido mejorar los resultados del melanoma cutáneo (MC), los pacientes con ganglio centinela positivo (BGCP) aún tienen riesgo elevado de desarrollar recurrencia de la enfermedad. Nuestro objetivo fue investigar in dicadores pronósticos asociados a dicho evento en una población latinoamericana. Métodos : Análisis retrospectivo de pacientes con MC y BGCP entre 2010-2020. Los pacientes se dividieron en 2 grupos: Grupo A (linfadenectomía terapéutica) y Grupo B (Vigilancia activa, VA). Se analizaron datos demográficos, tumorales y características del GC junto con sobrevida-libre de recurrencia (SLR), libre de metástasis a distancia (SLMD) y específica de melanoma (SEM). Resultados : De 205 pacientes, 45 presentaron BGCP; 27 (60%) perteneció al Grupo A y 18 (40%) al Grupo B. Con una mediana de seguimiento de 36 meses, 16 pa cientes (12 en Grupo A y 4 en Grupo B) desarrollaron enfermedad recurrente con una SLR a 5 años de 60% (IC95%: 0.39-0.77) (44.5% en Grupo B vs. 22% en Grupo A; P = 0.20). Las SLMD y SEM estimadas a 5 años fueron de 65% (CI 95%, 0.44 - 0.81) y 73% (CI 95%, 0.59 - 0.89) sin diferencias entre ambos grupos (p = 0.41 y 0.37, respec tivamente). Los predictores independientes de peor SEM fueron: extensión extranodal (ENE) y MaxSize > 2mm de depósito tumoral en GC. Los factores asociados de forma independiente con SLMD fueron Breslow >2mm, ENE, número (≥ 2) de GC positivos y el status (positividad) de la linfadenectomía. Conclusión : Características del tumor primario y del GC brindan información importante que ayuda a optimi zar el pronóstico y manejo clínico de los pacientes con MC. La VA es actualmente el abordaje de elección para la mayoría de los pacientes con BGCP.

Effects of furcation involvement on molar survival in periodontally treated patients / Efectos de la furcación sobre la supervivencia molar en pacientes sometidos a tratamiento periodontal

Objective: This study aims to analyze the survival time of molar tooth according to furcation involvement (FI) classification among periodontally treated patients under a supportive periodontal care program. Materials and Methods: A retrospective study was con-ducted among 77 periodontitis patients with 240 molars who had undergone periodontal therapy that were followed up with supportive periodontal therapy (SPT) for at least five years. Periodontitis patients' data were retrieved from the periodontic clinical record. The clinical parameters of all involved molars and treatment modality were recorded at baseline and SPT. Results: A total of 69 (28.8%) molars were extracted during active periodontal therapy, while 17 (7.1%) were lost during SPT. The 5-year survival rate of molars was 83.5% (95% confidence interval [CI], 76.9-88.4) for FI=0 (n=141), 81.0% (95% CI, 56.9-92.4) for FI=I (n=18), 50.0% (95% CI, 33.8-64.2) for FI=II (n=21), and 25.0% (95% CI, 6.9-48.8) for FI=III (n=4). Additionally, the 10-year survival rate for molars with FI = III was 12.5% (95% CI, 1.0-39.2), which was lower than that of molars with FI = 0 (77.1%; 95% CI, 69.7-83.0). Conclusions: The presence of a high degree of FI classifica-tion, especially Class III, is associated with a lower survival rate of molars among periodontally treated patients. Retention of molars is possible on a long-term basis through a maintenance program of periodontal therapy.

Objetivo: Este estudio tiene como objetivo analizar el tiempo de supervivencia de los molares según la clasificación de implicación de la furcación (IF) entre pacientes tratados periodontalmente bajo un programa de cuidado periodontal de apoyo. Materiales y Métodos: Se realizó un estudio retrospectivo entre 77 pacientes con periodontitis con 240 molares que habían sido sometidos a terapia periodontal y fueron seguidos con terapia periodontal de soporte (TPS) durante al menos cinco años. Los datos de los pacientes con periodontitis se recuperaron de la Historia Clínica de Periodoncia. Los parámetros clínicos de todos los molares involucrados y la modalidad de tratamiento se registraron al inicio y en el TPS. Resultado: Se extrajeron un total de 69 (28,8%) molares durante la terapia periodontal activa, mientras que 17 (7,1%) se perdieron durante la TPS. La tasa de supervivencia de los molares a 5 años fue del 83,5% (intervalo de confianza [IC] del 95%, 76,9-88,4) para FI=0 (n=141), del 81,0% (IC del 95%, 56,9-92,4) para FI=I ( n=18), 50,0% (IC 95%, 33,8-64,2) para FI=II (n=21) y 25,0% (IC 95%, 6,9-48,8) para FI=III (n=4). Además, la tasa de supervivencia a 10 años para los molares con FI = III fue del 12,5 % (IC del 95 %, 1,0-39,2), que fue inferior a la de los molares con FI = 0 (77,1 %; IC del 95 %, 69,7-83,0). Conclusión: La presencia de un alto grado de clasificación FI, especialmente Clase III, se asocia con una menor tasa de supervivencia de los molares entre los pacientes tratados periodontalmente. La retención de los molares es posible a largo plazo mediante un programa de mantenimiento de terapia periodontal.

Complicaciones, clínica y tratamiento de pacientes con hepatocarcinoma, posterior a quimioembolización en dos hospitales de Quito / Complications, symptoms and treatment of patients with hepatocellular carcinoma, after chemoembolization in two hospitals in Quito

INTRODUCCIÓN. La quimioembolización transarterial ha demostrado mejorar la tasa de sobrevida en los pacientes con hepatocarcinoma, se ha descrito como tratamiento paliativo; es útil, efectivo y bien tolerado. Esta terapéutica tiene el objetivo de disminuir el volumen tumoral. OBJETIVO. Determinar las complicaciones que presentan los pacientes con diagnóstico de hepatocarcinoma, posterior a la realización de quimioembolización transarterial del servicio de Gastroenterología del Hospital de Especialidades Carlos Andrade Marín y Hospital de Especialidades Eugenio Espejo, durante el período enero 2015 - enero 2020. MATERIALES Y MÉTODOS. Es un estudio retrospectivo observacional transversal; se diseñó un formulario de recolección de información, utilizando media y desvío estándar para variables cuantitativas; frecuencia y porcentaje para cualitativas; en las variables con distribución no paramétrico se recurrió a la mediana, rango intercuartil y sus intervalos, además se utilizó Chi Cuadrado, Índice de Yates y test de U Mann Whitney. Se trabajó en el paquete estadístico SPSS versión 26. RESULTADOS. Se analizaron 97 pacientes, el 60,8% fue de sexo masculino de los cuales el 56.7% presentó alguna comorbilidad; la mayoría de los pacientes no tuvieron complicaciones, sin embargo, la hipertensión arterial se presentó como manifestación clínica post quimioembolización transarterial (10,3%); el choque, el síndrome ascítico ­ edematoso y el dolor abdominal fueron las complicaciones de mayor frecuencia. Los datos estadísticamente significativos fueron los siguientes: los pacientes con hepatocarcinoma y cirrosis hepática con severidad Child Pugh B, tuvieron un porcentaje mayor de complicaciones valor p = 0,01; un tamaño más grande del tumor sobre el número de lesiones, se relacionó con presentar alguna complicación postquimioembolización transarterial valor p = 0,001, lo que significó un aumento en la estancia hospitalaria valor p = 0,006; los pacientes que presentaron complicaciones mayores y menores tuvieron un tiempo de hospitalización más prolongado valor p < 0,05; la asociación entre la mortalidad y las complicaciones post quimioembolización en hospitalización y en UCI tuvieron una tasa general de 3,2% valor p = 0,001. CONCLUSIÓN. Las complicaciones mayores como el síndrome ascítico edematoso y el estado de choque, se mantuvieron sobre la media general. Con una tasa de mortalidad esperada según la tendencia internacional.

INTRODUCTION: Transarterial chemoembolization has been shown to improve the survival rate in patients with hepatocarcinoma, it has been described as palliative treatment; it is useful, effective and well tolerated. This therapy aims to reduce tumor volume, due to its embolic, vascular and cytotoxic effects. OBJECTIVE: To determine the complications presented by patients diagnosed with hepatocarcinoma, after performing transarterial chemoembolization of the Gastroenterology service of the Carlos Andrade Marín Specialty Hospital and Eugenio Espejo Specialty Hospital, during the period January 2015 - January 2020. METHODOLOGY: This cross-sectional observational study was conducted in patients with hepatocarcinoma who underwent transarterial chemoembolization. A form was designed for the collection of information, through a pseudonymized database, which was analyzed using the statistical package SPSS version 26. RESULTS: 97 patients were analyzed, 60.8% were male, of which 56.7% presented some comorbidity; Most of the patients had no complications, however, arterial hypertension presented as a clinical manifestation after transarterial chemoembolization in 10.3%; shock, ascites edema decompensation and abdominal pain were the most frequent complications. The statistically significant data were the following: patients with hepatocellular carcinoma and liver cirrhosis with Child Pugh B severity had a higher percentage of complications valor p = 0,01; a larger tumor size compared to the number of lesions was related to presenting some post-transarterial chemoembolization complication valor p = 0,001, which meant an increase in hospital stay valor p = 0,006; patients who presented major and minor complications had a longer hospitalization time valor p < 0,05, the association between mortality and post chemoembolization complications in hospitalization and in the ICU had an overall rate of 3.2% valor p = 0,001. CONCLUSION. Major complications, such as edematous ascitic syndrome and shock, remained above the general average. With an expected mortality rate according to the international trend.

Resultados de la esofaguectomía mínimamente invasiva por cáncer de esófago a medio y largo plazo

Introducción: La esofagectomía es actualmente el tratamiento curativo del cáncer de esófago. El objetivo de este trabajo es conocer los resultados de la esofaguectomía mínimamente invasiva a corto y medio plazo en pacientes intervenidos de carcinoma epidermoide y adenocarcinoma de esófago en nuestro hospital. Material y Métodos: Se recogieron 19 pacientes desde enero de 2020 hasta junio de 2021 y se realizó el seguimiento a todos ellos durante 20 meses. Se recogieron diferentes variables relacionadas con el paciente, el tumor, la cirugía y referentes al postoperatorio. Los datos fueron almacenados y procesados usando el software estadístico R-Comander asumiendo un error α de 0,05. Resultados: La mediana de estancia hospitalaria total fue de 29 días. Seis pacientes, precisaron de reingreso en Reanimación: dos por shock séptico secundario a la fuga de anastomosis grado III, uno por hemorragia digestiva alta y los tres por insuficiencia respiratoria. A los 90 días reingresaron un 5,3% del total de pacientes. No se produjeron fallecimientos en los tres meses siguientes a la cirugía. Todos los pacientes presentaron una supervivencia mayor de seis meses. La supervivencia global a seis, 12 y 18 meses se sitúa en 100, 84 y 63%. La supervivencia libre de enfermedad a los tres meses fue del 84%, a los 6 meses del 63% y al año el 58%. Discusión: Los resultados obtenidos en nuestro estudio coinciden con lo que hay reflejado en la literatura. Por tanto, la esofagectomía mínimamente invasiva es una técnica efectiva en el tratamiento del cáncer de esófago.

Introduction: Oesophagectomy is currently the curative treatment for oesophageal cancer. The aim of this study is to know the results of minimally invasive oesophagectomy in the short and medium term in patients operated on for squamous cell carcinoma and adenocarcinoma of the oesophagus in our hospital. Material and Methods: 19 patients were collected from January 2020 to June 2021 and all of them were followed up for 20 months. Different variables related to the patient, tumour, surgery and postoperative period were collected. Data were stored and processed using R-Comander statistical software assuming an α-error of 0.05. Results: The median total hospital stay was 29 days. Six patients required readmission to resuscitation: two for septic shock secondary to grade III anastomotic leak, one for upper gastrointestinal haemorrhage and three for respiratory failure. At 90 days, 5.3% of the total number of patients were re-admitted. There were no deaths in the three months following surgery. All patients had a survival of more than six months. Overall survival at six, 12 and 18 months was 100, 84 and 63%. Disease-free survival at three months was 84%, at six months 63% and at one year 58%. Discussion: The results obtained in our study coincide with those reported in the literature. Minimally invasive oesophagectomy is therefore an effective technique in the treatment of oesophageal cancer.

Stomach Cancer and Postendoscopy Colorectal Cancer: Parallel Lives / Cáncer gástrico y cáncer colorrectal posendoscopia: vidas paralelas

Abstract Background and objectives: The rates of (interval) stomach cancer (SC) or postendoscopy (PECRC) or postcolonoscopy (PCCRC) colorectal cancer (CRC) have been little studied in our setting. Data from overseas studies reported PECRC and PCCRC rates of 7-26%. We aim to determine and compare local PECRC and PCCRC rates and characteristics. Patients and methods: With data from three quaternary-care cancer centers, we ambispectively identified patients diagnosed with SC and CRC between 2012 and 2021, in whom a history of endoscopies or colonoscopies in the previous three years was investigated. Cancers diagnosed between 6 and 36 months after an endoscopic study reported as normal were defined as interval cancers. This study compares the clinical, endoscopic, and survival characteristics of both PECRC and PCCRC cohorts. Results: Of 828 patients diagnosed with SC, 66 had PECRC (rate: 7.3%), while in 919 patients with CRC, 68 had PCCRC (rate: 6.9%). There were no significant differences in age or sex, although males predominated (2:1) in the PECRC (0.09). The finding of premalignant lesions was similar in both groups (p = 0.260). The anatomical location was shown to be more proximal (right colon) in the PCCRC than in the PECRC (cardia/fundus) (p = 0.002). Gastric neoplasms were more poorly differentiated (58%) than colon neoplasms (26%) (p = 0.001). There were no differences in early cancers, but tumor status was more advanced in PECRC (p < 0.01). The Kaplan-Meier showed a worse survival for PCCRC than for detected CRC, with no differences in SC and PECRC, suggesting poor survival. Conclusions: The rate of interval cancers is 7.3% and 6.9%, and differences were found between PECRC and PCCRC, proximal locations of the lesions, degree of differentiation, tumor status, and poor survival for the PCCRC. Establishing measures to achieve the World Endoscopy Organization's goal of <5% is necessary.

Resumen Antecedentes y objetivos: Las tasas de cáncer gástrico (CG) o cáncer colorrectal (CCR) posendoscopia (CGPE) o poscolonoscopia (CCRPC) (de intervalo) han sido poco estudiadas en nuestro medio. Los datos de estudios en el exterior informaron tasas de CGPE y CCRPC de 7%-26%. Nuestro objetivo fue determinar y comparar las tasas y características del CGPE y CCRPC locales. Pacientes y métodos: Con datos de tres centros oncológicos de cuarto nivel se identificaron, de forma ambispectiva, pacientes diagnosticados con CG y CCR entre 2012 y 2021, en quienes se investigó el antecedente de endoscopias o colonoscopias en los tres años previos. Los cánceres diagnosticados entre 6 y 36 meses después de un estudio endoscópico reportado como normal se definieron como cánceres de intervalo. En este estudio se comparan las características clínicas, endoscópicas y de sobrevida entre ambas cohortes de cánceres posendoscopia y poscolonoscopia. Resultados: De 828 pacientes diagnosticados con CG, 66 tuvieron CGPE (tasa: 7,3%), mientras que en 919 pacientes con CCR, 68 pacientes presentaron CCRPC (tasa: 6,9%). No hubo diferencias significativas en la edad o el sexo, aunque predominó el masculino (2:1) en el CGPE (0,09). El hallazgo de lesiones premalignas fue similar en ambos grupos (p = 0,260). La ubicación anatómica mostró ser más proximal (colon derecho) en el CCRPC que en el CGPE (cardias/fondo) (p = 0,002). Las neoplasias gástricas fueron más mal diferenciadas (58%) que las de colon (26%) (p = 0,001). No hubo diferencias en los cánceres tempranos, pero el estado tumoral fue más avanzado en el CGPE (p < 0,01). El Kaplan-Meier mostró una peor sobrevida para el CCRPC que para el CCR detectado, sin diferencias en el CG y el CGPE, que mostraron una pobre sobrevida. Conclusiones: La tasa de cánceres de intervalo es de 7,3% y 6,9%, y se encontraron diferencias entre los CGPE y el CCRPC, ubicaciones proximales de las lesiones, grado de diferenciación, estado del tumor y una pobre sobrevida para el CCRPC. Se hace necesario establecer medidas para lograr la meta de la Organización Mundial de Endoscopia de <5%.

Clinical outcome and prognosis of patients with acute myeloid leukemia submitted to chemotherapy with 5 years of follow-up

Abstract Objective The purpose of this study was to evaluate the clinical-epidemiological profile, associated risk factors and clinical outcomes of patients with acute myeloid leukemia (AML), identifying the main causes of morbidity and mortality and overall survival rate of patients at five years of follow-up. Method This was a retrospective cohort study evaluating the prognosis and clinical outcomes of 222 patients diagnosed with AML at three large hematology centers in Ceará (northeastern Brazil) over a period of five years. Results The mean age at diagnosis was 44.1 ± 16 years, with a female prevalence of 1.3:1. No additional relevant risk factors associated with the development of AML were found, except for the well-established cytogenetic assessment. The overall 5-year survival rate was 39.4% (95%CI: 35.47 - 42.17). The main causes of death were disease progression (37.72%; n = 84) and sepsis (31.58%; n = 70). Conclusion The clinical outcomes in our sample of AML patients were similar to those of other reported groups. Disease progression and infection were the main causes of death. Access to diagnostic flow cytometry and karyotyping was greater in our sample than in the national average. As expected, overall survival differed significantly according to the risk, as determined by cytogenetic testing.

Epidemiología y resultados del paro cardiorrespiratorio pediátrico en la unidad de recuperación cardiovascular de un hospital público en Argentina / Epidemiology and outcomes of pediatric cardiac arrest in a cardiovascular unit at a public hospital in Argentina

Resumen Antecedentes: Los niños con cardiopatías congénitas experimentan paro cardiorrespiratorio (PCR) con mayor frecuencia que la población pediátrica general. Se desconoce la epidemiología exacta del PCR en nuestro medio, al igual que el riesgo de mortalidad y los factores que influyen en la evolución neurológica. Objetivo: Describir la epidemiología y los resultados asociados con la reanimación cardiopulmonar pediátrica en una unidad de recuperación cardiovascular. El criterio de valoración primario fue la supervivencia al momento del alta hospitalaria; los secundarios fueron el retorno de la circulación espontánea, la supervivencia a las 24 horas y la condición neurológica en el largo plazo. Método: Estudio de cohorte longitudinal, descriptivo, prospectivo, en menores de 18 años que requirieron reanimación cardiopulmonar entre 2016 y 2019. Se analizaron las variables demográficas y las características del paro cardiorrespiratorio y de la reanimación, así como su resultado. Se realizaron análisis de una y múltiples variables para comparar a los pacientes sobrevivientes con los fallecidos. Resultados: De los 1,842 pacientes internados, el 4.1% experimentó PCR. Se analizaron 50 pacientes con expedientes completos. Se logró el retorno de la circulación espontánea en el 78% (39), con una supervivencia alta del 46%. La reanimación > 6 min y el uso de fármacos vasoactivos fueron factores predictivos de mortalidad; se realizó el seguimiento de 16/23 pacientes, 10 de ellos con desarrollo normal para la edad luego de seis meses, seis tenían trastorno generalizado del desarrollo. Conclusiones: El 4.1% de los pacientes presentó un PCR, con una tasa de 3.4 PCR por 1,000 días-paciente. La supervivencia al egreso hospitalario (n = 50) fue del 46%. La reanimación > 6 min y la utilización de fármacos vasoactivos fueron factores predictivos independientes de mortalidad. Luego de seis meses, el 63% tenía desarrollo neurológico normal para la edad.

Abstract Background: Children with congenital heart disease present a higher frequency of cardiorespiratory arrest (CRA) than the general pediatric population. The epidemiology of CRA is not exactly known in our setting, nor are the mortality risk or the neurological evolution factors. Objective: To describe the epidemiology and outcomes associated with pediatric cardiopulmonary resuscitation in a cardiovascular recovery unit. The primary endpoint was the survival to discharge and the secondary endpoints were the return to spontaneous circulation, the survival at 24 hours and the remote neurological condition. Methods: Descriptive, prospective, longitudinal cohort study in children under 18 years of age who required cardiopulmonary resuscitation between 2016 and 2019. Demographic variables, characteristics of cardiopulmonary arrest, resuscitation and outcome were analyzed. An uni- and multivariate analysis was performed comparing survivors and deceased. Results: Out of 1,842 hospitalized patients, 4.1% presented CRA. Fifty patients with complete records were analyzed. Seventy-eight percent (39) returned to spontaneous circulation with a high survival rate of 46%. Resuscitation > 6 min and the use of vasoactive drugs were predictors of mortality; 16/23 patients were followed up, 10 of them with normal development for age at 6 months, six had pervasive developmental disorder. Conclusions: 4.1% of patients presented CRA, with a rate of 3.4 CRA per 1,000 patient-days. Survival at hospital discharge (n = 50) was 46%. Resuscitation > 6 min and the use of vasoactive drugs were independent predictors of mortality. At six months, 63% had normal neurological development for age.

Mediação de saberes na sobrevivência ao câncer de laringe: a experiência de pessoas Laringectomizadas Totais / Mediation of knowledge in surviving laryngeal cancer: the experience of Total Laryngectomized persons / Mediación del conocimiento en la supervivencia al cáncer de laringe: la experiencia de las personas sometidas a Laringectomía Total

O presente estudo parte de reflexões acerca da sobrevivência ao câncer e da experiência estigmatizante vivenciada por pessoas diagnosticadas com câncer de laringe no Hospital Nacional do Câncer/Instituto Nacional do Câncer, submetidas à cirurgia de Laringectomia Total e participantes do Grupo de Laringec-tomizados Totais. O objetivo foi compreender as mediações de saberes e de informações produzidas pelos participantes do grupo na interface com os profissionais de saúde, considerando a sua dupla condição de estigma: o câncer e a deficiência. Parte-se de uma abordagem socioantropológica de caráter qualitativo e ex-ploratório que empregou os métodos de entrevista narrativa com cinco participantes. A análise foi realizada pelo método hermenêutico-dialético. Nos resultados destacam-se a busca pelo reconhecimento individual e social e a valorização da experiência frente aos saberes oficiais e o quanto as mediações extrapolam o espaço institucional. A mediação de saberes faz emergirem elementos significativos para o enfrentamento de uma cultura informacional dominante.

This study is based on reflections on surviving cancer and the stigmatizing experience of people diagnosed with laryngeal cancer at the Hospital Nacional do Câncer/Instituto Nacional do Câncer, who underwent Total Laryngectomy surgery and participated in the Total Laryngectomy Group. The goal was to understand the mediations of knowledge and information produced by the group participants, in the interface with health professionals, considering their double condition of stigma: cancer and disability. It is based on a socio-anthropological approach, of qualitative and exploratory nature that employed the narrative interview method with five participants. The analysis was carried out through the hermeneutic-dialectic method. The results highlight the search for individual and social recognition and the appreciation of experience in relation to official knowledge, and how the mediations go beyond the institutional space. The mediation of knowledge brings out significant elements to confront a dominant informational culture.

El presente estudio se basa en las reflexiones sobre la supervivencia al cáncer y la experiencia estigmatiza-dora de personas diagnosticadas de cáncer de laringe en el Hospital Nacional do Câncer/Instituto Nacional do Câncer, que se sometieron a una Laringectomía Total y participaron en el Grupo de Laringectomía Total. Objetivo: comprender las mediaciones de conocimiento e información producidas por los participantes del grupo, en la interfaz con los profesionales de salud, considerando su doble estigma: cáncer y discapacidad. Se basa en un abordaje socioantropológico, cualitativo y exploratorio, que utilizó métodos de entrevista narrativa con cinco participantes. El análisis ocurrió a través del método hermenéutico-dialéctico. Los resultados destacan la búsqueda de reconocimiento individual y social y la valorización de la experiencia en relación con el conocimiento oficial y la medida en que las mediaciones van más allá del espacio insti-tucional. La mediación del conocimiento pone de manifiesto elementos significativos sobre una cultura informacional dominante.

Respuesta al tratamiento inmunosupresor de pacientes con hepatitis autoinmune

Introducción: La respuesta al tratamiento inmunosupresor en la hepatitis autoinmune influye en el curso clínico de la enfermedad y se asocia a mayor sobrevida. Objetivo: Describir la respuesta al tratamiento inmunosupresor en pacientes con hepatitis autoinmune. Método: Se realizó un estudio descriptivo, longitudinal, ambispectivo, en 32 enfermos con hepatitis autoinmune, los cuales recibieron tratamiento inmunosupresor con evaluación de la respuesta a los 6 meses. Las variables incluidas fueron: tipo de hepatitis autoinmune, forma de presentación, forma de debut y respuesta al tratamiento. Se utilizaron medidas descriptivas de resumen: media y desviación estándar para variables cuantitativas y porcentaje para las variables cualitativas. Para estimar la función de supervivencia se utilizó la curva de Kaplan-Meier y Log-rank para la comparación de medias. Resultados: El 71,9 % de los enfermos estaban con cirrosis en el momento del diagnóstico. Los 13 pacientes con remisión bioquímica permanecieron sin progresión en la evaluación actual. La supervivencia en los pacientes respondedores fue del 100 % y en los no respondedores de 47,5 % a los 10 años de seguimiento. Conclusiones: La respuesta al tratamiento inmunosupresor tiene un impacto positivo en la no progresión de la hepatitis autoinmune y se asoció a mayor supervivencia.

Introduction: The response to immunosuppressive treatment in autoimmune hepatitis influences the clinical course of the disease and is associated with a longer survival. Objective: Describe the response to immunosuppressive treatment in patients with autoimmune hepatitis. Method: A descriptive, longitudinal, ambispective study was carried out in 32 patients with autoimmune hepatitis, who received immunosuppressive treatment with response evaluation at 6 months. The variables included were: type of autoimmune hepatitis, form of presentation, form of onset, and response to treatment. Descriptive summary measures were used: mean and standard deviation for quantitative variables and percentage for qualitative variables. To estimate the survival function, the Kaplan-Meier curve and Log-rank were used to compare means. Results: 71.9 % of the patients were already cirrhotic at the time of diagnosis. The 13 patients with biochemical remission, remained without progression in the current evaluation. Survival in responding patients was 100 %, while in non-responders it was 47.5% at 10-year follow-up. Conclusions: The response to immunosuppressive treatment has a positive impact on the non-progression of autoimmune hepatitis and was associated with greater survival.

Relación entre la compatibilidad del HLA y la pérdida del injerto en trasplante renal de donante cadavérico: Un análisis por propensity score matching en Colombia / Relationship between HLA compatibility and graft loss in renal transplant from a deceased donor: An analysis by propensity score matching in Colombia

Introducción. En Colombia, solo un 24 % de los pacientes en lista recibieron un trasplante renal, la mayoría de donante cadavérico. Para la asignación de órganos se considera el HLA A-B-DR, pero la evidencia reciente sugiere que el HLA A-B no está asociado con los desenlaces del trasplante. El objetivo de este estudio fue evaluar la relevancia del HLA A-B-DR en la sobrevida del injerto de los receptores de trasplante renal. Métodos. Estudio de cohorte retrospectivo que incluyó pacientes trasplantados renales con donante cadavérico en Colombiana de Trasplantes, desde 2008 a 2023. Se aplicó un propensity score matching (PSM) para ajustar las covariables en grupos de comparación por compatibilidad y se evaluó la relación del HLA A-B-DR con la sobrevida del injerto renal por medio de la prueba de log rank y la regresión de Cox. Resultados. Se identificaron 1337 pacientes transplantados renales, de los cuales fueron mujeres un 38,7 %, con mediana de edad de 47 años y de índice de masa corporal de 23,8 kg/m2. Tras ajustar por PSM las covariables para los grupos de comparación, la compatibilidad del HLA A-B no se relacionó significativamente con la pérdida del injerto, con HR de 0,99 (IC95% 0,71-1,37) para HLA A y 0,75 (IC95% 0,55-1,02) para HLA B. Solo la compatibilidad por HLA DR fue significativa para pérdida del injerto con un HR de 0,67 (IC95% 0,46-0,98). Conclusión. Este estudio sugiere que la compatibilidad del HLA A-B no influye significativamente en la pérdida del injerto, mientras que la compatibilidad del HLA DR sí mejora la sobrevida del injerto en trasplante renal con donante cadavérico

Introduction. In Colombia, only 24% of patients on the waiting list received a renal transplant, most of them from cadaveric donors. HLA A-B-DR is considered for organ allocation, but recent evidence suggests that HLA A-B is not associated with transplant outcomes. The objective of this study was to evaluate the relevance of HLA A-B-DR on graft survival in kidney transplant recipients. Methods. Retrospective cohort study that included kidney transplant recipients with a cadaveric donor in Colombiana de Trasplantes from 2008 to 2023. A propensity score matching (PSM) was applied to adjust the covariates in comparison groups for compatibility, and the relationship of HLA A-B-DR with kidney graft survival was evaluated using the log rank test and Cox regression. Results. A total of 1337 kidney transplant patients were identified; of those, 38.7% were female, with median age of 47 years, and BMI 23.8 kg/m2. After adjusting the covariates with PSM for the comparison groups, HLA A-B matching was not significantly related to graft loss, with HR of 0.99 (95% CI 0.71-1.37) and 0.75 (95% CI 0.55-1.02), respectively. Only HLA DR matching was significant for graft loss with an HR of 0.67 (95% CI 0.46-0.98). Conclusions. This study suggests that HLA A-B matching does not significantly influence graft loss, whereas HLA DR matching does improve graft survival in renal transplantation with a cadaveric donor.

Factors associated with cystic fibrosis mortality before the age of 30: retrospective analysis of a cohort in southern Brazil

The aim of this study was to retrospectively evaluate the factors associated with mortality before the age of 30 in adults with cystic fibrosis (CF) followed up at a referral center in southern Brazil. This study included individuals over 18 years of age. Clinical data related to childhood and the period of transition to an adult healthcare of individuals with CF were recorded, as well as spirometric and mortality data of individuals between 18 and 30 years of age. A total of 48 patients were included in this study, of which 28 (58.3%) were male. Comparing groups, we observed a higher prevalence of homozygosis for the F508del mutation (P=0.028), massive hemoptysis before the age of 18 (P=0.027), and lower values of pulmonary function, forced expiratory volume in the first second (FEV1) (%) (P=0.002), forced vital capacity (FVC) (%) (P=0.01), and FEV1/FVC (%) (P=0.001) in the group that died before age 30. F508del homozygosis, episodes of massive hemoptysis in childhood, and lower FEV1 values at age 18 were related to mortality before age 30 in a cohort of individuals with CF in southern Brazil.

Factores que influyen en la supervivencia de pacientes con diálisis en El Salvador / Influencing Factors in the Survival of Dialysis Patients in El Salvador

Introducción. La enfermedad renal crónica es responsable de aproximadamente 2,4 millones de defunciones a nivel mundial. La supervivencia a los cinco años después de iniciar diálisis se encuentra entre un 39 a 60 % dependiendo del país. Objetivo. Describir la situación epidemiológica de los pacientes con diálisis y analizar los factores que influyen en la supervivencia de pacientes a cinco años de iniciar tratamiento sustitutivo renal en El Salvador. Metodología. Estudio de cohorte retrospectivo de los pacientes incluidos en el Registro Nacional de Diálisis y Trasplante Renal desde enero de 2016 hasta febrero de 2023. El seguimiento se comenzó al inicio de la diálisis, el evento de interés fue la muerte del paciente. Se utilizó el método de Kaplan-Meier para determinar la supervivencia al año y a los cinco años y la regresión de Cox con el modelo de Royston-Parmar para analizar los factores que influyen sobre la supervivencia a los cinco años. Resultados. El estudio incluyó 7088 pacientes, la supervivencia a uno y cinco años fue del 79,5 % (IC 95 %: 78,6-80,5) y 50,6 % (IC 95 %: 49,1-52,1) respectivamente. La regresión de Cox para la edad de inicio de tratamiento resultó en un hazard ratio de 1,02 (IC 95 %: 1,01-1,02), mientras que para el oficio de ser agricultor el hazard ratio fue 1,1 (IC 95 %: 1,01-1,18) y para la etiología hipertensiva el hazard ratio fue de 0,7 (IC 95 %: 0,64-0,78). Conclusión. La edad de inicio de tratamiento y el ser agricultor están asociados con una menor supervivencia a cinco años en pacientes con diálisis

Introduction. The chronic kidney disease is responsible for approximately 2.4 million deaths worldwide, in El Salvador during 2019 death rate was 72.9 for 100 000 habitants, five year survival in patients after starting dialysis was between 39 and 60 % depending on the country. Objective. Analyze the factors that influence the five years survival in patients after starting renal replacement therapy in El Salvador. Methodology. It is a retrospective cohort study from patients included in dialysis and renal replacement therapy national registry from January 2016 to February 2023, the start point for the following was the initiation of dialysis, the event of interest was patient ́s death, the Kaplan-Meier method was used to determine one year and five year survival; and Cox regression with Royston-Parmar model was used to analyze the factors that influence survival. Results. The study included 7088 patients, one and five-years survival was 79.5 % (CI 95 %: 78.6-80.5) and 50.6 % (CI 95 %: 49.1-52.1) respectively. The Cox regression for age of treatment initiation resulted in a hazard ratio of 1.02 (CI 95 %: 1.01-1.02), while for farmers, the hazard ratio was 1.09 (CI 95 %: 1.00-1.18), for hypertensive etiology the hazard ratio was 0.7 (CI 95 %: 0.64-0.78). Conclusion. Data suggest that age of treatment initiation, and jobs related to agriculture were associated with less five year survival in dialysis patients.

Total neoadjuvant therapy for locally advanced rectal cancer / 解放军医学杂志

Diagnosis and treatment of locally advanced rectal cancer(LARC)must be completed by a collaborative model of a multi-disciplinary team.The neoadjuvant chemoradiotherapy significantly reduced the local recurrence rate of LARC,but did not affect the occurrence of distant metastases and overall survival.Total neoadjuvant therapy(TNT),by strengthening the intensity of chemotherapy and extending the time from radiotherapy to surgery,can improve the tumor response rate as well as disease-free survival rate and metastasis-free survival rate.It offers advantages such as enhancing the compliance with chemotherapy,maximizing tumor regression,improving survival and increasing the chance of organ preservation.TNT is a promising treatment model for LARC patients with high risk of distant metastasis or strong desire for organ preservation.With the application of immunotherapy in the field of TNT,the mode of TNT continues to expand.And the exploration of therapeutic predictive markers will help to provide a personalized treatment for patients.