[Renal involvement in adults with cystic fibrosis: study of 89 patients]. / Afectación renal en adultos con fibrosis quística: estudio de 89 pacientes.

INTRODUCTION: We are assisting to an increase in survival rates among individuals with cystic fibrosis (CF). Until now, renal involvement was a minority issue, but with the rise in life expectancy, we will likely see an increase in its prevalence. Our main objective was to assess renal function in CF and study risk factors associated with its deterioration. METHODS: A cross-sectional, retrospective study was conducted, including adults with CF. Clinical, respiratory function, microbiological, blood and urine analysis, and major chronic treatments received were collected. RESULTS: Eighty nine patients with a mean age of 35±12 years were analyzed. Mean serum creatinine levels were 0.8±0.2mg/dL. 10.6% had a glomerular filtration rate less than 90mL/min/1.73m2. No patient showed albuminuria. In multivariate model, only age was an independent risk factor for reduced glomerular filtration (OR: 0.344; 95%CI: 0.004-0.017; P=.002). CONCLUSIONS: 11% of CF adults show decreased glomerular filtration, with age being the sole independent risk factor. Vigilance for this uncommon condition is crucial.

The Effect of L-Carnitine on Cadmium Toxicity in Liver and Kidney Tissue in Prepubertal Female Rats / Efecto de la L-Carnitina sobre la Toxicidad del Cadmio en el Hígado y el Tejido Renal en Ratas Hembras Prepúberes

SUMMARY: Cadmium (Cd) is a toxic element that accumulates in kidney and liver. L-carnitine(LC) is a natural compound that has been shown to exhibit antioxidant activity. Aim of this study was to investigate the effect of L-carnitine against cadmium-induced changes in liver and kidney tissues in prepubertal female rats. In this study 21-day-old female Wistar Albino rats were used. Control, cadmium (2 mg/kg cadmium intraperitoneally), L-carnitine (300 mg/kg orally) and cadmium+L-carnitine groups were formed. Liver and kidney tissue sections were stained with Hematoxylin-Eosin and Masson Trichrome. Histological scoring was performed in liver and kidney. In the liver tissue given Cd, bile duct proliferation, inflammation cells and connective tissue in the portal area were decreased in treatment group. In kidneys, cadmium group treated with L-carnitine, it was observed that the capillary congestion in the kidneys decreased, but tubular dilatation continued in some places. In fibrosis scoring of the liver groups,statistically significant decrease was observed in the Cd+LC group compared to group of cadmium. In the histological scoring results of the kidney groups, statistically significant decrease in congestion and tubular epithelial degeneration was observed in the group treated with L-carnitine compared to group with cadmium. In conclusion medium-dose cadmium has toxic effects in liver and kidney of prepubertal female rats in subacute period,these effects are alleviated with L-carnitine.

El cadmio (Cd) es un elemento tóxico que se acumula en los riñones y el hígado. La L-carnitina (LC) es un compuesto natural que ha demostrado tener actividad antioxidante. El objetivo de este estudio fue investigar el efecto de la L-carnitina contra los cambios inducidos por el cadmio en los tejidos del hígado y el riñón en ratas hembra prepúberes. En este estudio se utilizaron ratas Wistar Albinas hembra de 21 días de edad. Se formaron grupos control, cadmio (2 mg/kg de cadmio por vía intraperitoneal), L- carnitina (300 mg/kg por vía oral) y cadmio + L-carnitina. Se tiñeron secciones de tejido de hígado y riñón con Hematoxilina-Eosina y tricrómico de Masson. La puntuación histológica se realizó en hígado y riñón. En el tejido hepático que recibió Cd, la proliferación de los conductos biliares, las células inflamatorias y el tejido conectivo en el área portal disminuyeron en el grupo con tratamiento. En los riñones, en el grupo de cadmio tratado con L- carnitina, se observó que la congestión capilar disminuyó, pero la dilatación tubular continuó en algunos sitios. En la puntuación de fibrosis de los grupos de hígado, se observó una disminución estadísticamente significativa en el grupo de Cd+LC en comparación con el grupo de cadmio. Los resultados de puntuación histológica de los grupos de riñón, arrojó una disminución estadísticamente significativa en la congestión y el epitelio tubular Se observó degeneración en el grupo tratado con L-carnitina en comparación con el grupo con cadmio. En conclusión, las dosis medias de cadmio tienen efectos tóxicos en el hígado y los riñones de ratas hembras prepúberes en el período subagudo; estos efectos se alivian con L-carnitina.

The influence of age, period, and cohort factors on the incidence of kidney cancer in Spain 1990-2019: Evidence from the global burden of disease study.

OBJECTIVE: This study aimed to assess the influence of age, period, and cohort (A-P-C) factors on kidney cancer (KC) incidence trends in Spain from 1990 to 2019. METHODS: Employing data from the Global Burden of Disease Study 2019, we employed joinpoint analysis to determine long-term patterns and A-P-C modelling to quantify net drift, local drift, longitudinal age curves, and rate ratios (RRs) of period and cohort effects. RESULTS: Over the period 1990-2019, an estimated 142,811 cases of KC were diagnosed in Spain. A consistent upward trend in KC incidence was observed for both men and women, with the male-to-female ratio remaining stable at 2.6. Joinpoint analysis identified three distinct periods for men: An initial period (1990-1995) characterised by a significant increase in rates, a subsequent period (1995-2016) characterised by a slowdown in the rate of increase, and a final period (2016-2019) in which rates have plateaued. In women, 2 time periods were observed: an initial period (1990-2007) in which rates increased significantly, followed by a period of stabilization (2007-2019). Men born in the early-mid 20th century had a rising KC risk, peaking in the 1960s. Women's risk rose steadily, peaking in the late 1990s. CONCLUSION: A-P-C analysis reveals steady KC incidence increase in both genders over three decades. This highlights the need for targeted public health policies and effective prevention strategies.

Calidad de vida y características clínicas de pacientes con trasplante renal con y sin rinosinusitis crónica / Quality of life and clinical characteristics of renal transplant patients with and without chronic rhinosinusitis

RESUMEN Introducción: El trasplante es el tratamiento de elección en pacientes con enfermedad renal crónica (ERC). Requiere inmunosupresión, que predispone al desarrollo de complicaciones; la rinosinusitis crónica (RSC) es una de las más importantes. Objetivo: Comparar las características de pacientes con ERC con y sin RSC en protocolo de trasplante en un hospital de concentración en Puebla, en México. Métodos: Estudio comparativo, transversal, retrospectivo, en pacientes de un hospital de tercer nivel de atención, con ERC y en protocolo de trasplante renal. Se aplicaron las escalas SNOT-22 y Lund-Mackay. Se utilizó estadística descriptiva y pruebas U de Mann-Whitney, exacta de Fisher y coeficiente de Phi; p<0.05, por lo que se consideró significativa. Resultados: Se reclutaron 360 pacientes: 49 presentaron RSC; prevalencia, 13.61 %; medias edad, 39.22 ±12.09 años y tiempo de evolución, 17.73 ±5.91 semanas. Presentaron poliposis nasosinusal 14.3 %; obstrucción nasal, 95.9 %; algia facial, 67.3%; rinorrea, 49 % e hiposmia/anosmia, 40.8 %. Factores de riesgo asociados: alergia a ácido acetilsalicílico (p=0.014) y atopia (p=0.000). Variantes anatómicas en pacientes con y sin RSC, respectivamente: Celdilla Agger-Nasi 95 % y 15.4 %; desviación septal, 50 % y 6.4 %; hipertrofia de cornetes, 50 % y 1.3 %; concha bullosa, 30 % y 4.2 % y cornete paradójico, 10 % y 1.6 %. La afectación de calidad de vida predominante en pacientes con y sin RSC fue moderada con un 53.1 % y leve, 97.1 % (p=0.000). Conclusión: La prevalencia de RSC fue 13.61 %; los factores de riesgo asociados, alergia al ácido acetilsalicílico y atopia y la variante anatómica predominante, Agger-nasal. La severidad tomográfica fue leve y la afectación de la calidad de vida, moderada.

ABSTRACT Introduction: Transplantation is the treatment of choice for patients with chronic kidney disease (CKD). It requires immunosuppression, which predisposes to the development of complications; chronic rhinosinusitis (CRS) is one of the most significant. Objetive: To compare the characteristics of patients with CKD and without CRS in a renal transplant protocol at a specialized hospital in Puebla, Mexico. Methods: A comparative, cross-sectional, retrospective study in patients with CKD and in renal transplant protocol at a third-level care hospital. The SNOT-22 and Lund-Mackay scales were applied. Descriptive statistics, Mann-Whitney U tests, Fisher's exact test, and Phi coefficient were used; p<0.05 was considered significant. Results: 360 patients were recruited: 49 presented with CRS; prevalence: 13.61%; mean age: 39.22 ± 12.09 years and duration of progression: 17.73 ± 5.91 weeks. Naso-sinusal polyposis was present in 14.3%; nasal obstruction in 95.9%; facial pain in 67.3%; rhinorrhea in 49% and hyposmia/anosmia in 40.8%. Associated risk factors: allergy to acetylsalicylic acid (p=0.014) and atopy (p=0.000). Anatomical variants in patients with and without CRS, respectively: Agger nasi cell 95% and 15.4%; septal deviation, 50% and 6.4%; turbinate hypertrophy, 50% and 1.3%; concha bullosa, 30% and 4.2%; and paradoxical turbinate, 10% and 1.6%. The predominant quality of life impact in patients with and without CRS was moderate at 53.1% and mild at 97.1% (p=0.000). Conclusion: The prevalence of CRS was 13.61%; the associated risk factors were allergy to acetylsalicylic acid and atopy, and the predominant anatomical variant was Agger nasi. The tomographic severity was mild, and the impact on quality of life was moderate.

Enfermedad oncoproliferativa en el receptor de trasplante renal. Nuestra experiencia / Oncoproliferative diseases in kidney transplant recipients. Our experience

Introducción: El cáncer conlleva a una mortalidad de hasta 12 % en los pacientes trasplantados, y se considera la tercera causa de morbilidad y mortalidad en los receptores, al ser estos susceptibles a desarrollar enfermedades oncoproliferativas, a largo plazo. Objetivo: Describir la incidencia de neoplasias en receptores de trasplante renal. Métodos: Estudio descriptivo y longitudinal que incluyó 15 receptores de trasplante renal funcionante, con diagnóstico de neoplasias malignas en diferentes localizaciones en el período comprendido entre enero de 2017 y junio de 2023 en el servicio de Nefrología del Hospital Universitario Clínico-Quirúrgico «Arnaldo Milián Castro» de Santa Clara, Villa Clara. Resultados: Predominaron los hombres y el color de piel blanca: 53,3 % y 73,3% respectivamente, con tiempo postrasplante superior a tres años en 12 pacientes (80 %). El antecedente de exposición al citomegalovirus representó el 80 %; la infección bacteriana de la vía respiratoria y digestiva fue la más frecuente. Conclusiones: La neoplasia intraepitelial cervicouterina, la de colon con metástasis hepática y las cerebrales resultaron las más frecuentes, y fueron tratadas con cirugía, quimioterapias o ambas, según los criterios quirúrgicos en cada caso; no obstante, la mortalidad fue elevada. La estirpe neoplásica preponderante fue la neoplasia intraepitelial cervical en un 26,6 %. La mortalidad fue alta y la supervivencia fue menor en el sexo masculino, sin rebasar los dos años posteriores al diagnóstico.

Introduction: cancer entails a mortality of up to 12 % in transplanted patients and is considered the third leading cause of morbidity and mortality in recipients who are susceptible to develop oncoproliferative diseases in the long term. Objective: to describe the incidence of neoplasms in renal transplant recipients. Methods: we carried out a descriptive and longitudinal study including 15 functioning renal transplant recipients who were diagnosed with malignant neoplasms in different locations in the Nephrology service at "Arnaldo Milián Castro" Clinical and Surgical University Hospital in Santa Clara, Villa Clara between January 2017 and June 2023. Results: males and white skin color predominated: 53.3 % and 73.3% respectively, with post-transplant time greater than three years in 12 patients (80 %). The history of cytomegalovirus exposure represented 80 %; bacterial infection of the respiratory and digestive tracts was the most frequent. Conclusions: cervicouterine intraepithelial neoplasia, colon cancer with liver and brain metastases were the most frequent and treated with surgery chemotherapies or both according to the surgical criteria in each case; however, mortality was elevated. Cervical intraepithelial neoplasia predominated in a 26.6 %. Mortality was high and survival was lower in males, without exceeding two years after the diagnosis.

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.

Does obesity really affect renal transplantation outcomes?

INTRODUCTION: Kidney transplantation is the treatment of choice for patients with stage 5 chronic kidney disease (CKD). About 60% of CKD patients are overweight or obese at the time of kidney transplantation, and post-transplant obesity occurs in 50% of patients, with a weight gain of 10% in the first year and high risk of cardiovascular mortality. Obesity is associated with an increased risk of delayed graft function (DGF), acute rejection, surgical complications, graft loss and mortality. The aim of this study is to assess the clinical evolution of obese and overweight patients that have received a kidney transplant, based on short- and long-term complications associated with a higher BMI. MATERIAL AND METHODS: A descriptive, observational, cross-sectional study was conducted with 104 kidney or pancreas-kidney transplant patients between March 2017 and December 2020, with a follow-up until April 2021. For comparative analysis, patients were grouped according to BMI. RESULTS: Mean age was of 56.65 years, 60.6% male and 39.4 % female. Overweight patients experienced prolonged surgeries, more surgical wound dehiscence, delayed graft function, hernias, proteinuria and more indications for renal biopsies. Additionally, obese patients displayed more DGF, indications for renal biopsies, proteinuria, development of diabetes mellitus, atrial fibrillation and needed prolonged hospital stays. CONCLUSIONS: Despite a high prevalence of comorbidity in the overweight and/or obese population, we found no reduction in patient and/or graft survival. However, longer follow-up is needed.

Laser safety, warnings, and limits in retrograde intrarenal surgery.

OBJECTIVE: To analyze the current information about laser safety in retrograde intrarenal surgery (RIRS), focusing on the two main laser technologies that we use in urology, the holmium:yttrium-aluminum-garnet (Ho:YAG) laser, and the thulium fiber laser (TFL). METHODS: Narrative overview of the most relevant articles published in MEDLINE and Scopus databases about this subject. RESULTS: TFL and Ho:YAG laser at similar settings (0.2 J/40 Hz) have similar volume-averaged temperature increase and the average heating rate increase proportionally to laser power, especially when high frequencies are used. Recent preclinical data, comparing both laser technologies at different laser settings, agreed that when the delivered energy increases in expenses of higher frequencies, the thermal damage increases too. Higher frequencies, despite of the rise of temperature in the irrigation medium, can cause accidental thermal lasering lesions. CONCLUSION: The use of low frequency settings and a proper irrigation is critical to avoid thermal injury in endoscopic laser lithotripsy. In addition, the use of laser safety eyeglasses is recommended in Ho:YAG and TFL ELL.

Percutaneous ablation of renal tumors: Long-term outcomes.

OBJECTIVE: To evaluate the long-term outcomes of renal tumor ablation, analyzing efficacy, long-term survival, and factors associated with complications and therapeutic success. MATERIAL AND METHODS: We retrospectively reviewed 305 ablations (generally done with expandable electrodes) of 273 renal tumors between May 2005 and April 2019. We analyzed survival, primary and secondary efficacy, and complications according to various patient factors and tumor characteristics. RESULTS: Mean blood creatinine was 1.14 mg/dL before treatment and 1.30 mg/dL after treatment (p < 0.0001). Complications were observed in 13.25% of the ablations, including major complications in in 4.97%. Complications were associated with age (p = 0.013) and tumor diameter (p < 0.0001). Primary efficacy was 96.28%. Incomplete ablation was more common in lesions measuring > 4 cm in diameter (p = 0.002). Secondary efficacy was 95.28%. The only factor associated with the risk of recurrence was the size of the tumor (p = 0.02). Overall survival was 95.26% at 1 year, 77.01% at 5 years, and 51.78% at 10 years, with no differences between patients with malignant and benign lesions. Mortality was higher in patients with creatinine >1 (p = 0.05) or ASA > 2 (p = 0.0001). CONCLUSIONS: Percutaneous ablation is extremely efficacious for renal tumors; it improves the prognosis of renal carcinoma to the point where it does not differ from that of benign lesions. Complications are rare. Like survival, complications are associated with age and overall health status.

Percepción de la calidad de vida de personas receptoras de trasplante renal en etapas temprana y tardía / Quality of life in kidney transplant recipients in early and late stages: a qualitative study

Introducción: la enfermedad renal crónica incluye diversos tratamientos, el trasplante renal es el procedimiento electivo debido a la mejora de la calidad de vida y la supervivencia frente a otros tratamientos. El paciente experimenta situaciones abrumadoras por la complejidad que implica la adaptación. Objetivo: comparar la percepción de calidad de vida postrasplante en la etapa temprana y tardía en cuatro dimensiones. Metodología: estudio con enfoque cualitativo, aplicación del diseño fenomenológico con alcance de saturación de categorías. La calidad de vida se enfocó en cuatro dimensiones: bienestar físico, bienestar emocional, relaciones interpersonales y bienestar material. Se utilizó la herramienta Atlas ti V.20 para capturar datos, evaluar y visualizar las relaciones entre entrevistas para crear redes semánticas. Resultados: se entrevistó a 10 personas sobre su percepción de calidad de vida posterior al trasplante renal en la etapa temprana y tardía, independientemente de su situación funcional, social, psicológica y económica. Conclusiones: la calidad de vida percibida en las personas receptoras de trasplante renal son el constructor de sus actividades y su reintegración a ellas, preservando hechos como el mantenimiento de su estado de salud, vínculo de sus relaciones y producción laboral. Estudiar dicha percepción ampliada en las dimensiones estudiadas describen mejor el estado progresivo en la recuperación... (AU)

Introduction: Chronic kidney disease includes various treatments, Kidney Transplantation is the elective procedure, due to the improvement in quality of life and survival compared to other treatments. The patient experiences overwhelming situations due to the complexity that adaptation implies. Objective: To compare the perception of quality of life after transplantation in the early and late stages in four dimensions. Methodology: Study with a qualitative approach, application of the phenomenological design with a scope of saturation of categories, it is worth mentioning that the quality of life was focused on four dimensions: physical well-being, emotional well-being, interpersonal relationships and material well-being. The tool Atlas ti V.20 was used to capture data, evaluate and visualize the relationships between interviews to create semantic networks. Results: 10 patients were interviewed about the perception of quality-of-life post-transplant improvement in early and late stages, regardless of their functional, social, psychological and economic situation; Conclusions: The perceived quality of life in kidney transplant recipients is the construct of their activities and their reintegration into them, preserving facts such as the maintenance of their state of health, the bond of their relationships and labor production. Studying this expanded perception in the dimensions studied better describe the progressive state in recovery.

Estrategias de telesalud en la atención de personas con enfermedad renal crónica: revisión integradora / Telehealth strategies in the care of people with chronic kidney disease: integrative review / Estratégias de telessaúde no atendimento às pessoas com doença renal crônica: revisão integrativa

Objetivo: evaluar las evidencias sobre estrategias de telesalud en la atención de personas con enfermedad renal crónica. Método: revisión integradora de la literatura. La búsqueda de estudios primarios se realizó en seis bases de datos: PubMed/MEDLINE, Web of Science, EMBASE, CINAHL, LILACS y Scopus. La muestra estuvo compuesta por 48 artículos publicados entre 2000 y 2021, la estrategia de telesalud fue aplicada mediante equipo multidisciplinario, médico, enfermero, farmacéutico, nutricionista y trabajador social. De los artículos se extrajo el tipo de estudio, país, estrategia aplicada, escenario, población y profesional. Los estudios fueron seleccionados mediante la lectura de título y resumen (fase 1) y, posteriormente, mediante la lectura completa (fase 2), se los categorizó por estrategia de telesalud. El resumen de resultados se presentó de forma descriptiva y los estudios se clasificaron según el nivel de evidencia. Resultados: el domicilio fue el más representativo en las terapias de diálisis y tratamiento conservador. Se identificaron seis categorías de estrategias de telesalud: dispositivos de monitoreo remoto, teleconsulta, plataforma digital, aplicaciones, estrategias multimodales y contacto telefónico. Conclusión: el uso de esas estrategias para la atención de personas con enfermedad renal crónica tiene diferentes formatos e implementaciones, las mismas son factibles para dicha población en cualquier etapa de la enfermedad y pueden ser aplicadas por diferentes profesionales de la salud especialmente en el ámbito domiciliario. La evidencia ha demostrado que la telesalud favorece la reducción de costos, la accesibilidad a ubicaciones remotas, un mejor seguimiento de la diálisis con resultados positivos sobre el control de los síntomas, la reducción de riesgos y capacitación del paciente.

Objective: to evaluate the evidence about telehealth strategies in caring for people with chronic kidney disease. Method: integrative literature review. The search for primary studies was carried out in six databases: PubMed/MEDLINE, Web of Science, EMBASE, CINAHL, LILACS, and Scopus. The sample consisted of 48 articles published between 2000 and 2021. The telehealth strategy was applied by a multidisciplinary team of doctors, nurses, pharmacists, nutritionis, and social workers. The type of study, country, strategy applied, setting, population, and professional were extracted from the articles. The studies were selected by reading the title and abstract (phase 1) and then reading them in full (phase 2), categorizing them by telehealth strategy. The results were summarized descriptively and the studies were classified according to their level of evidence. Results: the home was the most representative in dialysis and conservative treatment. Six categories of telehealth strategies were identified: remote monitoring devices, teleconsultation, digital platforms, apps, multimodality strategies, and telephone contact. Conclusion: using these strategies for the care of people with chronic kidney disease presents different forms and implementations, being feasible for the renal population at any stage of the disease and applicable by different health professionals with an emphasis on the home environment. The evidence shows that telehealth favors lower cost, accessibility to remote locations, and better monitoring of dialysis with positive resul in symptom control, risk reduction, and patient training.

Objetivo: analisar as evidências sobre as estratégias de telessaúde no atendimento às pessoas com doença renal crônica. Método: revisão integrativa da literatura. A busca pelos estudos primários foi realizada em seis bases de dados: PubMed/MEDLINE, Web of Science, EMBASE, CINAHL, LILACS e Scopus. A amostra foi composta por 48 artigos publicados entre 2000 e 2021, a estratégia de telessaúde foi aplicada por equipe multidisciplinar, médico, enfermeiro, farmacêutico, nutricionista e assistente social. Foram extraídos dos artigos o tipo de estudo, país, estratégia aplicada, cenário, população e profissional. Os estudos foram selecionados por leitura de título e resumo (fase 1) e, após, por leitura completa (fase 2), com sua categorização por estratégia de telessaúde. A síntese dos resultados foi apresentada de forma descritiva e os estudos classificados de acordo com o nível de evidência. Resultados: o domicílio foi o de maior representatividade nas terapias dialíticas e tratamento conservador. Foram identificadas seis categorias de estratégias de telessaúde: dispositivos de monitoramento remoto, teleconsulta, plataforma digital, aplicativos, estratégias multimodalidades e contato telefônico. Conclusão: a utilização dessas estratégias para o atendimento de pessoas com doença renal crônica apresenta diferentes formatos e implementações, sendo viável à população renal em quaisquer fases da doença e aplicável por diferentes profissionais de saúde com ênfase no ambiente domiciliar. As evidências apontaram que a telessaúde favorece a diminuição de custos, acessibilidade aos locais afastados, melhor monitoramento da diálise com resultados positivos no controle dos sintomas, redução dos riscos e treinamento do paciente.

Evaluation of the use of a Renal Health application by kidney transplant recipients / Avaliação do uso do aplicativo Renal Health por transplantados renais / Evaluación del uso de la Aplicación Renal Health por parte de los receptores de trasplante renal

Abstract Objective: to evaluate the use of a renal health application by kidney transplant recipients. Method: a retrospective, observational study with a sample composed of individuals registered in the kidney transplant section of the application from July of 2018 to April of 2021. Demographic data, data entry, time of use, weight, blood pressure, blood glucose, creatinine, medication schedules, appointments, and tests were the variables collected. Descriptive analysis of the data was performed. Results: eight hundred and twenty-three downloads of the application were identified, and 12.3% of those were registered as kidney transplant recipients, the majority from southeastern Brazil (44.9%), 36±11 years old, and female (59.1%). Of the sample, 35.1% entered information such as creatinine (62%), weight (58.2%), and blood pressure (51.8%). Most used the application for one day (63.3%) and 13.9% for more than one hundred days. Those who used it for more than one day (36.7%) recorded weight (69%), medication intake (65.5%) and creatinine (62%), and scheduled appointments (69%). Conclusion: the kidney transplant recipient section of the Renal Health application generated interest in the young population, but showed low adherence throughout the assessed months. These results offer a relevant perspective on the implementation of mHealth technologies in kidney transplantation.

Resumo Objetivo: avaliar o uso do aplicativo Renal Health por transplantados renais. Método: estudo observacional retrospectivo com amostra composta por usuários que realizaram cadastro na seção para transplantados renais do aplicativo de julho de 2018 a abril de 2021. Foram coletadas as seguintes variáveis: dados demográficos, inserção de dados, tempo de uso, registros de peso, pressão arterial, glicemia, creatinina, horários das medicações, consultas e exames. Realizou-se análise descritiva dos dados. Resultados: houve 1.823 downloads do aplicativo e 12,3% cadastraram-se na seção para transplantados renais, a maioria do Sudeste do Brasil (44,9%), com 36±11 anos e do sexo feminino (59,1%). Da amostra, 35,1% inseriram informações como creatinina (62%), peso (58,2%) e pressão arterial (51,8%). A maioria utilizou o aplicativo por um dia (63,3%) e 13,9% por mais de cem dias. Os que utilizaram por mais de um dia (36,7%), inseriram peso (69%), agendaram consultas (69%), medicações (65,5%) e creatinina (62%). Conclusão: a seção para transplantados renais do aplicativo Renal Health despertou interesse na população jovem, mas apresentou baixa adesão ao longo dos meses avaliados. Esses resultados oferecem perspectiva relevante na implementação de tecnologias mHealth no transplante renal.

Resumen Objetivo: evaluar el uso de la aplicación Renal Health por parte de los receptores de trasplante renal. Método: estudio observacional retrospectivo con una muestra compuesta por usuarios que se registraron en la sección de trasplantados renales dentro de la aplicación desde julio de 2018 hasta abril de 2021. Se recolectaron las siguientes variables: datos demográficos, ingreso de datos, tiempo de uso, registros de peso, presión arterial, glucosa en sangre, creatinina, esquemas de medicación, consultas y exámenes. Se realizó un análisis descriptivo de los datos. Resultados: Ocurrieron 1.823 descargas de la aplicación y 12,3% se registró en la sección de trasplantados, la mayoría del sudeste de Brasil (44,9%), con edad de 36±11 años y del sexo femenino (59,1%). De la muestra, 35,1% ingresó información como: creatinina (62%), peso (58,2%) y presión arterial (51,8%). La mayoría utilizó la aplicación durante un día (63,3%) y el 13,9% más de cien días. Quienes lo usaron por más de un día (36,7%), agregaron peso (69%), programación de consultas (69%), medicación (65,5%) y creatinina (62%). Conclusión: la sección para trasplantados renales de la aplicación Renal Health despertó interés en la población joven, pero mostró baja adherencia en los meses evaluados. Estos resultados ofrecen una perspectiva relevante en la implementación de tecnologías mHealth en el trasplante renal.

Update of the recommendations on the management of the SARS-CoV-2 coronavirus pandemic (COVID-19) in kidney transplant patients.

SARS-CoV-2 infection (COVID-19) has had a significant impact on transplant activity in our country. Mortality and the risk of complications associated with COVID-19 in kidney transplant recipients (KT) were expected to be higher due to their immunosuppressed condition and the frequent associated comorbidities. Since the beginning of the pandemic in March 2020 we have rapidly improved our knowledge about the epidemiology, clinical features and management of COVID-19 post-transplant, resulting in a better prognosis for our patients. KT units have been able to adapt their programs to this new reality, normalizing both donation and transplantation activity in our country. This manuscript presents a proposal to update the general recommendations for the prevention and treatment of infection in this highly vulnerable population such as KT.

Caracterización clínica de la Nefropatía por Poliomavirus BK en pacientes trasplantados renales / Clinical characterization of Polyomavirus BK nephropathy in kidney transplanted patients

INTRODUCCIÓN. La nefropatía por poliomavirus BK resulta un problema emergente en el trasplante renal, pues contribuye a la pérdida temprana de los injertos renales. OBJETIVO. Caracterizar clínicamente a los pacientes trasplantados renales con nefropatía por poliomavirus BK. MATERIALES Y MÉTODOS. Estudio observacional, descriptivo, realizado en el Hospital de Especialidades Carlos Andrade Marín en el período 2013-2022, se obtuvo una base de datos anonimizada, 479 pacientes trasplantados renales, de estos se identificaron 37 pacientes que corresponde a un 7,7% con nefropatía por poliomavirus BK, se realizó un análisis con el programa estadístico SPSS v26®. RESULTADOS. La población estuvo caracterizada por pacientes del sexo masculino (56,8%), con una edad media de 48,2 años, el donante cadavérico fue el más frecuente (94,5%), la mayor parte del tratamiento de la nefropatía por poliomavirus BK consistió en cambio de micofenolato sódico a everolimus y se mantuvo con 50% de Tacrolimus y Prednisona (40,5%); al valorar el cambio de los valores de creatinina, los niveles más elevados fueros a los 12 meses cuando la pérdida renal fue temprana (p: 0,042), y de la misma manera a los 12 meses, fueron más elevados los niveles de creatinina cuando el diagnóstico histopatológico fue Nefropatía por Poliomavirus Clase 3 (p: 0,01). DISCUSIÓN. La prevalencia de la nefropatía se mantuvo por debajo del 10% reportado a nivel global, la creatinina empeoró en pacientes con pérdida temprana del injerto renal y con una clase patológica avanzada, hecho reportado en la fisiopatología de la enfermedad. CONCLUSIÓN. La pérdida del injerto renal temprano presentó una creatinina más alta que la tardía. Es recomendable un tamizaje adecuado para la detección temprana del virus BK siendo crucial para prevenir el deterioro de la función renal y limitar la posterior pérdida del injerto.

INTRODUCTION: BK polyomavirus nephropathy is emerging as a significant concern in kidney transplantation, as it contributes to the early loss of renal grafts. OBJECTIVE: The aim of this study was to clinically characterize renal transplant recipients with BK polyomavirus nephropathy. MATERIALS AND METHODS: An observational and descriptive study was conducted at Carlos Andrade Marín Specialties Hospital during the period of 2013 to 2022. An anonymized database comprising 479 renal transplant patients was utilized. Among these, 37 patients, constituting 7.7%, were identified with BK polyomavirus nephropathy. Data analysis was performed using the statistical program SPSS v26®. RESULTS: The study population was predominantly composed of male patients (56.8%) with a mean age of 48.2 years. Deceased donors accounted for the majority (94.5%) of cases. The primary approach for managing BK polyomavirus nephropathy involved transitioning from mycophenolate sodium to everolimus, alongside maintaining a regimen of 50% tacrolimus and 40.5% prednisone. When assessing changes in creatinine values, the highest levels were observed at 12 months, coinciding with early renal loss (p: 0.042). Similarly, at the 12-month mark, elevated creatinine levels were associated with a histopathological diagnosis of Polyomavirus nephropathy Class 3 (p: 0.01). DISCUSSION: The prevalence of nephropathy remained below the globally reported threshold of 10%. Creatinine levels worsened in patients experiencing early graft loss and an advanced pathological classification, aligning with established disease pathophysiology. CONCLUSION: Early renal graft loss was associated with higher creatinine levels compared to delayed loss. Adequate screening for early detection of BK virus is recommended, as it plays a crucial role in preventing renal function deterioration and limiting subsequent graft loss.

Determination of homeodomain interacting protein kinase 2 polymorphisms rs2058265, rs6464214, and rs7456421 in patients with kidney stone.

OBJECTIVE: This study aimed to investigate whether homeodomain interacting protein kinase 2 (HIPK2) polymorphism is associated with renal stone formation in a Turkish population. MATERIALS AND METHODS: A total of 129 patients with calcium nephrolithiasis and 67 sex- and age-matched healthy controls were enrolled in the study. Blood samples were collected into EDTA tubes. The DNA of patients was extracted using a QIAsymphony® automated DNA isolation system. The Chi-square test was applied in the comparisons between the patient and control groups in respect of the differences in the genotype and allele frequencies. RESULTS: No statistically significant difference was found between the groups in terms of single nucleotide polymorphism (SNP) incidence in single allele and double alleles in the rs2058265 and rs6464214 regions (p = 0.13 and 0.37, respectively). The SNP incidence in double alleles in nephrolithiasis patients at rs7456421 was statistically significantly lower than in the control group (p = 0.001). CONCLUSION: Distributions of the genotype and allele of the three polymorphisms (rs2058265, rs6464214, and rs745642 in HIPK2) were not associated with an increased risk of kidney stone in this Turkish population.

OBJETIVO: Investigar si el polimorfismo de la proteína cinasa 2 que interactúa con el homeodominio (HIPK2) está asociado con la formación de cálculos renales en una población turca. MÉTODO: Se inscribieron en el estudio 129 pacientes con nefrolitiasis cálcica y 67 sujetos control sanos, emparejados por sexo y edad. Las muestras de sangre se recogieron en tubos con EDTA. El ADN de los pacientes se extrajo mediante un sistema de aislamiento de ADN automatizado QIAsymphony®. Se aplicó la prueba χ2 en las comparaciones entre los grupos de pacientes y control con respecto a las diferencias de las frecuencias genotípicas y alélicas. RESULTADOS: No se encontraron diferencias estadísticamente significativas entre los grupos en términos de incidencia de polimorfismo de nucleótido simple (PNS) en alelo simple y alelo doble en las regiones rs2058265 y rs6464214 (p = 0.13 y 0.37, respectivamente). La incidencia de PNS en alelos dobles en pacientes con nefrolitiasis en rs7456421 fue menor que en el grupo control, con una diferencia estadísticamente significativa (p = 0.001). CONCLUSIONES: Las distribuciones de genotipo y alelo de los tres polimorfismos (rs2058265, rs6464214 y rs745642 en HIPK2) no se asociaron con un mayor riesgo de cálculos renales en esta población turca.

Nefrectomía totalmente laparoscópica para donante vivo de riñón: Características y desenlaces en una institución de alta complejidad en Colombia. Serie de casos / Total laparoscopic nephrectomy for a living kidney donor: Characteristics and outcomes in a single center from Colombia. Case series

Introducción. El trasplante es la mejor opción de tratamiento para los pacientes con enfermedad renal terminal, sin embargo, existe discrepancia entre las listas de espera y la disponibilidad de órganos a partir de la donación cadavérica. Buscando aumentar el número de órganos disponibles se implementó el trasplante con donante vivo. A partir de la introducción de técnicas mínimamente invasivas para la nefrectomía, el donante vivo ha logrado cifras cercanas al 50 % de los trasplantes realizados en muchas instituciones, debido a los beneficios propios del procedimiento. El objetivo de este estudio fue describir los resultados después de la incorporación del procedimiento totalmente laparoscópico en nuestra institución. Métodos. Se hizo un análisis retrospectivo de las características de los pacientes llevados a nefrectomía para obtención de injerto por técnica totalmente laparoscópica y los resultados en un solo centro en Cali, Colombia, desde noviembre de 2019 hasta octubre de 2022. Los datos fueron obtenidos mediante la revisión de las historias clínicas electrónicas. Resultados. Se realizaron 78 nefrectomías para obtención de injerto con técnica totalmente laparoscópica. El tiempo operatorio promedio fue de 152 minutos, el sangrado promedio fue de 12 ml, la estancia hospitalaria promedio del donante fue de 2,8 días. La tasa de complicaciones fue de 7,6 % (4 pacientes con complicación Clavien-Dindo I y 2 pacientes Clavien-Dindo IIIb). No se presentó ningún caso de mortalidad. Conclusiones. La técnica totalmente laparoscópica resulta ser una técnica segura con baja tasa de morbilidad y excelentes beneficios para los donantes.

Introduction. Kidney transplant is the best treatment option for end-stage renal disease. However, the discrepancy between waiting lists and the availability of organs from cadaveric donation is well known. Organ transplantation with a living donor was implemented to increase the number of organs available. Since the introduction of minimally invasive techniques for nephrectomy, living donors have achieved figures close to 50% of transplants performed in many institutions due to the procedure's benefits. In our country, the experiences described are from the hand-assisted technique. This is the first description after incorporating the laparoscopic procedure. Methods. A retrospective analysis of the characteristics and results of all patients undergoing nephrectomy to obtain a graft using a laparoscopic technique was carried at a single center in Cali, Colombia, from November 2019 to October 2022. The electronic medical records were reviewed to obtain the data. Results. Seventy-eight nephrectomies were performed to obtain a graft with a laparoscopic technique. The mean operating time was 152 minutes, the average bleeding was 12 cc, and the average hospital stay was 2.8 days. The complication rate was 7.6% (four patients with Clavien-Dindo I complication and two Clavien-Dindo IIIb patients). There were no cases of mortality. Conclusions. The laparoscopic technique is safe, with a low morbidity rate and excellent benefits.

Riñon torácico y hernia diafragmática: diagnóstico prenatal y manejo exitoso. Reporte de caso y revisión de la literatura / Thoracic kidney and diaphragmatic hernia: prenatal diagnosis and successful management. Case report and review of the literature

Objetivos: Reportar un caso de diagnóstico prenatal de riñón ectópico intratorácico (REI) con hernia diafragmática y manejo quirúrgico neonatal, y hacer una revisión de la literatura sobre diagnóstico prenatal de REI y el pronóstico perinatal. Materiales y métodos: Se reporta el caso de un feto de 28 semanas en el que se observó imagen ecográfica sugestiva de masa en hemitórax derecho que desplazaba corazón y pulmón; se confirmó que correspondía a un riñón intratorácico. Por laparoscopia, al recién nacido se le colocó una malla en continuidad con el diafragma dejando el riñón en el abdomen, con buena evolución. Se realizó una búsqueda bibliográfica en PubMed, Embase y Cochrane. Se buscaron cohortes, reportes y series de caso de gestaciones con diagnóstico prenatal de riñón intratorácico fetal. Se extrajo información del diseño, la población, el diagnóstico por imágenes, el tratamiento y el pronóstico. Resultados: En la búsqueda se identificaron 8 estudios que cumplieron con los criterios de inclusión y que informan en total ocho casos. El diagnóstico ecográfico mostró REI asociado a hernia diafragmática en todos los sujetos. Se utilizó también la RM fetal en cinco casos. Seis neonatos sobrevivieron sin complicaciones, en uno hubo interrupción voluntaria del embarazo, y otro presentó sepsis y dificultad respiratoria, finalmente fue dado de alta en buenas condiciones. Conclusiones: El REI es una anomalía congénita susceptible de diagnóstico prenatal. La sobrevida a la cirugía correctora en el periodo neonatal es frecuente. La literatura disponible en torno al diagnóstico prenatal de REI es escasa y se limita a reportes de casos.

Objectives: To report a case of prenatal diagnosis of ectopic intrathoracic kidney with diaphragmatic hernia managed surgically after birth, and to conduct a review of the literature on prenatal diagnosis of ectopic intrathoracic kidney and perinatal prognosis. Material and methods: We report the case of a 28-week fetus in which, on ultrasound imaging, a mass was observed displacing the heart and lung in the right hemithorax, which was was confirmed by magnetic resonance (MR) to be an ectopic intrathoracic kidney. After birth, the neonate was approached by laparoscopy to place a mesh in continuity with the diaphragm, leaving the kidney in the abdomen, with good evolution. A search was conducted in the PubMed, Embase and Cochrane databases for cohorts, case reports and case series of prenatal diagnosis of intrathoracic kidney in the fetus. Information was retrieved regarding design, population, imaging diagnosis, treatment and prognosis. Results: The search identified 8 studies that met the inclusion criteria, reporting a total of 8 cases. Ultrasound diagnosis showed ectopic intrathoracic kidney associated with diaphragmatic hernia in all the subjects. Fetal magnetic resonance imaging (MRI) was also used in 5 cases. Conclusions: Ectopic intrathoracic kidney is a congenital abnormality amenable to prenatal diagnosis. Survival after corrective surgery performed in the neonatal period is common. There is a paucity of publications, limited to case reports, regarding the prenatal diagnosis of this condition.

Causas de exclusión de donantes renales vivos en el servicio de trasplante de un hospital de tercer nivel del noroeste de México

Objetivo: Identificar las causas de exclusión de los donantes renales vivos en un centro hospitalario de tercer nivel en el noroeste de México. Materiales y métodos: Estudio de tipo observacional, transversal, descriptivo, retrospectivo. Se realizó la evaluación de los expedientes clínicos de los candidatos vivos para donación renal, que abarcó el periodo comprendido entre el 1 de enero de 2019 y el 31 de diciembre de 2021. Resultados: De los 30 expedientes seleccionados, solo se eligieron 2 (6,6 %) donadores, es decir, existió un índice de rechazo de 28 (93,3 %) de los potenciales candidatos. La edad promedio fue de 40,7 años; al dividirlos en grupos de edad, se observó que el 7,44 % fueron ≤39 años; el 5,31 %, ≥50 años; y el 4,25 %, de 40 a 49 años. Dentro de las principales patologías que originaron el rechazo del donador vivo se encuentran las enfermedades crónicas, como afección renal desconocida, obesidad, diabetes mellitus, hipertensión arterial sistémica y cardiopatías, que representaron el 60,7 %. El deseo de donar es más frecuente entre consanguíneos que en no consanguíneos. En el caso de los consanguíneos, es decir, hermanos, padres, hijos, tíos, etc., el 64,2 % fue rechazado; en los no consanguíneos, el 34,7 %, que incluía a esposos y amigos. Conclusiones: Los resultados obtenidos sobre el índice de masa corporal (IMC) mostraron que el sobrepeso y la obesidad fueron las principales causas de exclusión, circunstancia que es particular en nuestro país respecto a su perfil epidemiológico. La cantidad de donantes vivos en nuestro centro se redujo porque la mayor parte de la población no es sana, padece obesidad y ello repercute al momento de presentarse como candidato a donante.

Objective: To identify the causes for exclusion of living kidney donors at a third-level hospital in northwestern Mexico. Materials and methods: An observational, cross-sectional, descriptive and retrospective study, in which the medical records of candidates for living kidney donation were evaluated from January 1, 2019 to December 31, 2021. Results: Out of the 30 selected records, only 6.6 % (2) were chosen as donors, i.e., the rejection rate of the potential candidates was 93.3 % (28). The average age was 40.7 years; when divided into age groups, it was observed that 7.44 % were ≤ 39 years, 5.31 % were ≥ 50 years and 4.25 % were in the 40-49 age range. The main pathologies that caused the rejection of living donors were chronic diseases such as unknown renal disease, obesity, diabetes mellitus, systemic hypertension and heart diseases, which accounted for 60.7 %. The desire to donate was more frequent among blood relatives than non-blood relatives. In the case of blood relatives, i.e., siblings, parents, children, uncles, aunts, etc., 64.2 % were rejected, while 34.7 % of non-blood relatives, including spouses and friends, were rejected. Conclusions: Based on the body mass index (BMI), the results showed that overweight and obesity were the main causes of exclusion, a situation that is consistent with the Mexican epidemiological profile. The number of living donors at our center has been reduced because most of the population is not healthy and has obesity, which affects the willingness to be a candidate for living kidney donation.

Argumentación ética en la donación de riñón de donante vivo y sano La autodeterminación, voluntad y generosidad superan los riesgos

el gesto altruista del donante vivo y sano de riñón, relacionado genética o sentimentalmente, se basa en autodeterminación, voluntad y generosidad. La argumentación ética alrededor de la donación de riñón de donante vivo y sano se orienta con las éticas principialista y personalista, la dignidad humana, la corporalidad, la divisibilidad del cuerpo, el mal menor y el mal mayor. Hace parte del derecho a la información amplia y suficiente que recibe el donante sobre los riesgos y posibles complicaciones físicas y morales del procedimiento, por medio del comité de bioética y el grupo de trasplantes. Con base en la argumentación ética planteada se procedió a contestar la pregunta de esta investigación: ¿se debe dejar que una persona viva y sana sea sometida a una cirugía que le dejará mononéfrico de por vida, solo por el deseo de ayudar a otro, a pesar de que existen programas activos con donante cadavérico? El objetivo de este artículo es plantear una argumentación ética sobre la donación de riñón de donante vivo y sano que contribuya a una adecuada orientación de su decisión.

the altruistic gesture of the healthy living kidney donor, genetically or sentimentally related, is based on self-determination, willingness, and generosity. The ethical argumentation around living and healthy kidney donation is guided by principled and personalistic ethics, human dignity, corporeality, divisibility of the body, the lesser evil, and the greater evil. It is part of the right to ample and sufficient information that the donor receives about the procedure's risks and possible physical and moral complications through the bioethics committee and the transplant group. Based on the ethical argumentation raised, we proceeded to answer the question of this research: should a living and healthy person be subjected to a surgery that will leave him/her mononephric for life, just because of the desire to help another, even though there are active programs with a cadaveric donor? This article aims to provide an ethical argumentation on living and healthy donor kidney donation that will contribute to an adequate orientation of their decision.

o gesto altruísta do doador de rim vivo e saudável, relacionado genética ou sentimentalmente, está baseado na autodeterminação, vontade e generosidade. A argumentação ética ao redor da doação de rim de doador vivo e saudável é orientada pelas éticas principialista e personalista, pela dignidade humana, pela corporalidade, pela divisibilidade do corpo, pelo mal menor e pelo mal maior. Faz parte do direito à informação ampla e suficiente que o doador recebe sobre os riscos e possíveis complicações físicas e morais do procedimento, por meio do comitê de bioética e do grupo de transplantes. Com base na argumentação ética proposta, procedeu-se a contestar a seguinte pergunta de pesquisa: deve-se deixar que uma pessoa viva e saudável seja submetida a uma cirurgia que a deixará mononéfrico para sempre, somente pelo desejo de ajudar o outro, apesar de existirem programas ativos com doador cadavérico? Nesse contexto, o objetivo deste artigo é apresentar uma argumentação ética sobre a doação de rim de doador vivo e saudável que contribua para uma adequada orientação de sua decisão.