Introduction. There are various alternatives available for renal pelvis drainage following pyeloplasty. One of them is the use of an internal-external diversion stent, which according to our protocol, is knotted 48 hours following surgery, prior to discharge, and removed 7 days later on an outpatient consultation basis, with no sedation or analgesia required.Objective. To analyze the results of patients under one year of age who underwent open pyeloplasty associated with an outpatient internal-external diversion stent.Materials and methods. A retrospective, descriptive analysis of 28 patients (31 renal units) undergoing surgery from 2011 to 2021 was carried out. Diagnostic methods, indications, surgical approach, and postoperative progression were assessed.Results. 28 patients (23 male) prenatally diagnosed with hydronephrosis confirmed by ultrasonography and/or renogram underwent pyeloplasty at a median age of 3 months (15 days-11 months). Pyeloplasty was conducted according to the Anderson-Hynes technique or dismembered pyeloplasty in 28 renal units, and according to the Culp-DeWeerd technique or spiral flap in 3. In all cases, an internal-external diversion stent was used according to our protocol. Mean hospital stay was 3.5 days (2-7 days), with a good postoperative progression. 2 patients had complications (urinary infection requiring intravenous antibiotics, and pyonephrosis requiring re-pyeloplasty).Conclusions. Using an internal-external diversion stent following pyeloplasty in patients under 1 year of age with ureteropelvic junction obstruction is a simple and safe option that allows for early discharge with outpatient management. It also avoids a second general anesthesia for drainage catheter removal purposes.
Introduction. The various surgical specialties in our center have used the simulation and experimental surgery resources available for their training tasks in minimally invasive surgery (MIS) in an individualized manner. With this learning model, a great dispersion of effort and expense was observed, so it was decided to create a unified program based on the following: shared learning, synergy among specialties, moderation of the economic cost, and rational use of the facilities.Objective. To describe and assess our consensually designed training program in order to consolidate a shared learning strategy that will enable our residents to acquire and perfect surgical skills in MIS.Materials and methods. The program consists of various increasingly complex phases implemented on a continuous basis throughout the period of specialized training in the virtual laboratory and experimental operating room. The assessment methods were based on quantifiable criteria: percentage of efficiency and completion time of the "McGill Inanimate System for Training and Evaluation of Laparoscopic Skills" (MISTELS) exercises at the beginning and end of the program. An economic study was also conducted.Results. 20 residents have completed the program. Mean times show a significant reduction in each of the exercises. The efficiency percentages at the end of the program were higher than at the beginning (p < 0.001). The cost of the program represented a saving of 67.89%. Conclusion.The new MIS training program improved the quality of learning in a safe environment, establishing common criteria among the different specialties and an improved use of resources.
ResumenIntroducción. Existen diversas alternativas para el drenaje de la pelvis renal tras una pieloplastia. Una de ellas es la utilización de un catéter de derivación interno-externo que, según nuestro protocolo, se anuda a las 48 horas posoperatorias previas al alta y se retira a los siete días de forma ambulatoria en consulta, sin necesidad de sedoanalgesia.Objetivos. Analizar los resultados de los pacientes menores de un año intervenidos mediante pieloplastia abierta, asociando un catéter de derivación interno-externo de manejo ambulatorio.Material y métodos. Análisis descriptivo retrospectivo de 28 pacientes (31 unidades renales) intervenidos entre los años 2011 y 2021. Se evaluaron métodos diagnósticos, indicaciones, abordaje quirúrgico y evolución posoperatoria.Resultados. Veintiocho pacientes (23 varones) con diagnóstico prenatal de hidronefrosis confirmado con ecografía y/o renograma, fueron intervenidos mediante pieloplastia a una mediana de edad de tres meses (15 días-11 meses). Se realizó pieloplastia según técnica de Anderson-Hynes o pieloplastia desmembrada en 28 unidades renales y según técnica de Culp-DeWeerd o colgajo en espiral en 3. En todos los casos se utilizó un catéter de derivación interno-externo según protocolo. El tiempo medio de ingreso fue 3,5 días (2-7 días) con buena evolución posoperatoria. Dos pacientes presentaron complicaciones (infección urinaria que requirió antibioterapia intravenosa y pionefrosis que requirió repieloplastia).Conclusiones. Asociar un catéter de derivación interno-externo a la pieloplastia en pacientes menores de un año con estenosis de la unión pieloureteral es una opción sencilla y segura que permite un alta precoz con manejo ambulatorio y evita una segunda anestesia general para la retirada del catéter de drenaje.Palabras Clave: Hidronefrosis; Obstrucción de la unión pieloureteral; Procedimientos quirúrgicos urológicos; Pieloplastia; Catéteres urinarios. Use of internal-external diversion stent in open pyeloplasty in patients under one year of age AbstractIntroduction. There are various alternatives available for renal pelvis drainage following pyeloplasty. One of them is the use of an internal-external diversion stent, which according to our protocol, is knotted 48 hours following surgery, prior to discharge, and removed 7 days later on an outpatient consultation basis, with no sedation or analgesia required.Objective. To analyze the results of patients under one year of age who underwent open pyeloplasty associated with an outpatient internalexternal diversion stent.Materials and methods. A retrospective, descriptive analysis of 28 patients (31 renal units) undergoing surgery from 2011 to 2021 was carried out. Diagnostic methods, indications, surgical approach, and postoperative progression were assessed.Results. 28 patients (23 male) prenatally diagnosed with hydronephrosis confirmed by ultrasonography and/or renogram underwent pyeloplasty at a median age of 3 months (15 days-11 months). Pyeloplasty was conducted according to the Anderson-Hynes technique...
L. Álvarez Martínez y cols.CIRUGÍA PEDIÁTRICA ResumenIntroducción. Las diferentes especialidades quirúrgicas de nuestro centro han usado los recursos de simulación y cirugía experimental para sus tareas de formación en cirugía mínimamente invasiva (CMI) de manera individualizada. Con este modelo de aprendizaje se detectó una gran dispersión de esfuerzos y gasto, por lo que se decidió crear un programa unificado basado en: aprendizaje compartido, sinergia entre especialidades, moderación del coste económico y uso racional de las instalaciones.Objetivo. Describir y evaluar nuestro programa de entrenamiento diseñado por consenso de cara a la consolidación de una estrategia de aprendizaje compartido que permita a nuestros residentes adquirir y perfeccionar habilidades quirúrgicas en CMI.Material y métodos. El programa consta de diferentes fases con complejidad creciente desarrolladas durante todo el periodo de formación especializada de forma continuada en laboratorio virtual y quirófano experimental. Los criterios de evaluación se basaron en criterios cuantificables: porcentaje de eficiencia y tiempo de realización de los ejercicios de McGill Inanimate System for Training and Evaluation of Laparoscopic Skills (MISTELS) al inicio y final del programa. Se realizó también el estudio económico.Resultados. Han completado el programa 20 residentes. Los tiempos medios demuestran una reducción significativa en cada uno de los ejercicios. Los porcentajes de eficiencia al final fueron mayores que al inicio del programa (p < 0,001). El coste del programa supuso un ahorro del 67,89%.Conclusión. El nuevo programa de entrenamiento en CMI mejoró la calidad de aprendizaje en un entorno seguro, estableciendo criterios comunes entre las diferentes especialidades y un mayor aprovechamiento de los recursos.
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