Browsing by Author "Navia, Alfonso "

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    Desarrollo y validación de modelos de simulación en cirugía plástica.
    (2020) Navia, Alfonso; Dagnino, Bruno; Pontificia Universidad Católica de Chile. Escuela de Medicina
    Introducción: La otoplastía es un procedimiento para corregir orejas prominentes. La simulación ha adquirido gran relevancia en la educación médico-quirúrgica. Objetivos: Desarrollar un modelo de otoplastía a bajo costo y validarlo para su entrenamiento. Material y Métodos: Diseñamos un modelo sintético de oreja prominente. Se utilizó un método Delphi para crear una escala específica para otoplastía (EVOPUC) y un cuestionario de antropometría (CLA). Evaluamos diez participantes, 5 expertos (cirujanos plásticos) y 5 principiantes (estudiantes). Cada participante realizó una otoplastía que se registró en video y fue evaluada por 3 expertos ciegos utilizando una escala general (OSATS), EVOPUC, CLA y el tiempo operatorio. El grupo principiante realizó cuatro sesiones de entrenamiento con expertos. Fueron reevaluados utilizando la misma metodología. Los expertos completaron una encuesta de validez de apariencia y contenido. Resultados: El costo de cada modelo fue 5 dólares. Tras el entrenamiento, los novatos mejoraron significativamente su desempeño (p <0.05), comparables a los expertos. El 100% de los expertos calificó el modelo como muy útil, siendo considerado una herramienta para el entrenamiento de residentes. Conclusiones: Desarrollamos un modelo de otoplastía de bajo costo, logrando una adquisición significativa de habilidades en un grupo principiante, con resultados similares a cirujanos plásticos experimentados.
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    Have We Passed the Peak? The COVID-19 Plastic Surgery Webinar Pandemic
    (2020) Navia, Alfonso ; Berner, Juan Enrique ; Pereira, Nicolas ; Reissis, Dimitris ; Rakhorst, Hinne; Cuadra, Alvaro
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    MicrosimUC: Validation of a Low-Cost, Portable, Do-It-Yourself Microsurgery Training Kit
    (2021) Navia, Alfonso ; Tejos, Rodrigo ; Canahuate, Sebastian ; Machuca, Eduardo ; Searle, Susana ; Cuadra, Alvaro ; Dagnino, Bruno
    Background Microsurgery depends largely on simulated training to acquire skills. Courses offered worldwide are usually short and intensive and depend on a physical laboratory. Our objective was to develop and validate a portable, low-cost microsurgery training kit.
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    Optimizing the Chicken Wing Anatomy: Nomenclature Review and Description for Microsurgery and Supermicrosurgery Training
    (2020) Navia, Alfonso ; Tejos, Rodrigo ; Yañez, Ricardo ; Cuadra, Alvaro ; Dagnino, Bruno
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    Repair of Inferior Alveolar Nerve in Orthognathic Surgery Simulator (RIANOS): A Novel, Open-Source, Combined 3D Printed, and Ex-Vivo Chicken Sciatic Nerve Training Model
    (2024) Navia, Alfonso; Tapia Coron, Sebastián Andrés; Rojas Sepulveda, Maria Fernanda; Rojas, Francisco; Vargas Díaz, Alex Patricio; Guerra, Claudio; Cuadra, Alvaro; Searle Ferrari, Susana Valeria; Ramírez, Hernán; Teuber Lobos, Cristián Andrés
    Objective: Accidental transection of the inferior alveolar nerve (IAN) during bilateral sagittal split osteotomies (BSSO) has a reported incidence of up to 7%, determining important sensory disturbances in patients. Proper repair demands the need of microsurgical anastomosis skills. No previous training models have been described to simulate this. Therefore, we present a validated simulation model for intraoral repair of transected IAN.Methods: A CT scan of an orthognathic surgery patient was modified and a 3D model of a mandible with BSSO was printed. Chicken thigh anatomy was reviewed, and 2.5 mm sciatic nerves were dissected and mounted in the model. In order to simulate intraoral work depth, it was put inside a dental phantom or medical glove box. The model was tested by a group of experts (n = 12), simulating a transected IAN repair inside the mouth with both loupes and a double visor surgical training microscope. A survey was conducted to assess Face and Content validity.Results: The model was named RIANOS after Repair of Inferior Alveolar Nerve in Orthognathic Surgery Simulator. The printing cost of each model was approximately US$3 and the design file is open-source and available for download. All experts “Strongly Agreed” that the model was useful for training inferior alveolar nerve microsurgical repair and would consider implementing it with their residents.Conclusions: We developed a low cost, reproducible, open-source simulator for IAN injury repair training during BSSO. Face and Content validity was achieved through evaluation by a group of experts.
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    Resultados de un programa nacional de trasplante cardiaco pediátrico: fortalezas y debilidades. Results of a national program of pediatric heart transplantation: strengths and weakness.
    (2017) Becker Rencoret, Pedro Antonio; Besa, Santiago; Riveros, Sergio; González Foretic, Rodrigo Vicente; Navia, Alfonso; Dellepiane, Paulina; Springmüller P., Daniel; Urcelay Montecinos, Gonzalo