Browsing by Author "Vela Ulloa, Javier Ignacio"

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    A new approach for the acquisition of trauma surgical skills: an OSCE type of simulation training program
    (2022) Ortiz Koh, Catalina Alejandra; Contreras Bertolo, Caterina; Vela Ulloa, Javier Ignacio; Belmar, Francisca; Paul, Ivan; Achurra Tirado, Pablo; Varas Cohen, Julián
    Background Worldwide, trauma-related deaths are one of the main causes of mortality. Appropriate surgical treatment is crucial to prevent mortality, however, in the past decade, general surgery residents’ exposure to trauma cases has decreased, particularly since the COVID-19 pandemic. In this context, accessible simulation-based training scenarios are essential. Methods A low-cost, previously tested OSCE scenario for the evaluation of surgical skills in trauma was implemented as part of a short training boot camp for residents and recently graduated surgeons. The following stations were included bowel anastomosis, vascular anastomosis, penetrating lung injury, penetrating cardiac injury, and gastric perforation (laparoscopic suturing). A total of 75 participants from 15 diferent programs were recruited. Each station was videotaped in high defni tion and assessed in a remote and asynchronous manner. The level of competency was assessed through global and specifc rating scales alongside procedural times. Self-confdence to perform the procedure as the leading surgeon was evaluated before and after training. Results Statistically signifcant diferences were found in pre-training scores between groups for all stations. The lowest scores were obtained in the cardiac and lung injury stations. After training, participants signifcantly increased their level of competence in both grading systems. Procedural times for the pulmonary tractotomy, bowel anastomosis, and vascular anastomosis stations increased after training. A signifcant improvement in self-confdence was shown in all stations. Conclusion An OSCE scenario for training surgical skills in trauma was efective in improving profciency level and self confdence. Low pre-training scores and level of confdence in the cardiac and lung injury stations represent a defcit in resi dency programs that should be addressed. The incorporation of simulation-based teaching tools at early stages in residency would be benefcial when future surgeons face extremely severe trauma scenarios. Keywords Trauma surgery · Simulation training · Surgical training · Surgical education tec
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    Elaboración de un simulador de trauma torácico a partir de un torso cadavérico utilizando tecnología de imágenes digitales e impresión 3d
    (Sociedad de Cirujanos de Chile, 2021) Spoerer Ruiz-tagle Sebastian; Caro Pinto, Iván; Vela Ulloa, Javier Ignacio; Contreras Bertolo, Caterina; Ortiz Durán, Constanza Catalina; Achurra Tirado, Pablo Andrés; Varas Cohen, Julián Emanuel; Ramos Perkis, Juan Pablo; Jarufe Cassis, Nicolás Patricio; Riquelme Pizarro, Carlos Rodrigo; Garrido Cisterna, Francisco Javier; Inzunza Hernández, Oscar Alejandro
    To describe the design and creation of a high-fidelity thoracic trauma surgery simulation model incorporating 3D printing technology using a cadaveric human torso as a model. Materials and Method: This is a descriptive study that aims to illustrate the creation process of a thoracic trauma surgery simulation model throughout the incorporation of prototypes and dynamic iteration tech-nologies. Results: A high-fidelity reusable thoracic trauma surgery simulation model was created from the digitalization of a cadaveric torso using a computed tomography scan. Throughout digital reconstruction tools, the subcutaneous, muscular, and skeletal structures were modeled from images obtained before and after an anterolateral thoracotomy. Using 3D printing and synthetic materials, a high-fidelity thoracic cavity was built so that perfused and ventilated porcine heart and lungs could be placed. A thoracotomy patch for the anterolateral thoracotomy was designed in a reusable and low-cost fashion. This simulation model is suitable for high fidelity training in the surgical management of cardiopulmonary traumatic injuries. Conclusion: The described methodology allowed the creation of a simulation model for training and assessment of surgical skills in thoracic trauma. The main compo-nents of the simulation model are made from reusable materials, broadening access to low-cost, high fidelity training.
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    Innovative perfused cadaveric model for complete mesocolic excision
    (2024) Jarry Trujillo, Cristian Ignacio; Vela Ulloa, Javier Ignacio; Varas Cohen, Julian Emanue; Soza, Francisco; Corvetto Aqueveque, Marcia Antoniao; Heriot, Alexander; Warrier, Satish; Larach Kattan, José Tomas