Comparison between 3 models for training in superficial wound closure

Comparación entre 3 modelos para el entrenamiento en el cierre de una herida superficial
Alan Isaac Valderrama-Treviñoa, Juan José Granados Romeroa,b, Carlos Aarón Méndez-Celisa, Jonathan Chernitzky-Camañoa, Baltazar Barrera Merac, Eduardo Montalvo-Javéa,b, Rubén Argüero Sáncheza

a Departamento de Cirugía, Facultad de Medicina, UNAM, Ciudad de México, México
b Servicio de Cirugía General, Hospital General de México, Ciudad de México, México
c Departamento de Fisiología, Facultad de Medicina, UNAM, Ciudad de México, México

Recibido 11 julio 2016, Aceptado 17 septiembre 2016

Palabras Clave

Simulación, Docencia médica, Ética


Simulation, Medical education, Ethics


Introduction: Medical simulation has been used as a teaching aid in diagnostic and therapeutic procedures, medical concepts, decision making, ethical aspects, and teamwork with undergraduates, doctors, and other health professionals.

Objectives: To develop a skin simulator for surgical training in basic skills in medical undergraduates.

To evaluate the acquisition of basic skills in surgery in a group of undergraduates.

Methods: A group of 90 second year medical students of the Faculty of Medicine of the Autonomous Unviversity of Mexico were evaluated during two periods on the acquisition of basic skills and management instruments for closing a simulated shallow wound. They were divided into three groups, according to the use of biological/non-biological models.

Statistical analysis: Comparison of the groups using the analysis of variance with a factor, ANOVA test.

Results: A total of 6 simulators were constructed for each silicone cartridge, obtaining a surface sheet 2-4mm thick, with elastic behaviour and a soft, smooth, flexible and resilient consistency. The final evaluations of the three groups were compared. A difference was found between using a skin simulator and pig leg compared to the use of rabbit in the final evaluation of Sarnoff and subdermal sutures.

Conclusions: A better acquisition of surgical skills was observed when using a non-biological simulator, probably because of the constant training and easy manipulation of the model.