Evaluation of laparoscopic knot training in a silicone model.

INTRODUCTION: in videolaparoscopic surgery, movements are conducted from a twenty times magnified image of an indirect operative field. The video interface used assumes the need for depth perception using two dimensions instead of three. OBJECTIVE: to evaluate the effectiveness of training to perform the laparoscopic knot in a silicone model, in 8-hour courses, and to analyze the correlation of learning outcomes with factors such as: sex, age, laterality, previous knowledge in endosuture and medical specialty. MATERIAL AND METHODS: in this prospective and randomized study, 56 students were evaluated, who took 8-hour courses, with groups of up to ten students. We used: a white box with camera, LCD screen and silicone piece. Four exercises were performed on the silicone mold: right hand, left hand, needle at 45° and back hand. RESULTS: 56 students (mean age = 33.28 years). The female group, n=18, mean age 29.61 years, 17 right-handed and 1 left-handed. The male group, n=38, mean age 34.57 years, 35 right-handers, 1 left-handed and 2 ambidextrous. In both groups, no correlation was observed between the analyzes of well performed knots when correlated with the age or sex of the participants. CONCLUSION: laparoscopic knot training, in silicone molds, in 8 h courses, proved to be effective. Factors such as gender, age, laterality, previous knowledge in endosuture and medical specialty do not interfere with the learning results.

Evaluation of laparoscopic knot training in a silicone model / Avaliação do treinamento de sutura laparoscópica em modelo de silicone

ABSTRACT Introduction: in videolaparoscopic surgery, movements are conducted from a twenty times magnified image of an indirect operative field. The video interface used assumes the need for depth perception using two dimensions instead of three. Objective: to evaluate the effectiveness of training to perform the laparoscopic knot in a silicone model, in 8-hour courses, and to analyze the correlation of learning outcomes with factors such as: sex, age, laterality, previous knowledge in endosuture and medical specialty. Material and Methods: in this prospective and randomized study, 56 students were evaluated, who took 8-hour courses, with groups of up to ten students. We used: a white box with camera, LCD screen and silicone piece. Four exercises were performed on the silicone mold: right hand, left hand, needle at 45° and back hand. Results: 56 students (mean age = 33.28 years). The female group, n=18, mean age 29.61 years, 17 right-handed and 1 left-handed. The male group, n=38, mean age 34.57 years, 35 right-handers, 1 left-handed and 2 ambidextrous. In both groups, no correlation was observed between the analyzes of well performed knots when correlated with the age or sex of the participants. Conclusion: laparoscopic knot training, in silicone molds, in 8 h courses, proved to be effective. Factors such as gender, age, laterality, previous knowledge in endosuture and medical specialty do not interfere with the learning results.

RESUMO Introdução: na cirurgia videolaparoscópica os movimentos são conduzidos a partir de uma imagem magnificada de vinte vezes de um campo operatório indireto. A interface de vídeo utilizada pressupõe a necessidade de percepção de profundidade utilizando duas dimensões ao invés de três. Objetivo: avaliar a eficácia do treinamento de execução do nó laparoscópico em modelo de silicone, em cursos de 8h, e analisar a correlação dos resultados de aprendizagem com fatores como: sexo, idade, lateralidade, conhecimentos prévios em endosutura e especialidade médica. Material e Métodos: Neste estudo, prospectivo e randomizado, foram avaliados 56 alunos, que realizaram cursos de 8h de duração, com turmas de até dez alunos. Foram utilizados: uma caixa branca com câmera, tela de LCD e peça de silicone. No molde de silicone foram executados quatro exercícios: mão direita, mão esquerda, agulha a 45° e back hand. Resultados: 56 alunos (média de idade = 33,28 anos). O grupo feminino, n=18, média de idade 29,61 anos, 17 destras e 1 canhota. O grupo masculino, n=38, média de idade 34,57 anos, 35 destros, 1 canhoto e 2 ambidestros. Em ambos grupos não foram observados nenhuma correlação entre as análises de nós bem executados quando correlacionados com a idade ou sexo dos participantes. Conclusão: o treinamento de nó laparoscópico, em moldes de silicone, em cursos de 8h de duração, mostrou-se eficaz. Fatores como sexo, idade, lateralidade, conhecimentos prévios em endosutura e especialidade médica, não interferem nos resultados do aprendizado.