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A Simulation Model to Support Laparoscopic Pyloromyotomy Teaching.

INTRODUCTION: A key concern regarding laparoscopic pyloromyotomy (LP) lies with the process of learning this skill. The learning processes for open pyloromyotomy and LP appear to be different, with an earlier increased risk of perforation or incomplete pyloromyotomy (IP) for LP. Our aim was to develop a simple simulation tool to reduce these specific complications.

MATERIALS AND METHODS: A model of hypertrophic pyloric stenosis was created and inserted into a pediatric laparoscopic surgery simulator. A cohort of experts completed a six-item questionnaire, using a 4-point scale regarding the model's realistic nature and accuracy. Evaluation of the LP procedure was based on a dedicated Objective Structured Assessment of Technical Skills score. Surgical residents and students were enrolled for the final evaluation to assess the relative performance of trainees who had practiced with this model (Group 1) versus those who had observed its use (Group 2).

RESULTS: Reproducibility of the model construction was considered to be satisfactory. The experts agreed that the model accurately simulated essential components of LP (mean 3.03 ± 0.7). They scored significantly better than the residents (27.2 ± 1.8 versus 22.8 ± 2.9; P < .001), with a lower rate of complications. Group 1 (39 trainees) performed significantly better than Group 2 (26 trainees), with a significant decrease in the risk of an IP (P < .05).

CONCLUSIONS: This model appears to be sufficiently accurate to teach LP. In light of this, it can be considered to be an efficient tool for LP simulation teaching in our fellows' educational program.

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