Development and validation of a realistic type III esophageal atresia simulator for the training of pediatric surgeons

ABSTRACT Background The technical complexity and limited casuistry of neonatal surgical pathology limit the possibilities of developing the necessary technical competencies by specialists in training. Esophageal atresia constitutes the paradigm of this problem. The use of 3D models for training is a promising line of research, although the literature is limited. Methods We conceptualized, designed, and produced an anatomically realistic model for the open correction of type III oesophageal atresia. We validated it with two groups of participants (experts and non-experts) through face, construct, and content validity questionnaires. Results The model was validated by 9 experts and 9 non-experts. The mean procedure time for the experts and non-experts groups was 34.0 and 38.4 minutes respectively. Two non-experts did not complete the procedure at the designed time (45 minutes). Regarding the face validity questionnaire, the mean rating of the model was 3.2 out of 4. Regarding the construct validity, we found statistically significant differences between groups for the equidistance between sutures, 100% correct in the expert group vs. 42.9% correct in the non-expert group (p=0.02), and for the item “Confirms that tracheoesophageal fistula closure is watertight before continuing the procedure”, correctly assessed by 66.7% of the experts vs. by 11.1% of non-experts (p=0.05). Concerning content validity, the mean score was 3.3 out of 4 for the experts and 3.3 out of 4 for the non-experts (p=0.32). Conclusions The present model is a cost-effective, simple to produce, and validated option for the training of open correction of type III oesophageal atresia. Future studies with larger sample sizes and blinded validators are needed before drawing definitive conclusions. Funding None