An interactive online 3D model of the heart assists in learning standard transesophageal echocardiography views

PurposeTransesophageal echocardiography (TEE) is becoming a standard imaging tool during cardiac surgery as well as an important diagnostic tool in cardiology and in intensive care, resulting in an increasing demand for TEE training. To address the problem of limited time for learning during TEE studies, we have developed a novel online application that allows users to visualize each of the 20 standard diagnostic TEE views in conjunction with a three-dimensional (3D) heart model that can be rotated and “cut away” above the echo plane to reveal the internal cardiac structures. This study is an evaluation of the educational benefit of this application.MethodsThe application was evaluated using a pre-test/post-test design assessing the improvement of subjects’ test scores following three days of access to the application. The subjects were postgraduate fellows in anesthesia, cardiology, and cardiac surgery.ResultsTen subjects showed a significant increase (31%) in their test scores after an average of 130 min of access to the application over a three-day period (P < 0.001, effect size = 1.9). Using five-point Likert scales, the users indicated that the application was a useful addition to their training (4.7), they would recommend the application to their colleagues (4.9), and they found the application easy to use (4.4).ConclusionThe large improvement in test scores during a short period of study and the high level of satisfaction across all of the disciplines indicates that the application is a useful adjunctive tool for learning TEE. It is now being used in TEE training worldwide.RésuméObjectif L’échocardiographie transœsophagienne (ÉTO) est en passe de devenir un outil d’imagerie standard pendant la chirurgie cardiaque ainsi qu’un outil diagnostique important en cardiologie et aux soins intensifs. Par conséquent, la demande de formation en ÉTO augmente. Afin de pallier le problème du manque de temps d’apprentissage pendant les examens d’ÉTO, nous avons mis au point une nouvelle application en ligne qui permet aux utilisateurs de visionner chacune des 20 coupes diagnostiques standard de l’ÉTO en conjonction à un modèle de cœur tridimensionnel (3D) qui peut être tourné et « découpé » au-dessus de la coupe échocardiographique pour révéler les structures internes du cœur. Notre étude a évalué les avantages éducationnels de cette application.Méthode L’application a été évaluée à l’aide d’une méthode de test avant / après examinant l’amélioration des notes des sujets à l’examen après avoir eu accès à l’application pendant trois jours. Les participants à l’étude étaient des stagaires post-universitaires en anesthésie, en cardiologie et en chirurgie cardiaque.Résultats On a observé une augmentation significative (31 %) des notes à l’examen chez 10 participants après qu’ils eurent passé une moyenne de 130 minutes à accéder à l’application sur une période de trois jours (P < 0,001, taille de l’effet = 1,9). À l’aide d’une échelle de Likert en cinq points, les utilisateurs ont indiqué que l’application était un ajout utile à leur formation (4,7), qu’ils recommanderaient l’application à leurs collègues (4,9), et qu’ils ont trouvé que l’application était facile à utiliser (4,4).Conclusion L’amélioration considérable des notes à l’examen en l’espace d’une courte période d’étude et le niveau élevé de satisfaction, indépendamment de la spécialité, indiquent que l’application est un outil supplémentaire utile pour apprendre l’ÉTO. Il est désormais utilisé dans la formation en ÉTO partout dans le monde.

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