Students' perceptions and usage of short anatomy videos: a preliminary study / Percepciones de los estudiantes y el uso de videos cortos de anatomía: un estudio preliminar

The efficacy of videos in anatomy education is still being debated. It appears that one of the major factors discouraging learners to use videos has been their length. To counteract this, 24 short videos (the longest lasting 1 minute and 13 seconds), were created for a course on musculoskeletal anatomy. Videos focused on identification of muscles of the limbs and their relations by area. The aim of this preliminary study was to assess students' perception of value of the videos and their utilisation. The number of views for each video was recorded. A questionnaire based survey was carried out focusing on students' perception of the educational usefulness of the videos. On average, each video had 339.5 views. Out of 312 students enrolled in the course, 210 completed the survey (67.3 % response rate). A total of 181 respondents (86.2 %) watched the videos and a majority perceived them useful in: Learning about the anatomy of the limbs (68 %), preparation for the laboratory (56.9 %), post-laboratory revision (65.6 %) and preparation for the practical test (66.3 %). Asked for feedback, students requested an increase in the number of videos to include structures other than muscles. Students reported to perceive videos as a useful resource in their musculoskeletal anatomy course. The shortness of the videos made them easy to access and use repeatedly. Future, more in-depth studies, based on the utilisation of the existing and newly produced videos, might throw more light on their full educational potential.

Actualmente, aún se está debatiendo la eficacia de los videos en la educación de la anatomía. Posiblemente, uno de los principales factores que desalientan a los estudiantes a usar videos ha sido el tiempo de duración. Para contrarrestar esto, se crearon 24 videos cortos (el más duradero de 1 minuto y 13 segundos) para un curso sobre anatomía musculoesquelética. Los videos se enfocaron en la identificación de los músculos de los miembros y sus relaciones por área. El objetivo de este estudio preliminar fue evaluar la percepción de los estudiantes sobre el valor de los videos y su utilización. Se registró el número de visitas para cada video. Se llevó a cabo una encuesta basada en cuestionarios que se centraron en la percepción de los estudiantes de la utilidad educativa de los videos. En promedio, cada video tuvo 339,5 visitas. De los 312 estudiantes matriculados en el curso, 210 completaron la encuesta (67,3 % de índice de respuesta). Un total de 181 encuestados (86,2 %) vieron los videos y la mayoría los percibieron útiles en: Aprender sobre la anatomía de los miembros (68 %), preparación para el laboratorio (56,9 %), revisión posterior al laboratorio (65,7 %) y preparación para la prueba práctica (66,3 %). Cuando se les pidió retroalimentación, los estudiantes solicitaron un aumento en la cantidad de videos para incluir estructuras distintas de los músculos. Los estudiantes informaron que perciben a los videos como un recurso útil en el curso de anatomía musculoesquelética. La brevedad de los videos los hizo de fácil acceso y posibles de utilizar repetidamente. Estudios más amplios a futuro, basados en la utilización de los videos existentes, como también aquellos producidos recientemente, podrían arrojar más luz sobre su total potencial educativo.

The use of anatomical models for learning anesthesia techniques in oral surgery.

Aim: The objective of this work is to present a new collaborative method for teaching administration of anesthetic block in dentistry, with three-dimensional anatomical models used to improve learning and thereby increase safety, reduce anxiety, and improve the performance of students during the administration of anesthesia in the patients. Materials and Methods: Three-dimensional (3D) models of skulls were made that reproduced all innervations of the V th cranial nerve (trigeminal nerve), as well as some blood vessels, glands, and muscles of mastication. For teaching the local anesthetic techniques we prepared pictures and videos of the administration of anesthesia in the models , which were presented to 130 students in two universities in Brazil. With the help of the models the students could follow the path of the nerves to be anesthetized and identify the anatomical points of reference for the correct positioning of the needle in the tissues. After the presentation the students answered a questionnaire aiming to assess the effect of the 3D models on learning. Results: Eighty-eight percent of students rated the material as excellent, 12% as good, 0% as regular, and 0% as bad (unnecessary materials). After the presentation, 70% of the students felt confident about being able to achieve the nerve block in patients. Conclusion: When exposed to an appropriate method, students recognized the importance of knowledge of anatomy for learning local anesthetic techniques. This method improved the quality of education and increased patient safety during the first injection.