Desenvolvimento e Validação de um Aplicativo Móvel para o Ensino de Eletrocardiograma

Abstract

Introduction The interpretation of the electrocardiogram (ECG) is fundamental for the identification of cardiovascular diseases, which are among the main causes of death in the world. The acquisition of this competence is essential in the training of the general practitioner and the use of new teaching tools, based on technology such as the use of mobile learning, can facilitate the acquisition of this knowledge. Objectives The objective of this study was to develop and evaluate the usability and the potentiality for the use in medical education of a mobile teaching application for ECG interpretation. Methods With the participation of two health professors and a computer scientist, a systems analyst, a programmer and a graphic designer, a mobile application was developed to teach ECG interpretation using the Java language. For validation analysis, a usability evaluation questionnaire based on the System Usability Scale (SUS) and a questionnaire used to evaluate the suitability of software for use in medical education, previously translated into Portuguese and applied in Brazil, were used. Results The “ECG Fácil” application was developed for off-line use and free access on iOS and Android platforms. In the validation phase of the application, a total of 109 students had free access to the mobile application for 6 weeks and then evaluated usability through a SUS-based questionnaire. The answers to the questionnaire showed good reliability, according to the validation analysis by Cronbach’s alpha coefficient (value: 0.74), and the application presented an excellent acceptance with a mean score on the SUS scale of 85.3. Meanwhile, fifteen faculty members evaluated the application through the questionnaire used to assess the suitability of software for use in medical education, with most agreeing with items indicating that it is suitable for use in medical education. Conclusion The “ECG Fácil” application was considered to be of good usability by students and suitable for educational purpose by teachers. Future studies with this application will be needed to assess the acquisition and retention of knowledge about ECG interpretation by students.

A Health App for Evidence-Based Postpartum Information: Development and Validation Study

“…According to literature, a SUS score above 68 indicates acceptable usability, whereas a score of 85 or above is related to excellent approval of software or applications. The mean SUS score for the Towards Motherhood app reached these parameters, as seen in a broad examination of the SUS [15,17].…”

Benchmarking of mobile apps on heart failure

“…Deleting repeated applications (n = 257) Cardiac monitors (28), cardiac calculators ( 7), animals (4), echocardiograms ( 24), cardiac auscultation ( 9), vital signs (11), magazines/guidelines/ congresses (12), other diseases (61), anatomy/physiology ( 9), cardiovascular health (20), cardiac arrest ( 6), physical examination (6), cardiovascular risk ( 14), various applications (31).…”

“…The SUS average is 68 points; below this value, the product has usability problems. Software that scores above 85 has excellent acceptance by users (12) .…”

Auxílio ao estudante de medicina baseado nos principais erros cometidos durante prova prática / Aid to medical student based on the main mistakes made during practical proof

“…Apesar da simples execução, seu entendimento não é claro e objetivo, provavelmente por sua relação com conceitos básicos da física, associado ao ensino mais voltado para teoria que para a prática 9,10 . Além disso, existe uma concepção entre os acadêmicos de que o ECG é de difícil entendimento, por exigir conhecimentos sobre anatomia, fisiologia cardíaca e vetores elétricos 13 . Entre estudantes de medicina e médicos, é comum a interpretação do ECG ainda ser um dos desafios nas provas universitárias e nos exames das residências médicas 11 .…”

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