Key result
Smartphone-based CABG self-care app achieves high usability, with ~91% of patients rating it good.
Why the study?
In Iran, there was no effective smartphone application specifically designed to educate patients on self-care following open-heart surgery such as CABG.
Does a smartphone-based self-care application demonstrate favorable usability and user satisfaction in patients who have undergone coronary artery bypass grafting (CABG)?
Does a smartphone-based self-care application demonstrate favorable usability and user satisfaction in patients who have undergone coronary artery bypass grafting (CABG)?
A newly developed Android smartphone-based self-care application for post-CABG patients demonstrated high usability and user satisfaction (mean QUIS score 7.9/9), showing promise as a complementary digital tool for post-discharge education and monitoring.
Answers are grounded in this paper and cite their sources.
High usability supports app refinement for CABG self-care; leaves open effects on adherence or outcomes.
In recent years, the use of mobile applications for medical care education purposes has gained considerable attention. However, in Iran, there is no effective application specifically designed for post-open-heart surgery care to educate patients on self-care following cardiac surgery. Therefore, the present study was conducted with the aim of designing and evaluating a smartphone-based self-care application for patients undergoing coronary artery bypass grafting (CABG). This applied research focused on technology development was carried out in four phases during 2024–2025. The first phase involved identifying the educational needs of patients undergoing CABG through a review of relevant literature and articles. The second phase entailed collecting the necessary self-care content from credible sources, resulting in the development of 41 educational topics presented in text and video formats, which were subsequently validated by experts. In the third phase, the application was designed and approved by specialists. In the fourth phase, the application was evaluated by 35 patients who had undergone cardiac surgery using the standardized Questionnaire for User Interaction Satisfaction (QUIS). Data analysis was performed using SPSS software version 21, employing descriptive statistical methods to assess the application. Among the 35 participants, 60.0% were male, 57.1% were aged 51–60 years, and 51.4% had a high school diploma or lower educational attainment. Regarding usability, 91.4% of patients rated the application as good, 5.7% as moderate, and 2.9% as poor. The mean overall evaluation score for the application was 7.9 ± 1.032 (range: 0–9). The highest mean scores were observed for user learnability (8.2 ± 0.84) and overall application capabilities (8.6 ± 0.54). The developed smartphone-based self-care application demonstrated favorable usability and user satisfaction among patients undergoing CABG. These findings suggest that the application may serve as a complementary digital tool to support post-discharge self-care. However, clinical effectiveness was not evaluated in the present study, and further studies are required to determine its effects on self-care behaviors and clinical outcomes.
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Yaghoubi et al. (2026) studied Coronary artery bypass grafting (CABG) (n=35). Smartphone-based self-care application was evaluated on Usability and user satisfaction measured by the Questionnaire for User Interaction Satisfaction (QUIS, 0-9 scale). A smartphone-based self-care application for CABG patients achieved a mean QUIS usability score of 7.9±1.032 out of 9, with 91.4% of users rating usability as good.
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