THE IMPACT OF THE SMARTPHONE EDUCATIONAL APPLICATION INTERVENTION ON THE QUALITY OF LIFE OF PATIENTS WITH CORONARY ARTERY DISEASE

The prevalence of coronary artery disease (CAD) is high among adults globally, and it also affects the 
quality of life of patients in Indonesia. In recent years, there has been significant progress in smartphone 
application technology, which has demonstrated positive outcomes in chronic disease prevention and 
health promotion. Therefore, the aim of this research was to create an educational intervention model 
that utilizes a smartphone application to enhance the quality of life of CAD patients and investigate its 
effectiveness. A panel of experts, comprising two cardiologists and an IT programmer, reviewed and 
validated the content of the smartphone educational application model which was developed as the 
primary component of the program. A quasi-experimental design, consisting of pre- and post-tests for 
both intervention and control groups, was employed in this study. It was conducted at M. Djamil Hospital 
in Indonesia from September 2020 to September 2022, with 250 patients with coronary artery disease 
selected through convenience sampling and meeting the inclusion criteria (intervention group: 125 
patients; control group: 125 patients). Before receiving standard discharge planning from the hospital, 
both groups underwent a pre-test as a baseline measurement. However, only the intervention group 
received daily updates on their smartphones via the app for four weeks, while both groups underwent 
a post-test. The participants' CAD knowledge and quality of life were assessed using the CADEQ 
Questionnaire-2 and QOL questionnaire at baseline. After implementing the nursing intervention 
through the smartphone educational application model, a significant improvement was observed in the 
knowledge of Coronary Artery Disease (CAD) Patients between the pre- and post-tests with a p-value 
of 0.000. Additionally, there was a significant improvement in the overall QOL of Coronary Artery 
Disease patients between the pre- and post-tests with a p-value of (p=0.000).