Mohd Said, Mohd Ridzuan and Abd Razak, Nur Ayunni and Hoh, Wei Siang and Shaharum, Syamimi Mardiah and Abd Ghani, Normaniha
(2025)
Preliminary finding of ORCUS: a home-based cardiac rehabilitation application for stable ischaemic heart disease.
Open Heart, 12 (Supp 1).
A16-A16.
ISSN 2398-595X
E-ISSN 2053-3624
Abstract
Cardiac rehabilitation is a structured program provided to patients with major cardiovascular diseases, shown to enhance functional capacity, reduce morbidity and mortality rate worldwide. However, in Malaysia, the availability of such programs is limited due to disparities in healthcare access. This led to our objective of testing a newly developed AI-based home health monitoring cardiac rehabilitation application (ORCUS) designed to improve patients’ functional status.
This was a prospective study conducted on patients with stable ischaemic heart disease patients at Sultan Ahmad Shah Medical Centre @ IIUM. The inclusion criteria were patients over 18 years old, owner of an Android smartphone, and literate in using applications. Patients were excluded if they were dependent on activities of daily living (ADLs) or unable to adhere to a daily exercise regime. After obtaining consent, baseline demographic details were collected, and patients were instructed on the exercise regime through the ORCUS application. Subsequently, patients underwent functional assessments, including an exercise stress test and 6-minute walking test, which repeated at 8 weeks after completing 56 activities with ORCUS.
A total of 10 patients were analyzed with 90% of them were male (n = 9), median age of 51 years (IQR 47 – 63) and most of them were unstable angina, 60% (n = 6), with STEMI of 30% (n = 3), managed with revascularization, 60% (n = 6). For the functional assessments, an increase average SpO2 during 6-minute walking test (6MWT) was recorded after completing the activities in ORCUS, with a median of 96.5% (IQR 96 – 97) compared to a median 98% (IQR 97 – 98), p < 0.05, together with increment of baseline SpO2 with a median of 97% (IQR 96.2 – 98) compared to a median 99% (IQR 97 – 99), p = 0.01. In term of exercise stress test (EST), an increase in total time during stress test was recorded with a median of 10 mins (IQR 7.5 – 11.1) compared to a median of 10.2 mins (IQR 9.3 – 13.2), p = 0.04 and reduction of baseline heart rate prior EST with a median of 75 bpm (IQR 65 – 82) compared to a median of 67 bpm (IQR 60 – 72), p = 0.04.
As conclusion, the home-based cardiac rehabilitation application has shown effectiveness in enhancing patients’ functional status especially with 6MWT and EST. However, as the study is still ongoing, additional data is needed to fully evaluate the feasibility of ORCUS for patients with stable ischaemic heart disease.
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