Why the study?
Cardiac rehabilitation improves outcomes after PCI, but participation remains suboptimal due to barriers such as distance, cost, and lack of referral, prompting the evaluation of mobile health interventions to enhance accessibility and engagement.
Does a personalized smartphone messaging app (AnSim) improve blood pressure in patients who recently underwent percutaneous coronary intervention?
Population
120 patients who had undergone PCI within the prior month at 2 Korean hospitals
Comparison
AnSim smartphone messaging app plus usual care vs usual care alone
Design
2-arm randomized controlled trial
Follow-up
9 months
Authors
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Low-intensity messaging app did not reduce BP post-PCI; does not support implementation and challenges efficacy assumptions for future digital intervention trials.
Does a personalized smartphone messaging app (AnSim) improve blood pressure in patients who recently underwent percutaneous coronary intervention?
A low-intensity personalized smartphone messaging app did not significantly improve blood pressure compared to an attention-matched diary app in patients post-PCI, though exploratory analyses suggest higher engagement correlates with better risk factor control.
Lee et al. (2026) studied this question.
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