Efficacy of a WeChat-based intervention for adherence to secondary prevention therapies in patients undergoing coronary artery bypass graft in China: A randomized controlled trial.

Introduction: We assessed whether the social media-based (WeChat) intervention integrated with follow-up care could improve adherence to drugs, lifestyle changes and clinical risk markers in patients undergoing coronary artery bypass graft (CABG) in China.

Methods: We randomized patients at hospital discharge following CABG to intervention group or control care in China. The intervention is a structured programme of cardiac health education, medication reminders and cardiologist-based follow-up service using WeChat platform. The control group maintains a routine practice pattern. The primary outcome is adherence to cardioprotective medications measured for 12 months after discharge. We also evaluated the lifestyle modifications and clinical risk markers at 12 months.

Results: A total of 164 participants completed the trial for analysis. The intervention group had significantly greater adherence to statins use 98.6% . 75.0% ( < 0.01), beta-blockers 93.4% . 69.3% ( < 0.01) and aspirin 98.8% . 87.8% ( < 0.001). The intervention group had significantly greater adherence to regular physical activity (64.2% . 48.2%;  < 0.039). Furthermore, intervention versus standard group at 12 months had significantly lower mean systolic blood pressure and low-density lipoprotein cholesterol ( < 0.05).

Discussion: A WeChat-based intervention strategy in post-CABG patients improved adherence to medications, including statin, aspirin and beta-blockers, and regular physical activity and resulted in an improvement in systolic blood pressure and low-density lipoprotein cholesterol level.