Background: QR (quick response) codes are a promising tool for health education, however effects of QR code application in providing peri-procedure education to patients with coronary angiography is unclear.Aim/Objective: This study investigated the effect of a QR code-based video education program on anxiety, adherence, and satisfaction in Chinese coronary angiography patients.Material and Methods: This prospective controlled clinical trial included 335 patients undergoing coronary angiography, including 166 patients in the experimental group and 169 patients in the control group. On the day before coronary angiography, patients in the experimental group had access to and could watch an educational video on their smartphones by scanning a QR code for multiple times, while patients in the control group watched the same video on a tablet once only. The primary outcome was anxiety assessed using the Chinese State Anxiety Inventory (C-SAI). Adherence to instructions and patient satisfaction with the information delivery method were also evaluated.Results: The C-SAI scores improved in the experimental group compared to the control group (F = 9.8, P < 0.001) over time. There is a significant difference in the changes of anxiety scores from baseline to pre-procedure (P < 0.001) and post-procedure (P < 0.01) between the two groups. Individuals in the experimental group showed better adherence to instructions on removing dentures and jewelry, and taking medicines before the procedure (P < 0.05), and limb activity, water consumption, and diet after the procedure (P < 0.001).Conclusion: Patient education programs on smartphone that can be accessed multiple times by scanning a QR code can be an effective and convenient approach to reducing anxiety and enhancing adherence to instructions among Chinese coronary angiography patients. Hospitals and clinicians should consider more investments in developing such patient education programs and also help improve ehealth literacy.
Keywords: QR code; anxiety; coronary angiography; health education; patient satisfaction; smartphone; video.