The Relation between beliefs about medicines and treatment adherence among patient with Coronary artry disease

Objective: Adherence to drug treatment in patients with coronary artery disease is very important because of the need for long-term use of drugs and the consequences of non-adherence. Several factors may play a role in drug adherence. In this study, the effect of drug therapy-related beliefs on adherence to drug therapy in patients with coronary artery disease was investigated. Material and Methods: In this croos- sectional  study by stratified and cluster sampling using 256 patients with coronary artery disease admitted to teaching hospitals and patients with coronary artery disease referred to specialized clinics The heart of Hamedan Heart Hospital was selected in 2021. Patients' adherence to drug therapy with Morriski-8 questionnaire and their belief therapy with BMQ belief therapy questionnaire were evaluated and evaluated for the effect of belief therapy on adherence to drug therapy. Results: The medication adherence rates of good, moderate, and poor were 35.2%, 31.6%, and 28.1%, respectively. In patients with poor, moderate and good adherence to drug treatment, respectively, the mean score of belief in the need for drug treatment was 19.3±2.34, 19.3±2.25, and 18.3±10.7 (P=0.005). Worry about drug treatment 17.3±2.84, 16.3±2.58 and 15.2±77.32 (P=0.001), belief in drug prescription 14.2±26.7, 2.16±2. 13.13 and 11.2±83.6 (P = 0.001), belief in treatment harms 13.3±10.5, 10.67 and 9.2±57.7 (P = 0.001) and score Overall belief in drug treatment was 64.8±47.9, 59.9±18.67 and 55.7±28.45 (P=0.001). Conclusion:  More than half of the patients have appropriate drug treatment, however, the belief of the harm of drug treatment and the fear of drug side effects, coronary artery disease drugs are related to the reduction of drug treatment compliance