The positive impact of pharmacist interventions using educational video technology on patient knowledge of and satisfaction with warfarin therapy

Abstract

To assess the positive impact of pharmacist interventions via an educational video on patients’ knowledge of and satisfaction with warfarin therapy. This study used a prospective pre-test/post-test design that enrolled 91 patients from an anticoagulant clinic at King Khaled University Hospital in Riyadh, Saudi Arabia. All patients completed the Anticoagulation Knowledge Assessment (AKA) and Anti-Clot Treatment Satisfaction (ACTS) scales. Afterwards, the patients watched a 10-minute educational video containing basic information about warfarin and were given relevant informative booklets. The patients were reassessed after a mean follow-up period of approximately 52 days. In total, 85 patients completed the study. The impact of the intervention on patient knowledge was highly significant (mean difference=17.7%, 95% CI = 21.75-13.58, P<0.000). Additionally, the patients had significant increases in their ACTS benefits subscale scores (mean difference=0.73, 95% CI = 1.22-0.24, P=0.004). However, there was no significant effect on the patients’ perceptions of the burden of warfarin. This study demonstrated that a pharmacist-led audiovisual intervention via an educational video coupled with an informational booklet effectively improved patients’ retained knowledge of and satisfaction with the benefits of warfarin therapy.