Background: The prevalence of heart failure is increasing in Lebanon but to date there is no systematic evaluation of a disease management intervention. Objective: The aim of this study was to evaluate the effect of involving family caregivers in the self-care of patients with heart failure on the risk of hospital readmission. Design: A multi-site, block randomised controlled trial. Settings The study was conducted over a 13-month period in three tertiary medical centres in Beirut and Mount Lebanon, Lebanon.