BACKGROUND: Caregiver contributions (CC) to heart failure (HF) self-care maintenance (ie, CC to maintaining HF stability) and management (ie, CC to dealing with HF signs and symptoms) improve patient outcomes, but it is unknown whether caregiver preparedness influences CC to self-care and whether caregiver confidence mediates this process. OBJECTIVES: We evaluated the influence of caregiver preparedness on CC to HF self-care maintenance and management and the mediating role of caregiver confidence. METHODS: This is a secondary analysis of the MOTIVATE-HF study.