<![CDATA[Background: Heart failure is a chronic condition that may cause activity limitations, fatigue, dyspnea, anxiety, and reduced quality of life. Disease management requires medication adherence, symptom monitoring, activity regulation, and the ability to perform self-care. Self-care education is a nursing intervention that may help patients understand and manage their health conditions. Objective: To analyze the effect of self-care education on the quality of life of patients with heart failure. Methods: This study used a quantitative quasi-experimental one-group pretest-posttest design. The working research framework involved 64 patients with heart failure receiving hospital care in September 2026. Education was delivered in three sessions covering disease understanding, medication adherence, symptom monitoring, activity and rest management, dietary recommendations, and warning signs of worsening conditions. Quality of life was assessed using the Kansas City Cardiomyopathy Questionnaire (KCCQ). Paired statistical analysis was used. Results: Based on the working dataset, the mean quality-of-life score increased from 48.6 before education to 65.2 after education, representing a mean improvement of 16.6 points. Statistical analysis indicated a difference between pre- and post-education scores (p<0.001). Conclusion: Self-care education may improve the quality of life of patients with heart failure by strengthening their ability to manage symptoms, follow treatment recommendations, and perform daily self-care activities. Education should be continuous and tailored to individual patient needs]]>
