Đánh giá mức độ mệt trên 264 bệnh nhân suy tim mạn tính điều trị tại khoa Tim mạch, bệnh viện Đa khoa tỉnh Nam Định. Kết quả cho thấy trong tổng số 264 bệnh nhân, có 169 người chiếm tỷ lệ 64% cảm thấy mệt mỏi và còn lại 36% không cảm thấy mệt.Introduction: Fatigue is a common symptom of patient with heart failure. Identifing level of fatigue to improve the quality of life of heart failure patients. Objectives: To determine the level of fatigue of patients with chronic heart failure at cardiology department of Nam Dinh General Hospital. Methodology: Descriptive research, data was collected by using questionnaire to direct interview. Results: data from 264 subjects showed that 169 subjects equal 64% werefatigue and 36% were not fatigue. Conclusions and Recommendations: More attention should be paid to level of fatigue and fatigue-related factors in patients with chronic heart failure, thus toassess the patient's status for adjusting timelyof caring and treatment to enhancing the quality of life of heart failure patients.