Knowledge, Adherence to Lifestyle Recommendations, and Quality of Life Among Koreans With Heart Failure.

The mean age of participants was 64.1 ± 7.4 years. A higher proportion of participants were male, married, unemployed, had a high education level, and class I New York Heart Association (NYHA) functional status. A higher proportion of participants had ≥2 comorbidities and the most prevalent comorbidity was diabetes. The mean score of HF knowledge was 6.9 (possible range 0-15) and the most frequent incorrect items were "proper actions to reduce thirst" and "causes of leg swelling" in both better and worse QOL groups. Among the recommended lifestyle, pneumococcal vaccination had the least adherence in both groups. Multiple logistic regression showed that patients in NYHA class I, with a higher left ventricular ejection fraction, who had knowledge of "amount of fluid intake a day" and consumed more than moderate alcohol tended to have better QOL. Conclusion: More active interventions targeting HF knowledge in proper actions to reduce thirst, causes of leg swelling, and the amount of fluid intake per day are required. Patients with HF in more serious condition need special attention regarding the risk of worse QOL. The role of alcohol consumption in QOL among HF patients in Korea needs further exploration.