Abstract 14553: Greater Than 3g of a Dietary Sodium Intake Independently Predicts Worsening Health-Related Quality of Life in Heart Failure Patients With No Cardiac Events Over 1-Year Follow-Up
Background. A major desirable outcome in heart failure (HF) management is to improve health-related quality of life (HRQoL). The recommendation for dietary sodium restriction is a standard component of HF management. However, there is little direct evidence of the impact of dietary sodium intake on HRQoL among HF patients.
Purpose. To determine whether greater than 3g of daily sodium intake would be independently associated with higher risk for worsening HRQoL in HF patients with no cardiac events over 1-year follow-up.
Methods. A total of 259 patients with HF (35% female, 61±12 years, 46% New York Heart Association [NYHA] III/IV) completed a 4-day food diary. Nutritional Data System software was used to analyze food diaries and determine dietary sodium intake. Patients were divided into groups based on sodium intake using the cut-point of 3g average daily sodium intake. The Minnesota Living with HF Questionnaire (LHFQ) was used to assess HRQoL at baseline and one year later. Patients were followed to determine cardiac events (i.e., cardiac-related hospitalization or emergency department [ED] visit) for 1-year through patient interview and medical record review. Hierarchical logistic regression was used to determine the relationship between daily sodium intake and change in HRQoL (improved vs. worsened HRQoL).
Results. Fifty-four patients had cardiac events during the 1-year follow up and were excluded from the analysis. Ninety-four (46%) of the remaining 205 patients had a dietary sodium intake > 3g/day. Daily sodium intake > 3g was associated with almost double the risk for having worse HRQoL at one year after controlling for age, gender, etiology, body mass index, NYHA class, ejection fraction, total comorbidity score, and prescribed medications (see Table).
Conclusion. This finding provides additional evidence that sodium intake < 3g/day is associated with better outcomes for stable HF patients who are free from cardiac events.
- © 2011 by American Heart Association, Inc.