From the Nell Hodgson Woodruff School of Nursing, Emory University, Atlanta, GA.
- Objective: To review some of the proposed pathways that increase frailty risk in older persons with heart failure and to discuss tools that may be used to assess for changes in physical and cognitive functioning in this population in order to assist with appropriate and timely intervention.
- Methods: Review of the literature.
- Results: Heart failure is the only cardiovascular disease that is increasing by epidemic proportions, largely due to an aging society and therapeutic advances in disease management. Because heart failure is largely a cardiogeriatric syndrome, age-related syndromes such as frailty and cognitive impairment are common in heart failure patients. Compared with age-matched counterparts, older adults with heart failure 4 to 6 times more likely to be frail or cognitively impaired. The reason for the high prevalence of frailty and cognitive impairment in this population is not well known but may likely reflect the synergistic effects of heart failure and aging, which may heighten vulnerability to stressors and accelerate loss of physiologic reserve. Despite the high prevalence of frailty and cognitive impairment in the heart failure population, these conditions are not routinely screened for in clinical practice settings and guidelines on optimal assessment strategies are lacking.
- Conclusion: Persons with heart failure are at an increased risk for frailty, which may worsen symptoms, impair self-management, and lead to worse heart failure outcomes. Early detection of frailty and cognitive impairment may be an opportunity for intervention and a key strategy for improving clinical outcomes in older adults with heart failure.
Approximately 5.7 million persons in the United States are diagnosed with heart failure, and the number of reported new cases is expected to increase to over 700,000 cases annually by the year 2040 . This rising incidence is fueled by an aging population; by the year 2030, 1 in 5 Americans will be over 65 years of age . Heart failure is prevalent among those 65 years of age and older and is the most common reason for hospitalization in this age-group. High readmission rates, approaching 50% over 6 months, are a major contributor to the the escalating economic burden associated with heart failure .
Persons with heart failure are more likely to be frail and experience cognitive impairment than their age-matched counterparts without heart failure. The reasons for this are not well known but may be related to hemodynamic, vascular, and inflammatory changes occurring as heart failure progresses. In this paper, we review the link between frailty and cognitive impairment in heart failure, instruments that may be useful for early detection, and interventions such as exercise that may be beneficial for attenuating both conditions.
Frailty in Heart Failure
Frailty is a heightened vulnerability to stressors in the presence of low physiological reserve . When exposed to stressors, persons who are frail have a much higher probability for disproportionate decompensation, negative events, functional decline, disability, and mortality . Among persons with heart failure, frailty may predispose them to decompensate at a lower threshold, requiring more frequent hospitalizations. Persons with heart failure are more likely to be frail than their age-matched counterparts without heart failure [6,7].