Background

Considerable evidence confirms the high prevalence of anxiety and depression in the patients with heart failure (HF). However, little is known about the relationship of race/ethnicity to psychosocial variables in this population. The purpose of this study was to examine and compare the incidence of anxiety and depression in a cohort of non-Hispanic blacks, Hispanics, and non-Hispanic whites with advanced systolic HF.

Methods and results

Two-hundred forty-one patients (7% non-Hispanic blacks, 22.8% Hispanics, 60.7% non-Hispanic whites) mean age 56.7+/-13.0 years, male (70%), married (81%), retired (75%), New York Heart Association (NYHA) Class III (53.9%), and mean ejection fraction 31.2+/-5.4%) from a single heart transplant facility were asked to complete a series of questionnaires to assess anxiety, depression, perceived control, social support, and financial stability. Non-Hispanic blacks had higher levels of anxiety (P=.048) and depression (P=.026) compared with Hispanics; a similar trend was noted when comparing non-Hispanic blacks and non-Hispanic whites, but these differences were not statistically significant. Perceived control was highest among Hispanics and lowest among non-Hispanic whites (P=.046). In a multivariate model race/ethnicity, perceived control, and social support accounted for 30% of the variance in anxiety while race/ethnicity, NYHA Class, perceived control, and social support accounted for 41% of the variance in depression.

Conclusions

Our findings reveal that non-Hispanic blacks are more likely to be anxious and depressed than their counterparts. Because patient perceptions of control and social support are related to dysphorias known to influence morbidity and mortality, clinicians should regularly assess patients' concerns and assist in accessing appropriate services and treatments tailored to individual needs. Non-Hispanic blacks warrant increased scrutiny.

Objectives

Researchers have proposed biological (inflammation) and psychological (depression) factors as potential mechanisms for poorer outcomes and readmissions in heart failure (HF) patients. However, studies investigating the link between inflammation and depressive symptoms in these patients are few. We examined the relationships between levels of the inflammatory markers C-reactive protein (CRP), interleukin (IL)-6, and soluble tumor necrosis factor receptor 2 (sTNR2) and depressive symptoms in HF outpatients.

Method

55 patients (74.5% men; 60% Whites; mean age 71.6 ± 11.3 years) with New York Heart Association Class II, III, or IV HF (49%, 47%, and 4%, respectively) and mean ejection fraction (EF) 29.9 ± 7.1% completed the Patient Health Questionnaire (PHQ)-9 as a measure of depressive symptoms. We also obtained height, weight, and CRP, IL-6, and sTNFR2 levels. We used multivariate regressions to assess the predictive value of PHQ-9 scores on each inflammatory marker.

Results

22 (40%) participants reported depressive symptoms (PHQ-9 score ≥ 5). After controlling for age, gender, body mass index, HF etiology, EF, and statin use, we found significant relationships between levels of both sTNFR2 (β = .35, p = .01) and IL-6 (β = .30, p = .04), but not CRP (β = -.96, p = .52), and depression scores.

Conclusion

Our findings add to a growing body of evidence supporting the proposition that heightened inflammation explains the effect depression has on HF. Health care providers should screen for depression in HF patients, as they may be at higher risk of augmented inflammation and poor outcomes.