Key result
Depression in HF linked to ~110% higher risk of death and secondary events.
- RR 2.1
- 95% CI 1.7 to 2.6
Why the study?
The prevalence of depression in heart failure patients, its impact on clinical outcomes, and the effectiveness of treatments to reduce depression were not well characterized.
Does depression increase the risk of adverse clinical outcomes in patients with heart failure?
Key Points
- To assess the prevalence of depression, its association with adverse clinical outcomes, and the evidence for antidepressant treatment efficacy among patients with heart failure.
- Conducted systematic literature searches across Medline and PsycInfo databases along with secondary reference lists.
- Identified and synthesized data from 36 eligible publications assessing depression prevalence, clinical endpoints, and interventions in heart failure.
- Clinically significant depression affected 21.5% of heart failure patients, differing by screening questionnaires (33.6%) versus diagnostic interviews (19.3%), and escalating with disease severity from New York Heart Association class I (11%) to class IV (42%).
- Depression was associated with significantly increased rates of death and secondary events (risk ratio = 2.1, 95% CI 1.7 to 2.6), alongside higher healthcare utilization, hospitalizations, and emergency department visits.
- Treatment studies generally relied on small cohorts but indicated reductions in depressive symptoms across various therapeutic interventions.
Study Design
Type
Meta-Analysis
Structured PICO
Does depression increase the risk of adverse clinical outcomes in patients with heart failure?
P
Population
Meta-analysis of 36 publications assessing the prevalence of depression in heart failure patients and its association with clinical outcomes.
E
Exposure
Presence of clinically significant depression
C
Comparator
Absence of depression
O
Outcome
Death and secondary eventshard clinical
Main Result
Relative Risk: 2.1 (95% CI 1.7–2.6)
Limitations
- Treatment studies generally relied on small samples
Key expert perspectives
Captured external expert commentary on this paper, strongest first. Original sources are linked where available.
“As expected, high levels of BNP predicted worse outcomes in our study, but even taken this and other disease makers into account, we found that depressive symptoms were still independently associated with worse outcomes. Our findings underscore the importance of assessing heart failure patients for depression, so that where treatment is indicated, both the quality and quantity of their lives may be improved.”
“Although practitioners may continue to be tempted to use SSRIs, it is important to acknowledge that we're principally treating ourselves; the patient isn't likely to benefit.”
CCChristopher CelanoPsychiatrist, Massachusetts General Hospital
“Diagnosing depression or anxiety disorders in patients with heart failure can be challenging, given the overlap in symptoms between these psychiatric and cardiac illnesses. Diagnosis is important, as there are safe and effective treatments—especially for depression—for patients with these illnesses.”
Implication
Clinically significant depression affects over 1 in 5 heart failure patients and is strongly associated with a twofold increased risk of mortality and secondary adverse events.
Abstract
This article describes a meta-analysis of published associations between depression and heart failure (HF) in regard to 3 questions: 1) What is the prevalence of depression among patients with HF? 2) What is the magnitude of the relationship between depression and clinical outcomes in the HF population? 3) What is the evidence for treatment effectiveness in reducing depression in HF patients? Key word searches of the Medline and PsycInfo databases, as well as reference searches in published HF and depression articles, identified 36 publications meeting our criteria. Clinically significant depression was present in 21.5% of HF patients, and varied by the use of questionnaires versus diagnostic interview (33.6% and 19.3%, respectively) and New York Heart Association-defined HF severity (11% in class I vs. 42% in class IV), among other factors. Combined results suggested higher rates of death and secondary events (risk ratio = 2.1, 95% confidence interval 1.7 to 2.6), trends toward increased health care use, and higher rates of hospitalization and emergency room visits among depressed patients. Treatment studies generally relied on small samples, but also suggested depression symptom reductions from a variety of interventions. In sum, clinically significant depression is present in at least 1 in 5 patients with HF; however, depression rates can be much higher among patients screened with questionnaires or with more advanced HF. The relationship between depression and poorer HF outcomes is consistent and strong across multiple end points. These findings reinforce the importance of psychosocial research in HF populations and identify a number of areas for future study.
Discussion
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Cite This Study
Rutledge et al. (2006) conducted a meta-analysis in Heart failure. Depression vs. No depression was evaluated on Death and secondary events (RR 2.1, 95% CI 1.7 to 2.6). Depression in heart failure patients was associated with a significantly higher risk of death and secondary events (RR 2.1; 95% CI 1.7 to 2.6).