Psychological Determinants of Heart Failure Self-Care: Systematic Review and Meta-Analysis

Enhancing self-care adherence in patients with heart failure: a study protocol for developing a theory-based behaviour change intervention using the COM-B behaviour model (ACHIEVE study)

INTRODUCTION

Although international guidelines recommend self-care as an integral part of routine heart failure management, and despite evidence supporting the positive outcomes related to self-care, patients are frequently unable to adhere. Self-care can be modified through behaviour change interventions (BCIs). However, previous self-care interventions have shown limited success in improving adherence to self-care, because they were neither theory-based nor well defined, which precludes the identification of underlying causal mechanisms as well as reproducibility of the intervention. Thus, our aim is to develop an intervention manual that contains theory-based BCIs that are well-defined using eight descriptors proposed to describe BCIs in a standardised way.

METHODS AND ANALYSIS

BCIs will be based on statements of findings derived through qualitative meta-summary techniques and a quantitative meta-analysis. These reviews will be used to extract factors (target behaviours) associated with self-care adherence/non-adherence. Extracted target behaviours will be mapped onto the 'Capability, Opportunity, Motivation and Behaviour' (COM-B) model to capture the underlying mechanisms involved. To develop approaches for change, the 'Taxonomy of Behaviour Change Techniques' will be used to allow effective mapping of the target behaviours onto established behaviour change techniques. Suggested BCIs will then be translated into locally relevant interventions using the Normalisation Process Theory to overcome the difficulties of implementing theoretically derived interventions into practice. Finally, a consensus development method will be employed to fine-tune the content and acceptability of the intervention manual to increase the likelihood of successfully piloting and implementing future BCIs into the German healthcare system.

ETHICS AND DISSEMINATION

This study has been reviewed and approved by the Ethics Committee of the Medical Faculty of the Heinrich Heine University Düsseldorf, Germany (Ref #: 2018-30). The results will be disseminated via peer-reviewed journal publications, conference presentations and stakeholder engagement activities.

TRIAL REGISTRATION NUMBER

DRKS00014855; Pre-results.

Patient Experiences of Web-Based Cognitive Behavioral Therapy for Heart Failure and Depression: Qualitative Study

Background

Web-based cognitive behavioral therapy (wCBT) has been proposed as a possible treatment for patients with heart failure and depressive symptoms. Depressive symptoms are common in patients with heart failure and such symptoms are known to significantly worsen their health. Although there are promising results on the effect of wCBT, there is a knowledge gap regarding how persons with chronic heart failure and depressive symptoms experience wCBT.

Objective

The aim of this study was to explore and describe the experiences of participating and receiving health care through a wCBT intervention among persons with heart failure and depressive symptoms.

Methods

In this qualitative, inductive, exploratory, and descriptive study, participants with experiences of a wCBT program were interviewed. The participants were included through purposeful sampling among participants previously included in a quantitative study on wCBT. Overall, 13 participants consented to take part in this study and were interviewed via telephone using an interview guide. Verbatim transcripts from the interviews were qualitatively analyzed following the recommendations discussed by Patton in Qualitative Research & Evaluation Methods: Integrating Theory and Practice. After coding each interview, codes were formed into categories.

Results

Overall, six categories were identified during the analysis process. They were as follows: “Something other than usual health care,” “Relevance and recognition,” “Flexible, understandable, and safe,” “Technical problems,” “Improvements by real-time contact,” and “Managing my life better.” One central and common pattern in the findings was that participants experienced the wCBT program as something they did themselves and many participants described the program as a form of self-care.

Conclusions

Persons with heart failure and depressive symptoms described wCBT as challenging. This was due to participants balancing the urge for real-time contact with perceived anonymity and not postponing the work with the program. wCBT appears to be a valuable tool for managing depressive symptoms.

Effect of family nursing therapeutic conversations on health-related quality of life, self-care and depression among outpatients with heart failure: A randomized multi-centre trial

OBJECTIVE

To evaluate the short-term (3 months) effects of family nursing therapeutic conversations (FNTC) on health-related quality of life, self-care and depression in outpatients with Heart failure (HF).

METHODS

A randomised multi-centre trial was conducted in three Danish HF clinics. The control group (n = 167) received usual care, and the intervention group (n = 180) received FNTCs as supplement to usual care. Primary outcome was clinically significant changes (6 points) in Kansas City Cardiomyopathy Questionnaire (KCCQ) summary score between groups. Secondary outcomes were changes in self-care behaviour and depression scores. Data were assessed before first consultation and repeated after three months.

RESULTS

No statistically significant difference was found in the change of KCCQ, self-care and depression scores between the groups. KCCQ scores of patients in the FNTC group changed clinically significant in seven domains, compared to one domain in the control group, with the highest improvement in self-efficacy, social limitation and symptom burden.

CONCLUSION

FNTC was not superior to standard care of patients with HF regarding health-related quality of life, self-care and depression.

IMPLICATION FOR PRACTICE

Addressing the impact of the disease on the family, might improve self-efficacy, social limitation and symptom burden in patients with heart failure.

Patient-reported causes of heart failure in a large European sample

BACKGROUND

Patients diagnosed with chronic diseases develop perceptions about their disease and its causes, which may influence health behavior and emotional well-being. This is the first study to examine patient-reported causes and their correlates in patients with heart failure.

METHODS

European heart failure patients (N = 595) completed questionnaires, including the Brief Illness Perceptions Questionnaire. Using deductive thematic analysis, patient-reported causes were categorized into physical, natural, behavioral, psychosocial, supernatural and other. Clinical data were collected from medical records.

RESULTS

Patients who did not report any cause (11%) were on average lower educated and participated less often in cardiac rehabilitation. The majority of the remaining patients reported physical causes (46%, mainly comorbidities), followed by behavioral (38%, mainly smoking), psychosocial (35%, mainly (work-related) stress), and natural causes (32%, mainly heredity). There were socio-demographic, clinical and psychological group differences between the various categories, and large discrepancies between prevalence of physical risk factors according to medical records and patient-reported causes; e.g. 58% had hypertension, while only 5% reported this as a cause. Multivariable analyses indicated trends towards associations between physical causes and poor health status (Odds ratio (OR) = 1.41, 95% confidence interval (95% CI) = 0.95-2.09, p = 0.09), psychosocial causes and psychological distress (OR = 1.54, 95% CI = 0.94-2.51, p = 0.09), and behavioral causes and a less threatening view of heart failure (OR = 0.64, 95% CI = 0.40-1.01, p = 0.06).

CONCLUSION

European patients most frequently reported comorbidities, smoking, stress, and heredity as heart failure causes, but their causal understanding may be limited. There were trends towards associations between patient-reported causes and health status, psychological distress, and illness perceptions.

Psychosocial perspectives in cardiovascular disease

Adaptation to living with cardiovascular disease may differ from patient to patient and is influenced not only by disease severity and limitations incurred by the disease but also by socioeconomic factors (e.g. health literacy), the patients' psychological make-up and susceptibility to distress. Co-morbid depression and/or anxiety is prevalent in 20% of patients with cardiovascular disease, which may be either transient or chronic. Distress, such as depression, reduces adherence, serves as a barrier to behaviour change and the adoption of a healthy lifestyle, and increases the risk that patients drop out of cardiac rehabilitation, impacting on patients' quality of life, risk of hospitalisation and mortality. Hence it is paramount to identify this subset of high-risk patients in clinical practice. This review provides a general overview of the prevalence of selected psychosocial risk factors, their impact on patient-reported and clinical outcomes, and biological and behavioural mechanisms that may explain the association between psychosocial factors and health outcomes. The review also provides recommendations on which self-report screening measures to use to identify patients at high risk due to their psychosocial profile, and the effectiveness of available trials that target these risk factors. Despite challenges and barriers associated with screening of patients combined with appropriate treatment, it is paramount that we treat not only the heart but also the mind in order to improve the quality of care and patient and clinical outcomes.

The dynamics of self-care in the course of heart failure management: data from the IN TOUCH study

INTRODUCTION

Self-care is an important patient-reported outcome (PRO) for heart failure (HF) patients, which might be affected by disease management and/or telemonitoring (TM). The number of studies reporting the influence of TM on self-care is limited.

AIMS

This study aimed: to assess whether TM, in addition to information-and-communication-technology (ICT)-guided disease management system (ICT-guided DMS), affects self-care behavior; to evaluate the dynamics of self-care during the study; to investigate factors contributing to self-care changes; and to identify a patient profile that predisposes the patient to improvement in self-care.

METHODS

In the INnovative ICT-guided-DMS combined with Telemonitoring in OUtpatient clinics for Chronic HF patients (IN TOUCH) study, 177 patients were randomized to either ICT-guided DMS or TM+ICT-guided DMS, with a follow-up of 9 months. The current analysis included 118 participants (mean age: 69±11.5 years; 70% male) who filled the following PRO instruments: the nine-item European Heart Failure Self-care Behaviour scale (EHFScBs), Hospital Anxiety and Depression scale (HADs), and Minnesota Living with HF Questionnaire (MLHFQ).

RESULTS

The baseline level of self-care was better in the TM+ICT-guided-DMS group (n=58) compared to ICT-guided-DMS group (n=60, p=0.023). Self-care behavior improved in the ICT-guided-DMS group (p<0.01) but not in the TM+ICT-guided-DMS group. Factors associated with self-care worsening were as follows: higher physical subscale of MLHFQ (per 10 points, p<0.05), lower left ventricular ejection fraction (LVEF) (per 5%, p<0.05), lower New York Heart Association (NYHA) class (class III vs class II, p<0.05). The subgroups of patients who had an initial EHFScBs total score >28, or from 17 to 28 with concomitant HADs depression subscale (HADs_D) score ≤8, demonstrated the greatest potential to improve self-care during the study.

CONCLUSION

TM did not have an advantage on self-care improvement. Poor physical aspect of quality of life, lower LVEF, and lower NYHA class were associated with self-care worsening. The greatest self-care improvement may be achieved in those patients who have low or medium initial self-care level in the absence of depression.

Depression and alcohol use disorder at antiretroviral therapy initiation led to disengagement from care in South Africa

We sought to assess mental health at the time of antiretroviral therapy (ART) initiation and subsequent retention in care over a six-month follow-up period. A total of 136 people living with HIV in South Africa were administered surveys measuring demographic information and mental health indicators at the time of ART initiation. Follow-up was completed via chart abstraction to assess for six-month outcomes of retention in care and viral suppression. At enrollment, 45/136 (33%), 67/136 (49%), and 45/136 (33%) participants screened positive for depression, anxiety, and alcohol use disorder, respectively. After six months of follow-up, 96/136 (71%) participants remained in care; 35/87 (40.2%) participants who remained in care had a level <50 copies/mL. Those with depression (49% vs. 77% retained; p < 0.01) and those with alcohol use disorder (52% vs. 76% retained; p < 0.01) were less likely to be retained in care. In multivariable logistic regression, depression OR 3.46 (95% CI: 1.33, 7.97; p < 0.01) and alcohol abuse OR 3.89 (95% CI: 1.70, 8.97; p < 0.01) were independently associated with loss from care. These results emphasize the importance of mental health on early ART outcomes and the HIV care continuum.

Factors Related to Self-Care in Heart Failure Patients According to the Middle-Range Theory of Self-Care of Chronic Illness: a Literature Update

Purpose of the Review

As described in the theory of self-care in chronic illness, there is a wide range of factors that can influence self-care behavior. The purpose of this paper is to summarize the recent heart failure literature on these related factors in order to provide an overview on which factors might be suitable to be considered to make self-care interventions more successful.

Recent Findings

Recent studies in heart failure patients confirm that factors described in the theory of self-care of chronic illness are relevant for heart failure patients.

Summary

Experiences and skills, motivation, habits, cultural beliefs and values, functional and cognitive abilities, confidence, and support and access to care are all important to consider when developing or improving interventions for patients with heart failure and their families. Additional personal and contextual factors that might influence self-care need to be explored and included in future studies and theory development efforts.

Symptom Diary Use and Improved Survival for Patients With Heart Failure

BACKGROUND

Attention to symptoms of weight gain and dyspnea are central tenets of patient education in heart failure (HF). However, it is not known whether diary use improves patient outcomes. The aims of this study were to compare mortality among rural patients with HF who completed versus did not complete a daily diary of weight and symptom self-assessment and to identify predictors of diary use.

METHODS AND RESULTS

This is a secondary analysis of a 3-arm randomized controlled trial on HF education of self-care with 2 intervention groups versus control who were given diaries for 24 months to track daily weight, HF symptoms, and response to symptom changes. Mean age was 66±13, 58% were men, and 67% completed diaries (n=393). We formed 5 groups (no use, low, medium, high, and very high) based on the first 3 months of diary use and then analyzed time to event (cardiac mortality, all-cause mortality, and HF-related readmission) starting at 3 months. Compared with patients with no diary use, high and very high diary users were less likely to experience all-cause mortality (P=0.02 and P=0.01, respectively). Self-reported sedentary lifestyle was associated with less diary use in an adjusted model (odds ratio, 0.66; 95% confidence interval, 0.46-0.95; P=0.03). Depression and sex were not significant predictors of diary use in the adjusted model.

CONCLUSIONS

In this study of 393 rural patients with HF, we found that greater diary use was associated with longer survival. These findings suggest that greater engagement in self-care behaviors is associated with better HF outcomes.

CLINICAL TRIAL REGISTRATION

URL: https://www.clinicaltrials.gov. Unique Identifier: NCT00415545.

Vitamin D supplements reduce depressive symptoms and cardiac events in heart failure patients with moderate to severe depressive symptoms

Background:

Depressive symptoms and vitamin D deficiency predict cardiac events in heart failure patients, but whether vitamin D supplements are associated with depressive symptoms and cardiac events in heart failure patients remains unknown.

Purpose:

The purpose of this study was to compare the association of vitamin D supplement use with depressive symptoms and cardiac events in heart failure patients with mild or moderate to severe depressive symptoms.

Methods:

A total of 177 heart failure patients with depressive symptoms (Patient Health Questionnaire-9 score ≥5) completed a three-day food diary to determine dietary vitamin D deficiency. Patients were split into four groups by dietary vitamin D adequacy versus deficiency and vitamin D supplement use versus non-use. The Patient Health Questionnaire-9 was used to reassess depressive symptoms at six months. Data on cardiac events for up to one year and vitamin D supplement use were obtained from patient interview and medical record review. Hierarchical linear and Cox regressions were used for data analysis.

Results:

Sixty-six patients (37.3%) had dietary vitamin D deficiency and 80 (45.2%) used vitamin D supplements. In patients with moderate to severe depressive symptoms, the group with dietary vitamin D deficiency and no supplements had the highest Patient Health Questionnaire-9 score at six months (β=0.542, p<0.001) and shortest cardiac event-free survival ( p<0.001) among the four groups, the group with dietary vitamin D deficiency and no supplements didn’t have the highest Patient Health Questionnaire-9 score at six months and shortest cardiac event-free survival in patients with mild depressive symptoms.

Conclusions:

Vitamin D supplements predicted lower depressive symptoms and reduced cardiac events for patients with moderate to severe depressive symptoms. Vitamin D deficiency was associated with higher risk of shorter cardiac event-free survival in heart failure patients regardless of vitamin D supplementation.

Anxiety and self-care behaviour in patients with chronic systolic heart failure: A multivariate model

BACKGROUND

While comprehensive evidence exists regarding negative effects of depression on self-care behaviours in patients with chronic heart failure (CHF), the relation between anxiety and self-care behaviours in patients with CHF is not clear. The aim of this study was to analyse the interactions between anxiety, depression and self-care behaviours in patients with CHF.

METHODS

The self-care behaviour of CHF outpatients was measured using the European Heart Failure Self-care Behaviour Scale (EHFScBS). The Patient Health Questionnaire (PHQ) was used to assess anxiety, the PHQ-9 was used to measure depression severity. Differences between patients with and without anxiety were assessed with the respective tests. Associations between anxiety, self-care and other predictors were analysed using linear regressions.

RESULTS

Of the 308 participating patients, 35 (11.4%) fulfilled the PHQ criteria for an anxiety disorder. These patients took antidepressants more frequently (11.8% versus 2.3%, p = .02), had had more contacts with their general practitioner within the last year (11.8 ± 16.1 versus 6.7 ± 8.6, p = .02), and had a higher PHQ-9 depression score (12.9 ± 5.7 versus 6.5 ± 4.7, p < .01) than patients without anxiety disorder. Anxiety and self-care were negatively associated (ß = -0.144, r² = 0.021, p = 0.015). The explanation of variance was augmented in a multivariate regression with the predictors age, sex, education, living with a partner, and New York Heart Association (NYHA) class ( r² = 0.098) when anxiety was added ( r² = 0.112). Depression further increased the explanation of variance (ß = -0.161, r² = 0.131, p = 0.019).

CONCLUSIONS

Anxiety is negatively associated with self-care behaviour in patients with CHF. However, this effect disappears behind the stronger influence of depression on self-care. The consideration of mental comorbidities in patients with CHF is important.

Managing expectations: cognitive authority and experienced control in complex healthcare processes

Background

Balancing the normative expectations of others (accountabilities) against the personal and distributed resources available to meet them (capacity) is a ubiquitous feature of social relations in many settings. This is an important problem in the management of long–term conditions, because of widespread problems of non-adherence to treatment regimens. Using long-term conditions as an example, we set out middle range theory of this balancing work.

Methods

A middle-range theory was constructed four stages. First, a qualitative elicitation study of men with heart failure was used to develop general propositions about patient and care giver experience, and about the ways that the organisation and delivery of care affected this. Second, these propositions were developed and confirmed through a systematic review of qualitative research literature. Third, theoretical propositions and constructs were built, refined and presented as a logic model associated with two main theoretical propositions. Finally, a construct validation exercise was undertaken, in which construct definitions informed reanalysis of a set of systematic reviews of studies of patient and caregiver experiences of heart failure that had been included in an earlier meta-review.

Results

Cognitive Authority Theory identifies, characterises and explains negotiation processes in in which people manage their relations with the expectations of normative systems – like those encountered in the management of long-term conditions. Here, their cognitive authority is the product of an assessment of competence, trustworthiness and credibility made about a person by other participants in a healthcare process; and their experienced control is a function of the degree to which they successfully manage the external process-specific limiting factors that make it difficult to otherwise perform in their role.

Conclusion

Cognitive Authority Theory assists in explaining how participants in complex social processes manage important relational aspects of inequalities in power and expertise. It can play an important part in understanding the dynamics of participation in healthcare processes. It suggests ways in which these burdens may lead to relationally induced non-adherence to treatment regimens and self-care programmes, and points to targets where intervention may reduce these adverse outcomes.

Self-care and health-related quality of life in chronic heart failure: A longitudinal analysis

BACKGROUND

Self-care is assumed to benefit health outcomes in patients with chronic heart failure (HF), but the evidence is conflicting for health-related quality of life (HRQOL). The aim of this study was to examine the association of (changes in) self-care with HRQOL while adjusting for psychological distress.

METHODS

In total, 459 patients (mean age = 66.1 ± 10.5 years, 73% male) with chronic HF completed questionnaires at baseline and at 6, 12 and 18 months of follow-up. Self-care and HF-specific HRQOL were quantified with the European Heart Failure Self-care Behaviour scale and the Minnesota Living with Heart Failure Questionnaire.

RESULTS

Using general linear models, multivariable between-subject (estimate = -0.14, p = 0.005) and no within-subject effects of self-care were found for better HRQOL over time. Associations between self-care and HRQOL were fully explained by depression (estimate = 1.77, p < 0.001). Anxiety (estimate = 4.49, p < 0.001) and Type D personality (estimate = 13.3, p < 0.001) were associated with poor HRQOL, but only partially accounted for the relationship between self-care and emotional HRQOL.

CONCLUSIONS

Self-care was prospectively associated with better disease-specific HRQOL in patients with HF, which was fully accounted for by depression, and partially accounted for by anxiety and Type D personality. Changes in self-care within a person did not affect HRQOL. Psychological distress should be considered in future efforts to address self-care and HRQOL.

Factors related to self-care behaviours in heart failure: A systematic review of European Heart Failure Self-Care Behaviour Scale studies

BACKGROUND

Self-care is an important element in the comprehensive management of patients with heart failure. The European Heart Failure Self-Care Behaviour Scale (EHFScBS) was developed and tested to measure behaviours performed by the heart failure patients to maintain life, healthy functioning, and wellbeing.

AIMS

The purpose of this review was to evaluate the importance of factors associated with heart failure self-care behaviours as measured by the EHFScBS.

METHODS

Preferred Reporting Items for Systematic Review and Meta-Analysis guidelines were used to search major health databases (PubMed, Scopus and ScienceDirect). Obtained associating factors of heart failure self-care were qualitatively synthesised and the association levels of most commonly addressed factors were further explored.

RESULTS

We identified 30 studies that were included in the review; a diverse range of personal and environmental factors associated with self-care behaviours in heart failure patients were identified. Age, health-related quality of life, gender, education, New York Heart Association class, depressive symptoms and left ventricular ejection fraction were most often correlated with the EHFScBS score. Consistent evidence for the relationship between self-care behaviours and depression was found, while their association with New York Heart Association class and health-related quality of life was non-significant in most of the studies. Associations with other factors were shown to be inconsistent or need to be further investigated as they were only addressed in single studies.

CONCLUSION

A sufficient body of evidence is available only for a few factors related to heart failure self-care measured by the EHFScBS and indicates their limited impact on patient heart failure self-care. The study highlights the need for further exploration of relationships that would offer a more comprehensive understanding of associating factors.

Depression in heart failure: Intricate relationship, pathophysiology and most updated evidence of interventions from recent clinical studies

Heart failure (HF) is a burgeoning chronic health condition affecting more than 20million people worldwide. Patients with HF have a significant (17.1%) 30-day readmission rate, which invites substantial penalty in payment to hospitals from Centers for Medicare and Medicaid Services, as per the newly introduced Hospital Readmissions Reduction Program. Depression is one of the important risk factors for readmission in HF patients. It has a significant prevalence in patients with HF and contributes to the overall poor quality of life in them. Several behavioral (smoking, obesity, lack of exercise and medication noncompliance) and pathophysiological factors (hypercortisolism, elevated inflammatory biomarkers, fibrinogen, and atherosclerosis) have been found responsible for the adverse outcome in patients with HF and concomitant depression. Hippocampal volume loss noted in patients with acute HF exacerbations may contribute to the development of depressive symptoms in them. Screening for depression in HF patients continues to be challenging due to a considerable overlap in symptoms. Published trials on the use of antidepressants and cognitive behavioral therapy (CBT) have shown variable outcomes. Newer modalities like internet-based CBT have been tried in small studies, with promising results. A recent meta-analysis observed the beneficial role of aerobic exercise training in patients with HFrEF. Future long-term prospective studies may contribute to the formulation of a detailed screening and management guideline for patients with HF and depression. Our review is aimed to summarize the intricate relationship between depression and heart failure, with respect to their epidemiology, pathophysiological aspects, and optimal management approach.

Interrelation and independence of positive and negative psychological constructs in predicting general treatment adherence in coronary artery patients - Results from the THORESCI study

BACKGROUND

In cardiac patients, positive psychological factors have been associated with improved medical and psychological outcomes. The current study examined the interrelation between and independence of multiple positive and negative psychological constructs. Furthermore, the potential added predictive value of positive psychological functioning regarding the prediction of patients' treatment adherence and participation in cardiac rehabilitation (CR) was investigated.

METHOD

409 percutaneous coronary intervention (PCI) patients were included (mean age = 65.6 ± 9.5; 78% male). Self-report questionnaires were administered one month post-PCI. Positive psychological constructs included positive affect (GMS) and optimism (LOT-R); negative constructs were depression (PHQ-9, BDI), anxiety (GAD-7) and negative affect (GMS). Six months post-PCI self-reported general adherence (MOS) and CR participation were determined.

RESULTS

Factor Analysis (Oblimin rotation) revealed two components (r = − 0.56), reflecting positive and negative psychological constructs. Linear regression analyses showed that in unadjusted analyses both optimism and positive affect were associated with better general treatment adherence at six months (p < 0.05). In adjusted analyses, optimism's predictive values remained, independent of sex, age, PCI indication, depression and anxiety. Univariate logistic regression analysis showed that in patients with a cardiac history, positive affect was significantly associated with CR participation. After controlling for multiple covariates, this relation was no longer significant.

CONCLUSIONS

Positive and negative constructs should be considered as two distinct dimensions. Positive psychological constructs (i.e. optimism) may be of incremental value to negative psychological constructs in predicting patients' treatment adherence. A more complete view of a patients' psychological functioning will open new avenues for treatment. Additional research is needed to investigate the relationship between positive psychological factors and other cardiac outcomes, such as cardiac events and mortality.

Self-Care and All-Cause Mortality in Patients With Chronic Heart Failure

OBJECTIVES

This study examined the association of self-care with all-cause mortality in a cohort of patients with chronic heart failure (HF).

BACKGROUND

Although self-care is crucial to maintain health in patients with chronic HF, studies examining an association with clinical outcomes are scarce.

METHODS

Consecutive patients with chronic HF (n = 559, mean age 66.3 ± 9.5 years, 78% men) completed the 9-item European Heart Failure Self-care Behaviour scale. Our endpoint was all-cause mortality. Associations between self-care and all-cause mortality were assessed with Kaplan-Meier analyses and multivariable Cox regression accounting for standard sociodemographic and clinical covariates, psychological distress, and self-rated health.

RESULTS

After a median follow-up of 5.5 ± 2.4 years (range 16 weeks to 9.9 years), 221 deaths (40%) from any cause were recorded. There was no evidence of a mortality benefit in patients high over those low in global self-care (p = 0.71). In post hoc analyses, low self-reported sodium intake was associated with increased mortality (adjusted hazard ratio: 1.47; 95% confidence interval: 1.10 to 1.96; p = 0.01). Other significant predictors of mortality were: male sex, lack of a partner, New York Heart Association functional class III to IV, and increasing comorbid conditions.

CONCLUSIONS

Global self-care was not associated with long-term mortality whereas low self-reported sodium intake independently predicted increased all-cause mortality beyond parameters of disease severity. Replication of findings is needed as well as studies examining the correspondence of subjectively and objectively measured sodium intake and its effects on long-term prognosis in patients with chronic HF.