Self-efficacy mediates the associations of social support and depression with treatment adherence in heart failure patients. Int J Behav Med. 2013;20:88-96. [PMID: 22212607 DOI: 10.1007/s12529-011-9215-0]

Effect of perceived social support and dispositional optimism on the depression of burn patients

Burn wounds have a significant impact on the mental health of patients. This study aimed to investigate the impact of perceived social support and dispositional optimism on depression of burn patients. A total of 246 burn patients accomplished the Multidimensional Scale of Perceived Social Support, the Revised Life Orientation Test, and Depression Scale. The results revealed that both perceived social support and optimism were significantly correlated with depression. Structural equation modeling indicated that optimism partially mediated the relationship between perceived social support and depression. Implications for prevention of depression in burn patients were discussed.

Social support mediates loneliness and depression in elderly people

This study investigated the effect of loneliness on depression and further tested the mediating effect of social support. A total of 320 elderly persons completed the Emotional and Social Loneliness Scale, Multidimensional Scale of Perceived Social Support, and Self-Rating Depression Scale. Results revealed that loneliness and social support significantly correlated with depression. Structural Equation Modeling indicated that social support partially mediates loneliness and depression. The final model illustrated a significant path from loneliness to depression through social support. This study sheds light on the concurrent effects of loneliness and social support on depression, providing evidence on how to reduce depression among the elderly.

Depressive symptomatology, exercise adherence, and fitness are associated with reduced cognitive performance in heart failure

OBJECTIVE

Depression is common in heart failure (HF) and associated with reduced cognitive function. The current study used structrual equation modeling to examine whether depression adversely impacts cognitive function in HF through its adverse affects on exercise adherence and cardiovascular fitness.

METHOD

158 HF patients completed neuropsychological testing, physical fitness test, Beck depression inventory-II (BDI-II), and measures assessing exercise adherence and physical exertion.

RESULTS

The model demonstrated excellent model fit and increased scores on the BDI-II negatively affected exercise adherence and cardiovascular fitness. There was a strong inverse association between cardiovascular fitness and cognitive function. Sobel test showed a significant indirect pathway between the BDI-II and cognitive function through cardiovascular fitness.

DISCUSSION

This study suggests depression in HF may adversely impact cognitive function through reduced cardiovascular fitness. Prospective studies are needed to determine whether treatment of depression can lead to better lifestyle behaviors and ultimately improve neurocognitive outcomes in HF.

Health locus of control and the sense of self-efficacy in patients with systolic heart failure: a pilot study

BACKGROUND

Treatment of heart failure (HF) requires the lifelong adherence to medical self-care regimes. The objective of this study was to examine health-control beliefs and the sense of self-efficacy (psychological features particularly important for efficient compliance among patients suffering from chronic diseases) in patients with systolic HF in relation to clinical status and depressive symptoms.

SUBJECTS AND METHODS

Sixty-six consecutive patients with chronic systolic HF, hospitalized in the Centre for Heart Diseases, Military Hospital (94% men, age: 61 ± 11 years, ischemic etiology: 63%, left ventricular ejection fraction: 32% ± 12%), filled in (during their hospital stay): (1) the Multidimensional Health Locus of Control Scale measuring three possible localizations of health control: "internality" (ie, the belief that health status depends only on personal decisions and behaviors); "powerful others externality" ([PHLC subscale] ie, the conviction that health depends on "powerful people" such as doctors, family members, close friends), and "chance externality" (ie, belief that health status is determined by chance, fate, or luck), and (2) the Generalized Self-Efficacy Scale. The results obtained by HF patients were compared to those reported by patients with other chronic diseases and healthy subjects.

RESULTS

In patients with HF, internality was similar to values obtained by patients with diabetes, men after myocardial infarction, and women after mastectomy; and was lower than in healthy subjects. Powerful others externality was more pronounced in patients with HF as compared to other groups of patients and healthy people. Only women after mastectomy had higher scores of PHLC. In patients with HF, chance externality was similar to values reported in patients with renal failure, men after myocardial infarction, and women after mastectomy; and was less pronounced than in healthy subjects. The majority (77%) of patients with HF were characterized by a high sense of self-efficacy (>the 7th sten score), having the highest sense of self-efficacy among patients with other chronic diseases and healthy controls. Higher internality was accompanied by higher sense of self-efficacy (P < 0.05) in patients with HF. Subjects with high plasma N-terminal pro-B type natriuretic peptide (reflecting the disease severity) had the least pronounced internality (P < 0.05), whereas those with more advance depressive symptoms had the lower sense of self-efficacy (P = < 0.05).

CONCLUSION

Patients with systolic HF demonstrate a conviction that other people, including physicians, have a large influence on their health status, and at the same time are aware of the efficacy of their own activities in coping with the disease. Such a configuration of psychological features seems to be beneficial in the context of the developing modern strategies, which due to the improved cooperation between the physicians and the patients could enhance the compliance in patients with HF.