Marij Zuidersma

Depression screening and patient outcomes in cardiovascular care: a systematic review

CONTEXT Several practice guidelines recommend that depression be evaluated and treated in patients with cardiovascular disease, but the potential benefits of this are unclear. OBJECTIVE To evaluate the potential benefits of depression screening in patients with cardiovascular disease by assessing (1) the accuracy of depression screening instruments; (2) the effect of depression treatment on depression and cardiac outcomes; and (3) the effect of screening on depression and cardiac outcomes in patients in cardiovascular care settings. DATA SOURCES MEDLINE, PsycINFO, CINAHL, EMBASE, ISI, SCOPUS, and Cochrane databases from inception to May 1, 2008; manual journal searches; reference list reviews; and citation tracking of included articles. STUDY SELECTION We included articles in any language about patients in cardiovascular care settings that (1) compared a screening instrument to a valid major depressive disorder criterion standard; (2) compared depression treatment with placebo or usual care in a randomized controlled trial; or (3) assessed the effect of screening on depression identification and treatment rates, depression, or cardiac outcomes. DATA EXTRACTION Methodological characteristics and outcomes were extracted by 2 investigators. RESULTS We identified 11 studies about screening accuracy, 6 depression treatment trials, but no studies that evaluated the effects of screening on depression or cardiovascular outcomes. In studies that tested depression screening instruments using a priori-defined cutoff scores, sensitivity ranged from 39% to 100% (median, 84%) and specificity ranged from 58% to 94% (median, 79%). Depression treatment with medication or cognitive behavioral therapy resulted in modest reductions in depressive symptoms (effect size, 0.20-0.38; r(2), 1%-4%). There was no evidence that depression treatment improved cardiac outcomes. Among patients with depression and history of myocardial infarction in the ENRICHD trial, there was no difference in event-free survival between participants treated with cognitive behavioral therapy supplemented by an antidepressant vs usual care (75.5% vs 74.7%, respectively). CONCLUSIONS Depression treatment with medication or cognitive behavioral therapy in patients with cardiovascular disease is associated with modest improvement in depressive symptoms but no improvement in cardiac outcomes. No clinical trials have assessed whether screening for depression improves depressive symptoms or cardiac outcomes in patients with cardiovascular disease.

Social relationships and risk of dementia: A systematic review and meta-analysis of longitudinal cohort studies

It is unclear to what extent poor social relationships are related to the development of dementia. A comprehensive systematic literature search identified 19 longitudinal cohort studies investigating the association between various social relationship factors and incident dementia in the general population. Relative risks (RRs) with 95% confidence intervals (CIs) were pooled using random-effects meta-analysis. Low social participation (RR: 1.41 (95% CI: 1.13-1.75)), less frequent social contact (RR: 1.57 (95% CI: 1.32-1.85)), and more loneliness (RR: 1.58 (95% CI: 1.19-2.09)) were statistically significant associated with incident dementia. The results of the association between social network size and dementia were inconsistent. No statistically significant association was found for low satisfaction with social network and the onset of dementia (RR: 1.25 (95% CI: 0.96-1.62). We conclude that social relationship factors that represent a lack of social interaction are associated with incident dementia. The strength of the associations between poor social interaction and incident dementia is comparable with other well-established risk factors for dementia, including low education attainment, physical inactivity, and late-life depression.

Myocardial infarction and generalised anxiety disorder: 10-year follow-up

BACKGROUND Few studies have addressed the relationship between generalised anxiety disorder and cardiovascular prognosis using a diagnostic interview. AIMS To assess the association between generalised anxiety disorder and adverse outcomes in patients with myocardial infarction. METHOD Patients with acute myocardial infarction (n = 438) were recruited between 1997 and 2000 and were followed up until 2007. Current generalised anxiety disorder and post-myocardial infarction depression were assessed with the Composite International Diagnostic Interview. The end-point consisted of all-cause mortality and cardiovascular-related readmissions. RESULTS During the follow-up period, 198 patients had an adverse event. Generalised anxiety disorder was associated with an increased rate of adverse events after adjustment for age and gender (hazard ratio: 1.94; 95% confidence interval: 1.14-3.30; P = 0.01). Additional adjustment for measures of cardiac disease severity and depression did not change the results. CONCLUSIONS Generalised anxiety disorder was associated with an almost twofold increased risk of adverse outcomes independent demographic and clinical variables and depression.

The effect of music therapy compared with general recreational activities in reducing agitation in people with dementia: a randomised controlled trial

This study aimed to compare the effects of music therapy with general recreational day activities in reducing agitation in people with dementia, residing in nursing home facilities.

Onset and Recurrence of Depression as Predictors of Cardiovascular Prognosis in Depressed Acute Coronary Syndrome Patients: A Systematic Review

Background: Depression after acute coronary syndrome (ACS) is associated with worse cardiac outcomes. This systematic review evaluated whether depressed ACS patients are at differential risk depending on the recurrence and timing of onset of depressive episodes. Methods: MEDLINE, EMBASE and PsycINFO were searched from inception to 11 April 2009. Additionally, reference lists and recent tables of contents of 34 selected journals were manually searched. Eligible studies evaluated cardiovascular outcomes for subgroups of ACS patients with depression or depressive symptoms according to recurrence or onset. Results: Six studies were included that reported outcomes for subgroups of ACS patients with first-ever versus recurrent depression. Four of these reported also outcomes for post-ACS onset versus pre-ACS onset depression, and incident versus nonincident depression. Worse outcomes (odds ratio >1.4) were reported for ACS patients with first-ever depression in 3 of 6 studies (1 study p < 0.05), for patients with post-ACS onset depression in 3 of 4 studies (1 study p < 0.05, but better outcomes in one study) and for patients with incident depression in 2 of 4 studies (no studies p < 0.05). Conclusions: Although it is still suggested that ACS patients with first and new-onset depression are at particularly increased risk of worse prognosis, the inconsistent results from the studies included in this systematic review show that there is no consistent evidence to support such statements.

Self-reported depressive symptoms, diagnosed clinical depression and cardiac morbidity and mortality after myocardial infarction

BACKGROUND Self-reported depressive symptoms and clinical depression after myocardial infarction (MI) are both associated with poor cardiac prognosis. It is important to distinguish between the two when assessing cardiac prognosis, but few studies have done so. The present article evaluates the independent prognostic impact of self-reported depressive symptoms and clinical depression on cardiac outcomes after MI. METHODS 2704 MI-patients were administered the Beck Depression Inventory (BDI) and underwent the Composite International Diagnostic Interview at 3 months post-MI. All-cause mortality, cardiac mortality and cardiovascular readmissions were evaluated up till 10 years post-MI (mean: 6 years), representing 16,783 persons-years of follow-up. Event-free survival was evaluated using Cox regression analysis. RESULTS Analyses on mortality and cardiovascular readmissions included 2493 and 2434 patients respectively. Compared to patients scoring <5 on the BDI, those scoring ≥ 19 had age- and sex-adjusted HRs (95% CI) of 3.20 (2.16-4.74, p<0.001) for all-cause mortality, 3.97 (2.06-7.65, p<0.001) for cardiac mortality, and 1.45 (1.08-1.95, p<0.05) for cardiovascular readmissions. Cardiac disease severity and cardiac risk factors explained one third to half of the relationship. The presence of clinical depression was associated with all-cause (HR: 1.72 (1.29-2.30, p<0.001)) and cardiac mortality (HR: 1.67 (1.01-2.77, p<0.05)). However, adjusting for BDI-scores decreased these HRs with 53% and 72% respectively, rendering them non-significant. Dichotomized BDI-scores remained to predict cardiac prognosis independently from the presence of clinical depression. CONCLUSIONS After MI, self-reported depressive symptoms are a more accurate predictor of cardiac morbidity and mortality than clinical depression. This association is confounded largely by cardiac disease severity.

Association of Coexisting Diabetes and Depression With Mortality After Myocardial Infarction

OBJECTIVE Diabetes and depression are both linked to an increased mortality risk after myocardial infarction (MI). Population-based studies suggest that having both diabetes and depression results in an increased mortality risk, beyond that of having diabetes or depression alone. The purpose of this study was to examine the joint association of diabetes and depression with mortality in MI patients. RESEARCH DESIGN AND METHODS Data were derived from two multicenter cohort studies in the Netherlands, comprising 2,704 patients who were hospitalized for MI. Depression, defined as a Beck Depression Inventory score ≥10, and diabetes were assessed during hospitalization. Mortality data were retrieved for 2,525 patients (93%). RESULTS During an average follow-up of 6.2 years, 439 patients died. The mortality rate was 14% (226 of 1,673) in patients without diabetes and depression, 23% (49 of 210) in patients with diabetes only, 22% (118 of 544) in patients with depression only, and 47% (46 of 98) in patients with both diabetes and depression. After adjustment for age, sex, smoking, hypertension, left ventricular ejection fraction, prior MI, and Killip class, hazard ratios for all-cause mortality were 1.38 (95% CI 1.00–1.90) for patients with diabetes only, 1.39 (1.10–1.76) for patients with depression only, and as much as 2.90 (2.07–4.07) for patients with both diabetes and depression. CONCLUSIONS We observed an increased mortality risk in post-MI patients with both diabetes and depression, beyond the association with mortality of diabetes and depression alone.

Vital exhaustion and somatic depression: the same underlying construct in patients with myocardial infarction?

Objective To test whether vital exhaustion overlaps more with somatic/affective depression than with cognitive/affective depressive symptoms and evaluate the risk of recurrent cardiovascular events associated with these constructs. Methods The Beck Depression Inventory (BDI) and the Maastricht Questionnaire (MQ) were administered to 528 patients hospitalized with myocardial infarction (MI). Principal component analyses (PCAs) were performed to assess the structure of the BDI, the MQ, and both combined. Univariate and multivariate (adjusting for age, sex, left ventricular ejection fraction, Killip Class, and history of MI) Cox proportional hazard regression analyses were used to examine the risk of recurrent cardiovascular events associated with the subscales of the MQ and of both questionnaires together. Results PCA on the MQ yielded only one dimension. Per-standard-deviation increase in total MQ score, the multivariate hazard ratio was 1.37 (confidence interval [CI] = 1.15–1.64, p < .001). PCA on the items of MQ and BDI together yielded two dimensions: a somatic/affective and a cognitive/affective dimension. All but two of the items of the MQ loaded on the somatic/affective dimension. The multivariate hazard ratio for recurrent events associated with a 1-standard deviation increase in the somatic/affective dimension was 1.39 (CI = 1.11–1.73, p = .004), which was higher than the risk associated with the cognitive/affective dimension (1.02, CI = 0.82–1.27, p = .83). Conclusions Vital exhaustion and somatic/affective depression strongly overlap and may cover the same underlying construct that increased the risk of new cardiovascular events. Abbreviations BDI = Beck Depression Inventory CI = confidence interval HADS = Hospital Anxiety and Depression Scale HR = hazard ratio LVEF = left ventricular ejection fraction MDD = major depressive disorder MI = myocardial infarction MQ = Maastricht Questionnaire PCA = principal component analysis SD = standard deviation

An increase in depressive symptoms after myocardial infarction predicts new cardiac events irrespective of depressive symptoms before myocardial infarction

BACKGROUND Depression after myocardial infarction (MI) is associated with poor cardiovascular prognosis. There is some evidence that specifically depressive episodes that develop after the acute event are associated with poor cardiovascular prognosis. The aim of the present study was to evaluate whether an increase in the number of depressive symptoms after MI is associated with new cardiac events. METHOD In 442 depressed and 325 non-depressed MI patients the Composite International Diagnostic Interview interview to assess post-MI depression was extended to evaluate the presence of the ICD-10 depressive symptoms just before and after the MI. The effect of an increase in number of depressive symptoms during the year following MI on new cardiac events up to 2.5 years post-MI was assessed with Cox regression analyses. RESULTS Each additional increase of one symptom was significantly associated with a 15% increased risk of new cardiac events, and this was stronger for non-depressed than for depressed patients. This association was independent of baseline cardiac disease severity. There was no interaction with the number of depressive symptoms pre-MI. CONCLUSIONS Our findings suggest that an increase in depressive symptoms after MI irrespective of the state of depression pre-MI explains why post-MI depression is associated with poor cardiovascular prognosis. Also increases in depressive symptoms after MI resulting in subthreshold depression should be evaluated as a prognostic marker. Whether potential mechanisms such as cardiac disease severity or inflammation underlie the association remains to be clarified.

Physical Frailty and Cognitive Functioning in Depressed Older Adults: Findings From the NESDO Study

OBJECTIVES Cognitive frailty has recently been defined as the co-occurrence of physical frailty and cognitive impairment. Late-life depression is associated with both physical frailty and cognitive impairment, especially processing speed and executive functioning. The objective of this study was to investigate the association between physical frailty and cognitive functioning in depressed older persons. DESIGN Baseline data of a depressed cohort, participating in the Netherlands Study of Depression in Older persons (NESDO). SETTING Primary care and specialized mental health care. PARTICIPANTS A total of 378 patients (≥60 years) with depression according to DSM-IV criteria and a MMSE score of 24 points or higher. MEASUREMENTS The physical frailty phenotype as well as its individual criteria (weight loss, weakness, exhaustion, slowness, low activity). Cognitive functioning was examined in 4 domains: verbal memory, working memory, interference control, and processing speed. RESULTS Of the 378 depressed patients (range 60-90 years; 66.1% women), 61 were classified as robust (no frailty criteria present), 214 as prefrail (1 or 2 frailty criteria present), and 103 as frail (≥3 criteria). Linear regression analyses, adjusted for confounders, showed that the severity of physical frailty was associated with poorer verbal memory (ß = -0.13, P = .039), slower processing speed (ß = -0.20, P = .001), and decreased working memory (ß = -0.18, P = .004), but not with changes in interference control (ß = 0.04, P = .54). CONCLUSION In late-life depression, physical frailty is associated with poorer cognitive functioning, although not consistently for executive functioning. Future studies should examine whether cognitive impairment in the presence of physical frailty belongs to cognitive frailty and is indeed an important concept to identify a specific subgroup of depressed older patients, who need multimodal treatment strategies integrating physical, cognitive, and psychological functioning.