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Multicenter Study
. 2014 Oct 30;3(6):e000898.
doi: 10.1161/JAHA.114.000898.

Confluence of depression and acute psychological stress among patients with stable coronary heart disease: effects on myocardial perfusion

Matthew M Burg  1 , Judith Meadows  2 , Daichi Shimbo  3 , Karina W Davidson  3 , Joseph E Schwartz  3 , Robert Soufer  2
Affiliations
Multicenter Study

Confluence of depression and acute psychological stress among patients with stable coronary heart disease: effects on myocardial perfusion

Matthew M Burg et al. J Am Heart Assoc. .

Abstract

Background: Depression is prevalent in coronary heart disease (CHD) patients and increases risk for acute coronary syndrome (ACS) recurrence and mortality despite optimal medical care. The pathways underlying this risk remain elusive. Psychological stress (PS) can provoke impairment in myocardial perfusion and trigger ACS. A confluence of acute PS with depression might reveal coronary vascular mechanisms of risk. We tested whether depression increased risk for impaired myocardial perfusion during acute PS among patients with stable CHD.

Methods and results: Patients (N=146) completed the Beck Depression Inventory-I (BDI-I), a measure of depression linked to recurrent ACS and post-ACS mortality, and underwent single-photon emission computed tomography myocardial perfusion imaging at rest and during acute PS. The likelihood of new/worsening impairment in myocardial perfusion from baseline to PS as a function of depression severity was tested. On the BDI-I, 41 patients scored in the normal range, 48 in the high normal range, and 57 in the depressed range previously linked to CHD prognosis. A BDI-I score in the depressed range was associated with a significantly greater likelihood of new/worsening impairment in myocardial perfusion from baseline to PS (odds ratio =2.89, 95% CI: 1.26 to 6.63, P=0.012). This remained significant in models controlling ACS recurrence/mortality risk factors and medications. There was no effect for selective serotonin reuptake inhibitor medications.

Conclusions: Depressed patients with CHD are particularly susceptible to impairment in myocardial perfusion during PS. The confluence of PS with depression may contribute to a better understanding of the depression-associated risk for ACS recurrence and mortality.

Keywords: depression; myocardial perfusion; stress.

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Figures

Figure 1.
Figure 1.
Distribution of Beck Depression Inventory‐I (BDI‐I) scores.
Figure 2.
Figure 2.
LOESS curve of the bivariate relationship between Beck Depression Inventory (BDI) score and the probability of new/worsening myocardial perfusion defect from baseline to psychological stress (PS). Dark black line shows the relationship between BDI score and the predicted probability of new/worsening impairment in myocardial perfusion from baseline to PS. The blue bands around this line outline the 95% CI. In this relatively small sample, the LOESS curve does not fit the data significantly better than a straight line (P=0.22). MPI indicates myocardial perfusion imaging. LOESS indicates locally weighted scatterplot smoothing curve.
See this image and copyright information in PMC

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