The association between cardiac rehabilitation and mortality risk for myocardial infarction patients with and without depressive symptoms - PubMed (original) (raw)

Randomized Controlled Trial

doi: 10.1016/j.jad.2015.08.057. Epub 2015 Sep 2.

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Randomized Controlled Trial

The association between cardiac rehabilitation and mortality risk for myocardial infarction patients with and without depressive symptoms

Maaike Meurs et al. J Affect Disord. 2015.

Abstract

Background: Post-myocardial infarction (MI) depression is associated with reduced adherence to cardiac rehabilitation (CR) and increased mortality risk. The present study investigated whether all-cause mortality reduction associated with CR is different for MI-patients with and without depressive symptoms.

Methods: Data of 2198 post-MI patients from the Depression after Myocardial Infarction (DepreMI) study and Myocardial Infarction and Depression Intervention Trial (MIND-IT) was used. Depression was assessed at hospitalization, defined as a score≥10 on the Beck Depression Inventory (BDI). Participation in CR was assessed with a self-report questionnaire, 12 months post-MI. Cox regression was used to estimate hazard ratios (HR) for all-cause mortality, up till 10 years post-MI. Missing data was imputed, using multiple imputation.

Results: 878 (52%) Patients attended CR, 517 (26%) patients had a BDI score ≥10, and 379 (18%) patients died during the follow-up period. Overall, CR was not associated with a lower mortality risk (HR: 0.83; 0.54-1.30; p=0.41), adjusted for age, sex, left ventricle ejection fraction, previous MI, and past or current heart failure. However, there was a significant interaction between depression and CR on mortality (HR: 0.49; 0.27-0.90; p=0.02). CR was significantly associated with reduced mortality in depressed patients (HR: 0.48; 0.28-0.84; p=0.01), but not in non-depressed patients (HR: 1.09; 0.63-1.89; p=0.74).

Limitations: Patients were not randomized to CR. We had no information about the specific reasons of clinicians to offer CR and about the patients' motives to participate.

Conclusions: CR was associated with reduced mortality risk only for MI-patients with depression. Clinicians should therefore particularly encourage MI-patients with depression to participate in CR.

Keywords: Cardiac rehabilitation; Depression; Mortality; Myocardial infarction (MI); Prognosis.

Copyright © 2015 Elsevier B.V. All rights reserved.

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